WorldWideScience

Sample records for augmenting foxo3a-dependent antioxidant

  1. Piper betle extracts exhibit antitumor activity by augmenting antioxidant potential

    OpenAIRE

    ALAM, BADRUL; MAJUMDER, RAJIB; AKTER, SHAHINA; LEE, SANG-HAN

    2014-01-01

    The present study was conducted to evaluate the methanolic extract of Piper betle leaves (MPBL) and its organic fractions with regard to antitumor activity against Ehrlich ascites carcinoma (EAC) in Swiss albino mice and to confirm their antioxidant activities. At 24 h post-intraperitoneal inoculation of tumor cells into mice, extracts were administered at 25, 50 and 100 mg/kg body weight for nine consecutive days. The antitumor effects of the extracts were then assessed according to tumor vo...

  2. Dimethyl fumarate inhibits osteoclasts via attenuation of reactive oxygen species signalling by augmented antioxidation.

    Science.gov (United States)

    Yamaguchi, Yuuki; Kanzaki, Hiroyuki; Katsumata, Yuta; Itohiya, Kanako; Fukaya, Sari; Miyamoto, Yutaka; Narimiya, Tsuyoshi; Wada, Satoshi; Nakamura, Yoshiki

    2018-02-01

    Bone destructive diseases are common worldwide and are caused by dysregulation of osteoclast formation and activation. During osteoclastogenesis, reactive oxygen species (ROS) play a role in the intracellular signalling triggered by receptor activator of nuclear factor-κB ligand (RANKL) stimulation. Previously, we demonstrated that induction of antioxidant enzymes by Nrf2 activation using Nrf2-gene transfer, an ETGE-peptide or polyphenols, successfully ameliorated RANKL-dependent osteoclastogenesis. Dimethyl fumarate (DMF) has been shown to activate Nrf2 signalling and has been lately used in clinical trials for neurodegenerative diseases. In this study, we hypothesized that Nrf2 activation by DMF would inhibit osteoclastogenesis and bone destruction via attenuation of intracellular ROS signalling through antioxidant mechanisms. RAW 264.7 cells were used as osteoclast progenitor cells. We found that DMF induced Nrf2 translocation to the nucleus, augmented Nrf2 promoter-luciferase reporter activity and increased antioxidant enzyme expression. Using flow cytometry, we found that DMF attenuated RANKL-mediated intracellular ROS generation, which resulted in the inhibition of RANKL-mediated osteoclastogenesis. Local DMF injection into the calvaria of male BALB/c mice resulted in attenuated bone destruction in lipopolysaccharide-treated mice. In conclusion, we demonstrated in a preclinical setting that DMF inhibited RANKL-mediated osteoclastogenesis and bone destruction via induction of Nrf2-mediated transcription of antioxidant genes and consequent decrease in intracellular ROS levels. Our results suggest that DMF may be a promising inhibitor of bone destruction in diseases like periodontitis, rheumatoid arthritis and osteoporosis. © 2017 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.

  3. Pretreatment with Antioxidants Augments the Acute Arterial Vasoconstriction Caused by Diesel Exhaust Inhalation.

    Science.gov (United States)

    Sack, Cora S; Jansen, Karen L; Cosselman, Kristen E; Trenga, Carol A; Stapleton, Pat L; Allen, Jason; Peretz, Alon; Olives, Casey; Kaufman, Joel D

    2016-05-01

    Diesel exhaust inhalation, which is the model traffic-related air pollutant exposure, is associated with vascular dysfunction. To determine whether healthy subjects exposed to diesel exhaust exhibit acute vasoconstriction and whether this effect could be modified by the use of antioxidants or by common variants in the angiotensin II type 1 receptor (AGTR1) and other candidate genes. In a genotype-stratified, double-blind, four-way crossover study, 21 healthy adult subjects were exposed at rest in a randomized, balanced order to diesel exhaust (200 μg/m(3) particulate matter with an aerodynamic diameter ≤ 2.5 μm [PM2.5]) and filtered air, and to pretreatment with antioxidants (N-acetylcysteine and ascorbate) and placebo. Before and after each exposure, brachial artery diameter (BAd) was assessed using ultrasound. Changes in BAd were compared across pretreatment and exposure sessions. Gene-exposure interactions were evaluated in the AGTR1 A1166C polymorphism, on which recruitment was stratified, and other candidate genes, including TRPV1 and GSTM1. Compared with filtered air, exposure to diesel exhaust resulted in a significant reduction in BAd (mean, -0.09 mm, 95% confidence interval [CI], -0.01 to -0.17; P = 0.03). Pretreatment with antioxidants augmented diesel exhaust-related vasoconstriction with a mean change in BAd of -0.18 mm (95% CI, -0.28 to -0.07 mm; P = 0.001). Diesel exhaust-related vasoconstriction was primarily observed in the variant alleles of AGTR1 and TRPV1. No association was found between diesel exhaust inhalation and flow-mediated dilation. We confirmed that short-term exposure to diesel exhaust in healthy subjects is associated with acute vasoconstriction in a conductance artery and found suggestive evidence of involvement of nociception and renin-angiotensin systems in this effect. Pretreatment with an antioxidant regimen increased vasoconstriction.

  4. L-arginine augments the antioxidant effect of garlic against acetic acid-induced ulcerative colitis in rats.

    Science.gov (United States)

    Harisa, Gamal Eldin I; Abo-Salem, Osama M; El-Sayed, El-Sayed M; Taha, Ehab I; El-Halawany, Nermin

    2009-10-01

    Garlic contains many sulfhydryl compounds that act as antioxidants. However, the role of nitric oxide (NO) in inflammation is controversial. The aim of the present study is to investigate the possible protective effect of garlic against acetic acid-induced ulcerative colitis in rats, as well as the probable modulatory effect of L-arginine (NO precursor) on garlic activity. Intra-rectal inoculation of rats with 4% acetic acid for 3 consecutive days caused a significant increase in the colon weight and marked decrease in the colon length. In addition, acetic acid induced a significant increase in serum levels of nitrate as well as colonic tissue content of malondialdehyde (MDA). Moreover, colonic tissue contents of glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) were markedly reduced. On the other hand, pre-treatment of rats with garlic (0.25 g/kgbwt, orally) for 4 consecutive weeks and 3 days during induction of colitis significantly reduced the increase in the colon weight induced by acetic acid and ameliorated alterations in oxidant and antioxidant parameters. Interestingly, oral co-administration of garlic (0.25 g/kgbwt) and L-arginine (625 mg/kgbwt) for the same period of garlic administration mitigated the changes in both colon weight and length induced by acetic acid and increased garlic effect on colon tissue contents of MDA and GSH. In conclusion, L-arginine can augment the protective effect of garlic against ulcerative colitis; an effect that might be mainly attributed to its NO donating property resulting in enhancement of garlic antioxidant effect. Further studies will be needed to determine which one of the active ingredients of garlic has the main antioxidant effect to be used with L-arginine.

  5. Probiotic-mediated blueberry (Vaccinium corymbosum L.) fruit fermentation to yield functionalized products for augmented antibacterial and antioxidant activity.

    Science.gov (United States)

    Oh, Byung-Taek; Jeong, Seong-Yeop; Velmurugan, Palanivel; Park, Jung-Hee; Jeong, Do-Youn

    2017-11-01

    The aim of this study was to investigate the fermentation of blueberry fruit with selected probiotic bacteria (Bacillus amyloliquefaciens and Lactobacillus brevis) and yeast (Starmerella bombicola) isolated from fermented starfish for the extraction of functionalized products for biomedical applications. All probiotic-based fermented extracts showed augmented antibacterial and antioxidant activity compared to the control. Biochemical parameters of viable cell count, titratable acidity, total phenol, total anthocyanin, total flavonoids, total sugar, and reducing sugar were analyzed during a 0-96 h fermentation period. In addition, Fourier transform infrared (FTIR) spectroscopy was performed to determine the functional groups in the control and fermented extracts and it signifies the presence of alcohol groups, phenol groups, carboxylic acids, and aliphatic amines, respectively. The well diffusion, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) assays determined that the S. bombicola-mediated fermented extract has excellent activity, followed by B. amyloliquefaciens and L. brevis, at a high concentration of 1.0 g/mL fermented extract. The ABTS and DPPH showed significant scavenging activity with IC50 values of (30.52 ± 0.08)/(155.10 ± 0.06) μg/mL, (24.82 ± 0.16)/(74.21 ± 1.26) μg/mL, and (21.81 ± 0.08)/(125.11 ± 0.04) μg/mL for B. amyloliquefaciens, L. brevis, and S. bombicola, respectively. Developing a value-added fermented blueberry product will help circumvent losses because of the highly perishable nature of the fruit. Copyright © 2017 The Society for Biotechnology, Japan. Published by Elsevier B.V. All rights reserved.

  6. Antioxidants

    Science.gov (United States)

    Antioxidants are man-made or natural substances that may prevent or delay some types of cell damage. Antioxidants are found in many foods, including fruits and ... are also available as dietary supplements. Examples of antioxidants include Beta-carotene Lutein Lycopene Selenium Vitamin A ...

  7. Cysteine-stabilised peptide extract of Morinda lucida (Benth) leaf exhibits antimalarial activity and augments antioxidant defense system in P. berghei-infected mice.

    Science.gov (United States)

    Adebayo, Joseph O; Adewole, Kayode E; Krettli, Antoniana U

    2017-07-31

    Cysteine-stabilised peptides (CSP) are majorly explored for their bioactivities with applications in medicine and agriculture. Morinda lucida leaf is used indigenously for the treatment of malaria; it also contains CSP but the role of CSP in the antimalarial activity of the leaf has not been evaluated. This study was therefore performed to evaluate the antimalarial activity of partially purified cysteine-stabilised peptide extract (PPCPE) of Morinda lucida leaf and its possible augmentation of the antioxidant systems of liver and erythrocytes in murine malaria. PPCPE was prepared from Morinda lucida leaf. The activity of PPCPE was evaluated in vitro against Plasmodium falciparum W2 and its cytotoxicity against a BGM kidney cell line. PPCPE was also evaluated for its antimalarial activity and its effects on selected liver and erythrocyte antioxidant parameters in P. berghei NK65-infected mice. PPCPE was not active against P. falciparum W2 (IC50: >50µg/ml) neither was it cytotoxic (MLD50: >1000µg/ml). However, PPCPE was active against P. berghei NK65 in vivo, causing 51.52% reduction in parasitaemia at 31.25mg/Kg body weight on day 4 post-inoculation. PPCPE significantly reduced (P < 0.05) malondialdehyde concentrations in the liver and erythrocyte at higher doses compared to untreated controls. PPCPE increased glutathione concentration and activities of glutathione peroxidase, glutathione reductase, superoxide dismutase and catalase in a dose-dependent manner, which was significant (P < 0.05) at higher doses compared to the untreated controls. The results suggest that PPCPE may require bioactivation in vivo in order to exert its antimalarial effect and that PPCPE may augment the antioxidant defense system to alleviate the reactive oxygen species-mediated complications of malaria. Copyright © 2017 Elsevier Ireland Ltd. All rights reserved.

  8. Alleviation of Ischemia-Reperfusion Injury in Liver Steatosis by Augmenter of Liver Regeneration Is Attributed to Antioxidation and Preservation of Mitochondria.

    Science.gov (United States)

    Weng, Junhua; Li, Wen; Jia, Xiaowei; An, Wei

    2017-10-01

    Fatty liver is one of the major impediments to liver surgery and liver transplantation because steatotic hepatocytes are more susceptible to ischemia-reperfusion injury (IRI). In this study, the effects of augmenter of liver regeneration (ALR) on hepatic IRI in steatotic mice were investigated. In vivo, liver steatosis of mice was induced by feeding a methionine-choline-deficient diet for 2 weeks. Three days before hepatic partial warm IRI, mice were transfected with the ALR-containing adenovirus. In an in vitro study, the protective effect of ALR on steatotic HepG2 cells was analyzed after hypoxia/reoxygenation (HR) treatment. The transfection of the ALR gene into steatotic mice attenuated liver injury, inhibiting hepatic oxidative stress, increasing antioxidation capacities, promoting liver regeneration, and consequently suppressing cell apoptosis/death. Furthermore, resistance to HR injury was notably increased in ALR-transfected cells compared with the vector-transfected cells. The HR-induced rise in the mitochondrial reactive oxygen species was reduced, and cellular antioxidant activities were enhanced. The ALR transfection prevented cells from apoptosis, which can be attributed to the preservation of the mitochondrial membrane potential, enhancement of oxygen consumption rate and production of adenosine triphosphate. ALR protects steatotic hepatocytes from IRI by attenuating oxidative stress and mitochondrial dysfunction, as well as improving antioxidant effect. ALR may be used as a potential therapeutic agent when performing surgery and transplantation of steatotic liver.

  9. Augmentation of water-holding and textural properties of breast meat from oxidatively stressed broilers by dietary antioxidant regimens.

    Science.gov (United States)

    Delles, R M; Xiong, Y L; True, A D; Ao, T; Dawson, K A

    2015-01-01

    1. The impact of dietary antioxidants and degree of oil oxidation on textural attributes of chicken broiler breast meat stored in oxygen-enriched, air-permeable polyvinylchloride and skin packaging systems during retail display at 2-4°C for up to 21 d was assessed. 2. Broilers were fed on diets either with a low-oxidised oil (peroxide 23 mEq O2/kg) or with a high-oxidised oil (peroxide 121 mEq O2/kg), with or without an algae-based antioxidant and organic mineral antioxidant supplement for 42 d. 3. Fatty acids and radical scavenging activities of the diets were estimated. Meat colour, pH, myofibrillar protein profile and textural traits were measured. 4. Diets with high-oxidised oil reduced stearic, linoleic and linolenic acid content compared to low-oxidised oil samples, regardless of antioxidant supplementation. Meat colour and pH varied among dietary treatments throughout storage. Meat samples from the antioxidant dietary group, irrespective of oil oxidation level, had lower amounts of purge and cooking losses compared to the unsupplemented diets. For all packaging systems, meat shear force was significantly higher for broilers fed on high-oxidised diets. 5. The results demonstrate that dietary antioxidant supplementation can minimise the negative impact of oxidised oil on the quality of broiler meat packaged in different atmospheric environments.

  10. Bio-augmentation of antioxidants and phenolic content of Lablab purpureus by solid state fermentation with GRAS filamentous fungi

    Directory of Open Access Journals (Sweden)

    Pardeep Kumar Sadh

    2017-09-01

    Full Text Available The present study was conducted to find out the effect of solid state fermentation on release of phenolics and subsequently on improvement of antioxidant activity of fermented seed and flour of Lablab purpureus (seim, using GRAS filamentous fungi i.e. Aspergillus awamori and Aspergillus oryzae. Significant increase in TPC level was observed on 5th day of fermentation of seed and flour with A. awamori and A. oryzae as compared to non-fermented ones. In DPPH and ABTS antioxidant assay, maximum activity was noticed in fermented ethanolic extract of seim seed with A. awamori and A. oryzae on 3rd and 4th day of incubation, respectively. The findings showed higher antioxidant activity formation in fermented seim seed than flour. Significant increase in enzyme activity of α-amylase was also contributed by SSF. This study demonstrated that fermented seed and flour of seim are better source of phytochemicals compared to the non-fermented ones.

  11. Ulva lactuca polysaccharides prevent Wistar rat breast carcinogenesis through the augmentation of apoptosis, enhancement of antioxidant defense system, and suppression of inflammation

    Directory of Open Access Journals (Sweden)

    Abd-Ellatef GF

    2017-02-01

    cytokines tumor necrosis factor-α and nitric oxide were significantly ameliorated in DMBA-administered rats treated with ulvan polysaccharides as compared to DMBA-administered control. Conclusion: In conclusion, ulvan polysaccharides at the level of initiation and promotion might have potential chemopreventive effects against breast carcinogenesis. These preventive effects may be mediated through the augmentation of apoptosis, suppression of oxidative stress and inflammation, and enhancement of antioxidant defense system. Keywords: breast carcinogenesis, cancer initiation, cancer promotion, Ulva lactuca polysaccharides, DMBA, oxidative stress, apoptosis

  12. Fraxetin and ethyl acetate extract from Lawsonia inermis L. ameliorate oxidative stress in P. berghei infected mice by augmenting antioxidant defence system.

    Science.gov (United States)

    Singh, Dhananjay Kumar; Cheema, Harveer Singh; Saxena, Archana; Jyotshana; Singh, Shilpi; Darokar, Mahendra P; Bawankule, Dnyaneshwar U; Shanker, Karuna; Luqman, Suaib

    2017-12-01

    Lawsonia inermis L. is a well-documented plant for cosmetic as well as medicinal properties. It is used by local communities in India and Nigeria for the treatment of many parasitic diseases, including malaria. Earlier studies on the plant's antiplasmodial activity were not assigned to any phytochemical with no quality assurance data. In this report, a recent chemically characterized extract and it's major constituent were investigated for in vitro antiplasmodial activity on chloroquine sensitive NF-54 strain. Furtherly, the potent extract and this constituent were assessed in vivo in Plasmodium berghei infected mice. The bioactive phytochemical and enriched extract were also monitored against various oxidative stress parameters. The extract characterization was done by the quantitative analysis of eight phytochemicals using gradient reverse phase HPLC method. In vitro antiplasmodial activity was evaluated on chloroquine sensitive NF-54 strain by the determination of pfLDH activity. In vivo activity of the most potent extract and constituent were evaluated in P. berghei infected mice upon oral administration. The estimation of oxidative stress was done by monitoring various enzymatic and non-enzymatic parameters. The ethyl acetate extract of leaves (IC 50 9.00 ± 0.68 µg/ml) and fraxetin (IC 50 19.21 ± 1.04 µM) were the most effective in in vitro assays therefore selected for in vivo tests. The administration of the ethyl acetate extract of leaves and fraxetin to the infected mice resulted in significant (p ethyl acetate extract of L. inermis and fraxetin were able to suppress the oxidative damage by augmenting endogenous antioxidant system and thus ameliorated the plasmodium infection in mice. Copyright © 2017 Elsevier GmbH. All rights reserved.

  13. AUGMENTED REALITY

    DEFF Research Database (Denmark)

    Skov, Kirsten; Bahn, Anne Louise

    2017-01-01

    Projektets grundlæggende idé er udvikling af visuel, æstetisk læring med Augmented Reality, hvor intentionen er at bidrage med konkrete undersøgelser og udforskning af begrebet Augmented Reality – herunder koblingen mellem det analoge og digitale i forhold til læring, multimodalitet og it...

  14. Augmented Reality

    DEFF Research Database (Denmark)

    Kjærgaard, Hanne Wacher; Kjeldsen, Lars Peter Bech; Rahn, Annette

    2015-01-01

    This chapter describes the use of iPad-facilitated application of augmented reality in the teaching of highly complex anatomical and physiological subjects in the training of nurses at undergraduate level. The general aim of the project is to investigate the potentials of this application in terms...... of augmented reality are discussed....

  15. Socket augmentation

    OpenAIRE

    Shalu Chandna; Kimpreet Kaur; Navkiran Kaur; Anish Manocha

    2015-01-01

    Introduction of dental implants have come to the forefront of modern odontology. A successful osseointegration demands an ideal quantity and quality of alveolar bone. Socket augmentation techniques are effective in minimizing postextraction alveolar ridge resorption. The aim of this paper is to review the available literature on socket augmentation with special focus on its relation with implant.

  16. Socket augmentation

    Directory of Open Access Journals (Sweden)

    Shalu Chandna

    2015-01-01

    Full Text Available Introduction of dental implants have come to the forefront of modern odontology. A successful osseointegration demands an ideal quantity and quality of alveolar bone. Socket augmentation techniques are effective in minimizing postextraction alveolar ridge resorption. The aim of this paper is to review the available literature on socket augmentation with special focus on its relation with implant.

  17. Augmented reality

    National Research Council Canada - National Science Library

    Patrik Pucer

    2011-01-01

    .... In such a mixed reality, real and virtual objects coexist in the same environment. The reality, where users watch and use the real environment upgraded with virtual objects is called augmented reality...

  18. Breast Augmentation

    Science.gov (United States)

    ... augmentation About Doctors & Departments Care at Mayo Clinic Advertisement Mayo Clinic does not endorse companies or products. ... a Job Site Map About This Site Twitter Facebook Google YouTube Pinterest Mayo Clinic is a not- ...

  19. Defence strategies adopted by the medicinal plant Coleus forskohlii against supplemental ultraviolet-B radiation: Augmentation of secondary metabolites and antioxidants.

    Science.gov (United States)

    Takshak, Swabha; Agrawal, S B

    2015-12-01

    Supplementary ultraviolet-B (ambient+3.6  kJ m(-2) day(-1)) induced changes on morphological, physiological, and biochemical characteristics (specifically the defence strategies: UV-B protective compounds and antioxidants) of Coleus forskohlii were investigated under field conditions at 30, 60, and 90 days after transplantation. Levels of secondary metabolites increased under s-UV-B stress; flavonoids and phenolics (primary UV-B screening agents) were recorded to be higher in leaves which are directly exposed to s-UV-B. This was also verified by enhanced activities of phenylpropanoid pathway enzymes: phenylalanine ammonia lyase (PAL), cinnamyl alcohol dehydrogenase (CAD), 4-coumarate-CoA ligase (4CL), chalcone-flavanone isomerase (CHI), and dihydroflavonol reductase (DFR). Antioxidants, both enzymatic (ascorbate peroxidase, catalase, glutathione reductase, peroxidase, polyphenol oxidase, and superoxide dismutase) and non-enzymatic (ascorbic acid and α-tocopherol) also increased in the treated organs of the test plant, higher contents being recorded in roots except for ascorbic acid. On the contrary, protein and chlorophyll content (directly implicated in regulating plant growth and development) declined under s-UV-B. These alterations in plant biochemistry led the plant to compromise on its photosynthate allocation towards growth and biomass production as evidenced by a reduction in its height and biomass. The study concludes that s-UV-B is a potent stimulating factor in increasing the concentrations of defense compounds and antioxidants in C. forskohlii to optimize its performance under stress. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

  20. Augmented reality

    Directory of Open Access Journals (Sweden)

    Patrik Pucer

    2011-08-01

    Full Text Available Today we can obtain in a simple and rapid way most of the information that we need. Devices, such as personal computers and mobile phones, enable access to information in different formats (written, pictorial, audio or video whenever and wherever. Daily we use and encounter information that can be seen as virtual objects or objects that are part of the virtual world of computers. Everyone, at least once, wanted to bring these virtual objects from the virtual world of computers into real environments and thus mix virtual and real worlds. In such a mixed reality, real and virtual objects coexist in the same environment. The reality, where users watch and use the real environment upgraded with virtual objects is called augmented reality. In this article we describe the main properties of augmented reality. In addition to the basic properties that define a reality as augmented reality, we present the various building elements (possible hardware and software that provide an insight into such a reality and practical applications of augmented reality. The applications are divided into three groups depending on the information and functions that augmented reality offers, such as help, guide and simulator.

  1. Augmented Reality

    DEFF Research Database (Denmark)

    Nielsen, Birgitte Lund; Brandt, Harald; Radmer, Ole

    2017-01-01

    Artiklen præsenterer resultater fra pilotafprøvning i 7.-klasses fysik/kemi og biologi af to Augmented Reality (AR)-apps til naturfagsundervisning. Muligheder og udfordringer ved lærerens stilladsering af elevernes undersøgende samtale og modelleringskompetence er undersøgt med interview...

  2. Foxo3a-dependent Bim transcription protects mice from a high fat diet via inhibition of activation of the NLRP3 inflammasome by facilitating autophagy flux in Kupffer cells.

    Science.gov (United States)

    Liu, Yan; Zhang, Wenfeng; Wu, Xiaoling; Gong, Jianping

    2017-05-23

    The role of Foxo3a in the regulation of autophagy flux and activation of the NLRP3 inflammasome in KCs suffering from HFD conditions is unknown. Up-regulation of Foxo3a restored autophagy flux and dampened the activation of the NLRP3 inflammasome in KCs stimulated with PA and LPS. In contrast, down-regulation of Foxo3a increased blockage of autophagy flux and promoted NLRP3 inflammasome activation. Additionally, mRNA levels of Bim were significantly changed with the alteration of Foxo3a in KCs under PA and LPS stimulation among foxo3a targeted genes. Overexpression of Bim restored autophagy influx and attenuated NLRP3 inflammasome pathway activation. In addition, autophagy formation was restored, and activation of NLRP3 inflammasome was inhibited in KCs isolated from mice treated with Iturin A and fed with a HFD. Autophagy flux in KCs and activation levels of NLRP3 inflammasome were evaluated after altering the expression of Foxo3a in KCs before stimulation with PA and LPS. Additionally, various target genes of Foxo3a were measured in KCs pretreated with an agonist (Iturin A) or inhibitor (SC97) of Foxo3a after KCs stimulation with PA and LPS in order to hunt for targets of Foxo3a. Activation levels of NLRP3 inflammasome in isolated KCs, as well as autophagy flux, were measured after mice were treated with Iturin A and fed with a HFD for 16 weeks. Foxo3a restores autophagy flux and attenuates the activation of the NLRP3 inflammasome by promoting the transcription of Bim, suggesting a potential therapeutic target in NAFLD and other obesity-related diseases.

  3. Mobile Collaborative Augmented Reality: The Augmented Stroll

    OpenAIRE

    Renevier, Philippe; Nigay, Laurence

    2001-01-01

    International audience; The paper focuses on Augmented Reality systems in which interaction with the real world is augmented by the computer, the task being performed in the real world. We first define what mobile AR systems, collaborative AR systems and finally mobile and collaborative AR systems are. We then present the augmented stroll and its software design as one example of a mobile and collaborative AR system. The augmented stroll is applied to Archaeology in the MAGIC (Mobile Augmente...

  4. ARLearn: augmented reality meets augmented virtuality

    NARCIS (Netherlands)

    Ternier, Stefaan; Klemke, Roland; Kalz, Marco; Van Ulzen, Patricia; Specht, Marcus

    2012-01-01

    Ternier, S., Klemke, R., Kalz, M., Van Ulzen, P., & Specht, M. (2012). ARLearn: augmented reality meets augmented virtuality [Special issue]. Journal of Universal Computer Science - Technology for learning across physical and virtual spaces, 18(15), 2143-2164.

  5. Confronting an augmented reality

    OpenAIRE

    John Hedberg; Robert Fitzgerald; James Steele; Anna Wilson; Matt Bacon; Danny Munnerley

    2012-01-01

    How can educators make use of augmented reality technologies and practices to enhance learning and why would we want to embrace such technologies anyway? How can an augmented reality help a learner confront, interpret and ultimately comprehend reality itself ? In this article, we seek to initiate a discussion that focuses on these questions, and suggest that they be used as drivers for research into effective educational applications of augmented reality. We discuss how multi-modal, sensorial...

  6. Adaptive Augmented Reality: Plasticity of Augmentations

    OpenAIRE

    Ghouaiel, Nehla; Cieutat, Jean-Marc; JESSEL, Jean-Pierre

    2014-01-01

    International audience; An augmented reality system is used to complete the real world with virtual objects (computer generated) so they seem to coexist in the same space as the real world. The concept of plasticity [4][5] was first introduced for Human Computer Interaction (HCI). It denotes the ability of an HCI interface to fit the context of use defined by the user, the environment and the platform. We believe that plasticity is a very important notion in the domain of augmented reality. T...

  7. Confronting an Augmented Reality

    Science.gov (United States)

    Munnerley, Danny; Bacon, Matt; Wilson, Anna; Steele, James; Hedberg, John; Fitzgerald, Robert

    2012-01-01

    How can educators make use of augmented reality technologies and practices to enhance learning and why would we want to embrace such technologies anyway? How can an augmented reality help a learner confront, interpret and ultimately comprehend reality itself ? In this article, we seek to initiate a discussion that focuses on these questions, and…

  8. Augmented reality: a review.

    Science.gov (United States)

    Berryman, Donna R

    2012-01-01

    Augmented reality is a technology that overlays digital information on objects or places in the real world for the purpose of enhancing the user experience. It is not virtual reality, that is, the technology that creates a totally digital or computer created environment. Augmented reality, with its ability to combine reality and digital information, is being studied and implemented in medicine, marketing, museums, fashion, and numerous other areas. This article presents an overview of augmented reality, discussing what it is, how it works, its current implementations, and its potential impact on libraries.

  9. Augmenting the access grid using augmented reality

    Science.gov (United States)

    Li, Ying

    2012-01-01

    The Access Grid (AG) targets an advanced collaboration environment, with which multi-party group of people from remote sites can collaborate over high-performance networks. However, current AG still employs VIC (Video Conferencing Tool) to offer only pure video for remote communication, while most AG users expect to collaboratively refer and manipulate the 3D geometric models of grid services' results in live videos of AG session. Augmented Reality (AR) technique can overcome the deficiencies with its characteristics of combining virtual and real, real-time interaction and 3D registration, so it is necessary for AG to utilize AR to better assist the advanced collaboration environment. This paper introduces an effort to augment the AG by adding support for AR capability, which is encapsulated in the node service infrastructure, named as Augmented Reality Service (ARS). The ARS can merge the 3D geometric models of grid services' results and real video scene of AG into one AR environment, and provide the opportunity for distributed AG users to interactively and collaboratively participate in the AR environment with better experience.

  10. Interactive augmented reality

    OpenAIRE

    Moret Gabarró, Roger

    2010-01-01

    Projecte final de carrera realitzat en col.laboració amb el Royal Institute of Technology Augmented reality can provide a new experience to users by adding virtual objects where they are relevant in the real world. The new generation of mobile phones offers a platform to develop augmented reality application for industry as well as for the general public. Although some applications are reaching commercial viability, the technology is still limited. The main problem designers have to face w...

  11. Confronting an augmented reality

    Directory of Open Access Journals (Sweden)

    John Hedberg

    2012-08-01

    Full Text Available How can educators make use of augmented reality technologies and practices to enhance learning and why would we want to embrace such technologies anyway? How can an augmented reality help a learner confront, interpret and ultimately comprehend reality itself? In this article, we seek to initiate a discussion that focuses on these questions, and suggest that they be used as drivers for research into effective educational applications of augmented reality. We discuss how multi-modal, sensorial augmentation of reality links to existing theories of education and learning, focusing on ideas of cognitive dissonance and the confrontation of new realities implied by exposure to new and varied perspectives. We also discuss connections with broader debates brought on by the social and cultural changes wrought by the increased digitalisation of our lives, especially the concept of the extended mind. Rather than offer a prescription for augmentation, our intention is to throw open debate and to provoke deep thinking about what interacting with and creating an augmented reality might mean for both teacher and learner.

  12. Everything Augmented: On the Real in Augmented Reality

    Directory of Open Access Journals (Sweden)

    Hanna Schraffenberger

    2014-12-01

    Full Text Available What is augmented in Augmented Reality (AR? In this paper, we review existing opinions and show how little consensus exists on this matter. Subsequently, we approach the question from a theoretical and technology-independent perspective. We identify spatial and content-based relationships between the virtual and the real as being decisive for AR and come to the conclusion that virtual content augments that to which it relates. Subsequently, we categorize different forms of AR based on what is augmented. We distinguish between augmented environments, augmented objects, augmented humans and augmented content and consider the possibility of augmented perception. The categories are illustrated with AR (art works and conceptual differences between them are pointed out. Moreover, we discuss what the real contributes to AR and how it can shape (future AR experiences. A summary of our findings and suggestions for future research and practice, such as research into multimodal and crossmodal AR, conclude the paper.

  13. Augmented marked graphs

    CERN Document Server

    Cheung, King Sing

    2014-01-01

    Petri nets are a formal and theoretically rich model for the modelling and analysis of systems. A subclass of Petri nets, augmented marked graphs possess a structure that is especially desirable for the modelling and analysis of systems with concurrent processes and shared resources.This monograph consists of three parts: Part I provides the conceptual background for readers who have no prior knowledge on Petri nets; Part II elaborates the theory of augmented marked graphs; finally, Part III discusses the application to system integration. The book is suitable as a first self-contained volume

  14. Prototyping Augmented Reality

    CERN Document Server

    Mullen, Tony

    2011-01-01

    Learn to create augmented reality apps using Processing open-source programming language Augmented reality (AR) is used all over, and you may not even realize it. Smartphones overlay data onto live camera views to show homes for sale, restaurants, or historical sites. American football broadcasts use AR to show the invisible first-down line on the field to TV viewers. Nike and Budweiser, among others, have used AR in ads. Now, you can learn to create AR prototypes using 3D data, Processing open-source programming language, and other languages. This unique book is an easy-to-follow guide on how

  15. The Augmented Book

    OpenAIRE

    Miller, D

    2015-01-01

    The Augmented Book: Sherwood Rise 30 January 2015 at 14:48 From 2012-13 I carried out practice-based research for the UNESCO future of the book project. The aim was to consider the future of the book using new media technology, particularly Augmented Reality (AR) on mobile phones. My research question was: How could digital media and physical books work together and interact to make a coherent story? I set about making an interactive story where participatory interaction with digital media vi...

  16. Towards Pervasive Augmented Reality: Context-Awareness in Augmented Reality.

    Science.gov (United States)

    Grubert, Jens; Langlotz, Tobias; Zollmann, Stefanie; Regenbrecht, Holger

    2017-06-01

    Augmented Reality is a technique that enables users to interact with their physical environment through the overlay of digital information. While being researched for decades, more recently, Augmented Reality moved out of the research labs and into the field. While most of the applications are used sporadically and for one particular task only, current and future scenarios will provide a continuous and multi-purpose user experience. Therefore, in this paper, we present the concept of Pervasive Augmented Reality, aiming to provide such an experience by sensing the user's current context and adapting the AR system based on the changing requirements and constraints. We present a taxonomy for Pervasive Augmented Reality and context-aware Augmented Reality, which classifies context sources and context targets relevant for implementing such a context-aware, continuous Augmented Reality experience. We further summarize existing approaches that contribute towards Pervasive Augmented Reality. Based our taxonomy and survey, we identify challenges for future research directions in Pervasive Augmented Reality.

  17. Augmented Reality Binoculars.

    Science.gov (United States)

    Oskiper, Taragay; Sizintsev, Mikhail; Branzoi, Vlad; Samarasekera, Supun; Kumar, Rakesh

    2015-05-01

    In this paper we present an augmented reality binocular system to allow long range high precision augmentation of live telescopic imagery with aerial and terrain based synthetic objects, vehicles, people and effects. The inserted objects must appear stable in the display and must not jitter and drift as the user pans around and examines the scene with the binoculars. The design of the system is based on using two different cameras with wide field of view and narrow field of view lenses enclosed in a binocular shaped shell. Using the wide field of view gives us context and enables us to recover the 3D location and orientation of the binoculars much more robustly, whereas the narrow field of view is used for the actual augmentation as well as to increase precision in tracking. We present our navigation algorithm that uses the two cameras in combination with an inertial measurement unit and global positioning system in an extended Kalman filter and provides jitter free, robust and real-time pose estimation for precise augmentation. We have demonstrated successful use of our system as part of information sharing example as well as a live simulated training system for observer training, in which fixed and rotary wing aircrafts, ground vehicles, and weapon effects are combined with real world scenes.

  18. Collaboration in Augmented Reality

    NARCIS (Netherlands)

    Lukosch, S.; Billinghurst, M.; Alem, L.; Kiyokawa, K.

    2015-01-01

    Augmented Reality (AR) is a technology that allows users to view and interact in real time with virtual images seamlessly superimposed over the real world. AR systems can be used to create unique collaborative experiences. For example, co-located users can see shared 3D virtual objects that they

  19. Augmented reality som wearable

    DEFF Research Database (Denmark)

    Buhl, Mie; Rahn, Annette

    2015-01-01

    Artiklen omhandler design og implementering af Augmented Reality (AR) i form af en wearable i sygeplejerskeuddannelsens anatomiundervisning, mere specifikt undervisning i lungeanatomi og respiration, med fokus på potentialer for visuel læring. Projektet undersøger, hvordan en udviklet AR...

  20. Augmented Reality og kulturarv

    DEFF Research Database (Denmark)

    Nielsen, Mikkel Kirkedahl Lysholm

    2013-01-01

    Museerne står overfor at skulle omfavne den digitale kultur i håndteringen af den store mængde viden, institutionerne repræsenterer. Augmented Reality-systemer forbinder ved hjælp af moderne teknologi det virtuelle med det virkelige, og kan derfor synes som en oplagt anvendelsesmulighed i...

  1. Augmented Reality i naturfagsundervisningen

    DEFF Research Database (Denmark)

    Radmer, Ole; Surland, Mogens; Nielsen, Birgitte Lund

    Augmented Reality (AR) giver ny mulighed for, at elever kan lave undersøgelser i naturfag med enkel teknologi, hvor animationer og simulationer kobles med det virkelige fænomen. I workshoppen kan I afprøve AR eksempler, udviklet i et internationalt EU projekt. Der vil være noget, der direkte kan...

  2. AR DOC: Augmented reality documentaries

    DEFF Research Database (Denmark)

    Vistisen, Peter

    2014-01-01

    Augmented Reality Documentaries (AR DOC) er et ’lille’ Shareplay projekt (ansøgte midler augmented reality cross media løsninger, til at skabe engagerende publikumsformidling...... indenfor oplevelsesindustrien. Projektet har genereret ny viden omkring, hvordan fysisk og digital formidling kan understøttes via Augmented Reality som formidlingsformat....

  3. Augmenting Clozapine With Sertindole

    DEFF Research Database (Denmark)

    Nielsen, Jimmi; Emborg, Charlotte; Gydesen, Susanne

    2012-01-01

    . The study design was a 12-week, double-blind, randomized, placebo-controlled study including patients with International Statistical Classification of Diseases, 10th Revision schizophrenia (F20.0-F20.3) and treated with clozapine for at least 6 months who had not achieved sufficient response. Patients were...... Inventory, fasting glucose, lipids, and electrocardiogram. Clozapine augmentation with sertindole was not superior to placebo regarding total score or subscale score of the Positive and Negative Syndrome Scale, Clinical Global Impression, World Health Organization Quality of Life Brief, or Drug Attitude...... Inventory. No increased adverse effects compared with placebo were found. Four patients randomized to sertindole experienced a significant worsening of psychosis, and 2 of them required psychiatric admission. Metabolic parameters were unchanged during the study, but augmentation of clozapine with sertindole...

  4. Transaxillary Endoscopic Breast Augmentation

    Directory of Open Access Journals (Sweden)

    Hyung-Bo Sim

    2014-09-01

    Full Text Available The axillary technique is the most popular approach to breast augmentation among Korean women. Transaxillary breast augmentation is now conducted with sharp electrocautery dissection under direct endoscopic vision throughout the entire process. The aims of this method are clear: both a bloodless pocket and a sharp non-traumatic dissection. Round textured or anatomical cohesive gel implants have been used to make predictable well-defined inframammary creases because textured surface implants demonstrated a better stability attributable to tissue adherence compared with smooth surface implants. The axillary endoscopic technique has greatly evolved, and now the surgical results are comparable to those with the inframammary approach. The author feels that this technique is an excellent choice for young patients with an indistinct or absent inframammary fold, who do not want a scar in the aesthetic unit of their chest.

  5. Augmented reality services

    Directory of Open Access Journals (Sweden)

    Tomáš Koubek

    2013-01-01

    Full Text Available We assume that one of the key reasons is in the difference between a standalone application and a web service. Both architectures have some advantages and disadvantages. The Standalone application (e.g. Nokia/OVI Maps provides the required functionality. From the user point of view, main asset of this “offline” approach is network connectivity independence. However, this kind of applications must be upgraded manually. Moreover, it is hard to get any data about the application usage because it requires additional actions from the user – data are usually acquired through conventional ways, such as email or web forms.The online service such as Google Maps (including its mobile application can offer the same functionality as the offline application. Nevertheless, a permanent connection to provider servers is necessary. This can be taken as a drawback. On the other hand, usage data collection is easier and can be done without the user intervention. The data collection provides a valuable analysis basis of the user habits and needs. This analysis is necessary for design of a complex “user” based solutions such as Google Now.Augmented reality applications are usually based on the first mentioned approach. In this article, we describe our model of augmented reality as a service and compare its features with standalone solutions. Further, other important key aspects for large emergence of augmented reality services in a mainstream market are discussed.

  6. Radiative Augmented Combustion.

    Science.gov (United States)

    1985-08-12

    86-0085 In 00I to RADIATIVE AUGMENTED COMBUSTION MOSHE LAVID M.L. ENERGIA , INC. P.O. BOX 1468 1 PRINCETON, NEW JERSEY 08542 AUGUST 1985 *.. plo...Combustion conducted at M.L. ENERGIA . It is funded by the Air Force Office of Scientific Research under Contract No. F49620-83-C-0133, with Dr. J.M...reported. It covers the second year of the contract, from July 15, 1984 through July 14, 1985. The work was performed at ENERGIA , Princeton, New Jersey

  7. AMI: Augmented Michelson Interferometer

    Science.gov (United States)

    Furió, David; Hachet, Martin; Guillet, Jean-Paul; Bousquet, Bruno; Fleck, Stéphanie; Reuter, Patrick; Canioni, Lionel

    2015-10-01

    Experiments in optics are essential for learning and understanding physical phenomena. The problem with these experiments is that they are generally time consuming for both their construction and their maintenance, potentially dangerous through the use of laser sources, and often expensive due to high technology optical components. We propose to simulate such experiments by way of hybrid systems that exploit both spatial augmented reality and tangible interaction. In particular, we focus on one of the most popular optical experiments: the Michelson interferometer. In our approach, we target a highly interactive system where students are able to interact in real time with the Augmented Michelson Interferometer (AMI) to observe, test hypotheses and then to enhance their comprehension. Compared to a fully digital simulation, we are investigating an approach that benefits from both physical and virtual elements, and where the students experiment by manipulating 3D-printed physical replicas of optical components (e.g. lenses and mirrors). Our objective is twofold. First, we want to ensure that the students will learn with our simulator the same concepts and skills that they learn with traditional methods. Second, we hypothesis that such a system opens new opportunities to teach optics in a way that was not possible before, by manipulating concepts beyond the limits of observable physical phenomena. To reach this goal, we have built a complementary team composed of experts in the field of optics, human-computer interaction, computer graphics, sensors and actuators, and education science.

  8. Augmented Reality for Science Education

    DEFF Research Database (Denmark)

    Brandt, Harald; Nielsen, Birgitte Lund; Georgsen, Marianne

    Augmented reality (AR) holds great promise as a learning tool. So far, however, most research has looked at the technology itself – and AR has been used primarily for commercial purposes. As a learning tool, AR supports an inquiry-based approach to science education with a high level of student...... involvement. The AR-sci-project (Augmented Reality for SCIence education) addresses the issue of applying augmented reality in developing innovative science education and enhancing the quality of science teaching and learning....

  9. Augmented reality in medical education?

    National Research Council Canada - National Science Library

    Kamphuis, Carolien; Barsom, Esther; Schijven, Marlies; Christoph, Noor

    2014-01-01

    .... Educational technology and more specifically augmented reality (AR) has the potential to offer a highly realistic situated learning experience supportive of complex medical learning and transfer...

  10. [Augmented spontaneous breathing].

    Science.gov (United States)

    Hachenberg, T

    1996-09-01

    Impaired pulmonary gas exchange can result from lung parenchymal failure inducing oxygenation deficiency and fatigue of the respiratory muscles, which is characterized by hypercapnia or a combination of both mechanisms. Contractility of and coordination between the diaphragm and the thoracoabdominal respiratory muscles predominantly determine the efficiency of spontaneous breathing. Sepsis, cardiac failure, malnutrition or acute changes of the load conditions may induce fatigue of the respiratory muscles. Augmentation of spontaneous breathing is not only achieved by the application of different technical principles or devices; it also has to improve perfusion, metabolism, load conditions and contractility of the respiratory muscles. Intermittent mandatory ventilation (IMV) allows spontaneous breathing of the patient and augments alveolar ventilation by periodically applying positive airway pressure tidal volumes, which are generated by the respirator. Potential advantages include lower mean airway pressure (PAW), as compared with controlled mechanical ventilation, and improved haemodynamics. Suboptimal IMV systems may impose increased work and oxygen cost of breathing, fatigue of the respiratory muscles and CO2 retention. During pressure support ventilation (PSV), inspiratory alterations of PAW or gas flow (trigger) are detected by the respirator, which delivers a gas flow to maintain PAW at a fixed value (usually 5-20 cm H2O) during inspiration. PSV may be combined with other modalities of respiratory therapy such as IMV or CPAP. Claimed advantages of PSV include decreased effort of breathing, reduced systemic and respiratory muscle consumption of oxygen, prophylaxis of diaphragmatic fatigue and an improved extubation rate after prolonged periods of mechanical ventilation. Minimum alveolar ventilation is not guaranteed during PSV; thus, close observation of the patient is mandatory to avoid serious respiratory complications. Continuous positive airway pressure

  11. Augmented reality system

    Science.gov (United States)

    Lin, Chien-Liang; Su, Yu-Zheng; Hung, Min-Wei; Huang, Kuo-Cheng

    2010-08-01

    In recent years, Augmented Reality (AR)[1][2][3] is very popular in universities and research organizations. The AR technology has been widely used in Virtual Reality (VR) fields, such as sophisticated weapons, flight vehicle development, data model visualization, virtual training, entertainment and arts. AR has characteristics to enhance the display output as a real environment with specific user interactive functions or specific object recognitions. It can be use in medical treatment, anatomy training, precision instrument casting, warplane guidance, engineering and distance robot control. AR has a lot of vantages than VR. This system developed combines sensors, software and imaging algorithms to make users feel real, actual and existing. Imaging algorithms include gray level method, image binarization method, and white balance method in order to make accurate image recognition and overcome the effects of light.

  12. Augmented Virtual Reality Laboratory

    Science.gov (United States)

    Tully-Hanson, Benjamin

    2015-01-01

    Real time motion tracking hardware has for the most part been cost prohibitive for research to regularly take place until recently. With the release of the Microsoft Kinect in November 2010, researchers now have access to a device that for a few hundred dollars is capable of providing redgreenblue (RGB), depth, and skeleton data. It is also capable of tracking multiple people in real time. For its original intended purposes, i.e. gaming, being used with the Xbox 360 and eventually Xbox One, it performs quite well. However, researchers soon found that although the sensor is versatile, it has limitations in real world applications. I was brought aboard this summer by William Little in the Augmented Virtual Reality (AVR) Lab at Kennedy Space Center to find solutions to these limitations.

  13. Today in breast augmentation

    Directory of Open Access Journals (Sweden)

    Juan Manuel Calderón

    2016-02-01

    Full Text Available Breast augmentation is one of the most commonly performed procedures worldwide among aesthetic reconstructive surgeries. Among the indications for performing the procedure are primary and secondary alterations related to breasts shape and volume. During the initial assessment, emphasis should be placed in the anamnesis and physical examination, allowing to define target sizing and realistic expectations to prospectively determine the possible postoperative satisfaction rates. There are several methods used to select the appropriate implants that have become more accurate with time and with the use of technology. Although there are multiple materials developed, to this moment silicone implants continue to be the ones most used worldwide with low complication rates depending on each patient and on the technique used. It is considered as one of the aesthetic reconstructive surgeries with the highest degree of acceptance among the general population who undergo this type of procedures.

  14. Augmented nonlinear differentiator design

    Science.gov (United States)

    Shao, Xingling; Liu, Jun; Yang, Wei; Tang, Jun; Li, Jie

    2017-06-01

    This paper presents a sigmoid function based augmented nonlinear differentiator (AND) for calculating the noise-less time derivative from a noisy measurement. The prominent advantages of the present differentiation technique are: (i) compared to the existing tracking differentiators, better noise suppression ability can be achieved without appreciable delay; (ii) the enhanced noise-filtering mechanism not only can be applied to the designed differentiator, but also can be extended for improving noise-tolerance capability of the available differentiators. In addition, the convergence property and robustness performance against noises are investigated via singular perturbation theory and describing function method, respectively. Also, comparison with several classical differentiators is given to illustrate the superiority of AND in noise suppression. Finally, applications on autopilot design and displacement following for nonlinear mass spring mechanical system are given to demonstrate the effectiveness and applicability of the proposed AND technique.

  15. Maxillary sinus augmentation

    Directory of Open Access Journals (Sweden)

    A B Tarun Kumar

    2015-01-01

    Full Text Available Placing dental implants in the maxillary posterior region can be both challenging and un-nerving for a regular implant dentist who is not well versed with advanced surgical procedures. It is vital for a general dentist to understand the fundamentals of bone grafting the maxillary sinus if he/she is really committed to providing the best health care for their patients. The dental practice is seeing an increasing group of patients who are living longer, and this group of older baby boomers often has an edentulous posterior maxilla either unilateral or bilateral. When edentulous, the posterior maxilla more likely has diminished bone height, which does not allow for the placement of dental implants without creating additional bone. Through grafting the maxillary sinus, bone of ideal quality can be created (allowing for placement of dental implants, which offer many advantages over other tooth replacement modalities. The sinus graft offers the dental patient a predictable procedure of regenerating lost osseous structure in the posterior maxilla. This offers the patient many advantages for long-term success. If dentists understand these concepts, they can better educate their patients and guide them to have the procedure performed. This article outlines bone grafting of the maxillary sinus for the purpose of placing dental implants. This review will help the readers to understand the intricacies of sinus augmentation. They can relate their patient's condition with the available literature and chalk out the best treatment plan for the patient, especially by using indirect sinus augmentation procedures which are less invasive and highly successful if done using prescribed technique.

  16. Augmented Reality Comes to Physics

    Science.gov (United States)

    Buesing, Mark; Cook, Michael

    2013-01-01

    Augmented reality (AR) is a technology used on computing devices where processor-generated graphics are rendered over real objects to enhance the sensory experience in real time. In other words, what you are really seeing is augmented by the computer. Many AR games already exist for systems such as Kinect and Nintendo 3DS and mobile apps, such as…

  17. The Augmented REality Sandtable (ARES)

    Science.gov (United States)

    2015-10-01

    Augmented Reality Interface Tactical map with browser and manipulators / tangible markers Yes Yes Unknown No Kalphat (2009) Tactical......Augmented REality Sandtable (ARES) by Charles R Amburn, Nathan L Vey, and MAJ Jerry R Mize Human Research and Engineering Directorate, ARL Michael

  18. Antioxidative defense

    Directory of Open Access Journals (Sweden)

    Stevanović Jelka

    2011-01-01

    Full Text Available Free radicals occur constantly during metabolism and take part in numerous physiological processes, such as: intra-cellular and inter-cellular signalization, gene expression, removal of damaged or senescent cells, and control of the tone of blood vessels. However, there is an increased quantity of free radicals in situations of so-called oxidative stress, when they cause serious damage to cellular membranes (peroxidation of their lipids, damage of membrane proteins, and similar, to interior cellular protein molecules, as well as DNA molecules and carbohydrates. This is precisely why the organism has developed numerous mechanisms for removing free radicals and/or preventing their production. Some of these are enzyme-related and include superoxide-dismutase, catalase, glutathione-peroxidase, and others. Other, non-enzyme mechanisms, imply antioxidative activities of vitamins E and C, provitamin A, coenzyme Q, reduced glutation, and others. Since free radicals can leave the cell that has produced them and become dispersed throughout the body, in addition to antioxidative defense that functions within cellular structures, antioxidant extra-cellular defense has also been developed. This is comprised by: transferrin, lactoferrin, haptoglobin, hemopexin, ceruloplasmin, albumins, extra-cellular isoform SOD, extracellular glutathione-peroxidase, glucose, bilirubin, urates, and many other molecules.

  19. Understanding augmented reality concepts and applications

    CERN Document Server

    Craig, Alan B

    2013-01-01

    Augmented reality is not a technology. Augmented reality is a medium. Likewise, a book on augmented reality that only addresses the technology that is required to support the medium of augmented reality falls far short of providing the background that is needed to produce, or critically consume augmented reality applications. One reads a book. One watches a movie. One experiences augmented reality. Understanding Augmented Reality addresses the elements that are required to create compelling augmented reality experiences. The technology that supports

  20. Augmented Reality Comes to Physics

    Science.gov (United States)

    Buesing, Mark; Cook, Michael

    2013-04-01

    Augmented reality (AR) is a technology used on computing devices where processor-generated graphics are rendered over real objects to enhance the sensory experience in real time. In other words, what you are really seeing is augmented by the computer. Many AR games already exist for systems such as Kinect and Nintendo 3DS and mobile apps, such as Tagwhat and Star Chart (a must for astronomy class). The yellow line marking first downs in a televised football game2 and the enhanced puck that makes televised hockey easier to follow3 both use augmented reality to do the job.

  1. Augmented Reality for Science Education

    DEFF Research Database (Denmark)

    Brandt, Harald; Nielsen, Birgitte Lund; Georgsen, Marianne

    2015-01-01

    Augmented reality (AR) holds great promise as a learning tool. So far, however, most research has looked at the technology itself – and AR has been used primarily for commercial purposes. As a learning tool, AR supports an inquiry-based approach to science education with a high level of student i...... involvement. The AR-sci-project (Augmented Reality for SCIence education) addresses the issue of applying augmented reality in developing innovative science education and enhancing the quality of science teaching and learning....

  2. Augmented reality som wearable technology

    DEFF Research Database (Denmark)

    Rahn, Annette

    the potential of Augmented reality increasing students level of understanding, interaction and engagement with the object. I will demonstrate the technology and show you the human lungs in your body and the future perspectives of the technology. Organization: developed in collaboration with Mie Buhl, Professor......“How Augmented reality can facilitate learning in visualizing human anatomy “ At this station I demonstrate how Augmented reality can be used to visualize the human lungs in situ and as a wearable technology which establish connection between body, image and technology in education. I will show...

  3. Antioxidant supplementation enhances bacterial peritonitis in mice by inhibiting phagocytosis.

    Science.gov (United States)

    Goswami, Manish; Sharma, Deepak; Khan, Nazir M; Checker, Rahul; Sandur, Santosh Kumar; Jawali, Narendra

    2014-03-01

    Antioxidants are known to exhibit numerous health benefits including anti-ageing, anti-apoptotic and immuno-stimulatory effects. However, we present the data showing counterproductive effects of therapeutically relevant antioxidants on bacterial clearance by the immune system in a murine peritonitic model. The antioxidants ascorbic acid, glutathione and N-acetylcysteine augmented morbidity and mortality in mice carrying Eshcerichia coli-induced acute bacterial peritonitis. Treatment of peritonitic mice with antioxidants significantly increased their bacterial load in the range of 0.3-2 logs. Antioxidant administration to peritonitic mice resulted in decreased numbers of macrophages, B-cells and dendritic cells at the primary site of infection and increased neutrophil infiltration. Serum TNF-α levels were also decreased in antioxidant-treated peritonitic mice. In vitro experiments showed that antioxidants reduced the phagocytic efficacy of peritoneal macrophages by ~60-75% and also decreased E. coli-induced oxidative burst in macrophages cells. Taken together, our data indicate that the antioxidants increased the severity of peritonitis by decreasing the phagocytic efficiency, oxidative burst, and TNF-α production, and increasing neutrophil infiltration. Based on these results, we propose that antioxidant supplementation during the course of bacterial infection is not recommended as it could be detrimental for the host. In addition, the present study underlines the importance of timing and context of antioxidant administration rather than indiscriminate usage to gain the best possible therapeutic advantage of these redox compounds.

  4. Crime Scenes as Augmented Reality

    DEFF Research Database (Denmark)

    Sandvik, Kjetil

    2010-01-01

    , physical damage: they are all readable and interpretable signs. As augmented reality the crime scene carries a narrative which at first is hidden and must be revealed. Due to the process of investigation and the detective's ability to reason and deduce, the crime scene as place is reconstructed as virtual......Using the concept of augmented reality, this article will investigate how places in various ways have become augmented by means of different mediatization strategies. Augmentation of reality implies an enhancement of the places' emotional character: a certain mood, atmosphere or narrative surplus...... of meaning has been implemented. This may take place at different levels, which will be presented and investigated in this article and exemplified by some cases from the fields of tourism and computer games.                       The article suggests that we may use the forensic term crime scene in order...

  5. Military Applications of Augmented Reality

    Science.gov (United States)

    2011-01-01

    interest in AR technology has a long history. The Ultrasound Augmented Reality project [State et al(1996)] is one note- worthy example of a project...Many military bases have “towns” for training that consist of concrete block buildings with multiple levels and architec- tural configurations. AR...Livingston MA, Hirota G, Garrett WF, Whitton MC, Pisano ED, Fuchs H (1996) Technologies for augmented reality systems: Realizing ultrasound -guided

  6. Bayesian Alternation During Tactile Augmentation

    Directory of Open Access Journals (Sweden)

    Caspar Mathias Goeke

    2016-10-01

    Full Text Available A large number of studies suggest that the integration of multisensory signals by humans is well described by Bayesian principles. However, there are very few reports about cue combination between a native and an augmented sense. In particular, we asked the question whether adult participants are able to integrate an augmented sensory cue with existing native sensory information. Hence for the purpose of this study we build a tactile augmentation device. Consequently, we compared different hypotheses of how untrained adult participants combine information from a native and an augmented sense. In a two-interval forced choice (2 IFC task, while subjects were blindfolded and seated on a rotating platform, our sensory augmentation device translated information on whole body yaw rotation to tactile stimulation. Three conditions were realized: tactile stimulation only (augmented condition, rotation only (native condition, and both augmented and native information (bimodal condition. Participants had to choose one out of two consecutive rotations with higher angular rotation. For the analysis, we fitted the participants’ responses with a probit model and calculated the just notable difference (JND. Then we compared several models for predicting bimodal from unimodal responses. An objective Bayesian alternation model yielded a better prediction (χred2 = 1.67 than the Bayesian integration model (χred2= 4.34. Slightly higher accuracy showed a non-Bayesian winner takes all model (χred2= 1.64, which either used only native or only augmented values per subject for prediction. However the performance of the Bayesian alternation model could be substantially improved (χred2= 1.09 utilizing subjective weights obtained by a questionnaire. As a result, the subjective Bayesian alternation model predicted bimodal performance most accurately among all tested models. These results suggest that information from augmented and existing sensory modalities in

  7. Comprehensible visualization for augmented reality.

    Science.gov (United States)

    Kalkofen, Denis; Mendez, Erick; Schmalstieg, Dieter

    2009-01-01

    This article presents interactive visualizations to support the comprehension of spatial relationships between virtual and real world objects for Augmented Reality (AR) applications. To enhance the clarity of such relationships we discuss visualization techniques and their suitability for AR. We apply them on different AR applications with different goals, e.g. in X-Ray vision or in applications which draw a user's attention to an object of interest. We demonstrate how Focus and Context (F+C) visualizations are used to affect the user's perception of hidden or nearby objects by presenting contextual information in the area of augmentation. We discuss the organization and the possible sources of data for visualizations in Augmented Reality and present cascaded and multi level F+C visualizations to address complex, cluttered scenes that are inevitable in real environments. This article also shows filters and tools to interactively control the amount of augmentation. It compares the impact of real world context preserving to a pure virtual and uniform enhancement of these structures for augmentations of real world imagery. Finally this paper discusses the stylization of sparse object representations for AR to improve X-Ray vision.

  8. Augmented reality for breast imaging.

    Science.gov (United States)

    Rancati, Alberto; Angrigiani, Claudio; Nava, Maurizio B; Catanuto, Giuseppe; Rocco, Nicola; Ventrice, Fernando; Dorr, Julio

    2018-02-21

    Augmented reality (AR) enables the superimposition of virtual reality reconstructions onto clinical images of a real patient, in real time. This allows visualization of internal structures through overlying tissues, thereby providing a virtual transparency vision of surgical anatomy. AR has been applied to neurosurgery, which utilizes a relatively fixed space, frames, and bony references; the application of AR facilitates the relationship between virtual and real data. Augmented Breast imaging (ABI) is described. Breast MRI studies for breast implant patients with seroma were performed using a Siemens 3T system with a body coil and a four-channel bilateral phased-array breast coil as the transmitter and receiver, respectively. The contrast agent used was (CA) gadolinium (Gd) injection (0.1 mmol/kg at 2 ml/s) by a programmable power injector. Dicom formated images data from 10 MRI cases of breast implant seroma and 10 MRI cases with T1-2 N0 M0 breast cancer, were imported and transformed into Augmented reality images. Augmented breast imaging (ABI) demonstrated stereoscopic depth perception, focal point convergence, 3D cursor use, and joystick fly-through. Augmented breast imaging (ABI) to the breast can improve clinical outcomes, giving an enhanced view of the structures to work on. It should be further studied to determine its utility in clinical practice.

  9. Augmented Reality Tower Technology Assessment

    Science.gov (United States)

    Reisman, Ronald J.; Brown, David M.

    2009-01-01

    Augmented Reality technology may help improve Air Traffic Control Tower efficiency and safety during low-visibility conditions. This paper presents the assessments of five off-duty controllers who shadow-controlled' with an augmented reality prototype in their own facility. Initial studies indicated unanimous agreement that this technology is potentially beneficial, though the prototype used in the study was not adequate for operational use. Some controllers agreed that augmented reality technology improved situational awareness, had potential to benefit clearance, control, and coordination tasks and duties and could be very useful for acquiring aircraft and weather information, particularly aircraft location, heading, and identification. The strongest objections to the prototype used in this study were directed at aircraft registration errors, unacceptable optical transparency, insufficient display performance in sunlight, inadequate representation of the static environment and insufficient symbology.

  10. Augmented reality som wearable technology

    DEFF Research Database (Denmark)

    Rahn, Annette

    2016-01-01

    “How Augmented reality can facilitate learning in visualizing human anatomy “ At this station I demonstrate how Augmented reality can be used to visualize the human lungs in situ and as a wearable technology which establish connection between body, image and technology in education. I will show...... the potential of Augmented reality increasing students level of understanding, interaction and engagement with the object. I will demonstrate the technology and show you the human lungs in your body and the future perspectives of the technology. Organization: developed in collaboration with Mie Buhl, Professor...... MSO, Aalborg University, Copenhagen. Annette Rahn, MSc, senior lecturer and teacher in anatomy and physiology at the School of Nursing, VIA Health- and Welfare Technology, VIA University College....

  11. Augmentation-related brain plasticity

    Science.gov (United States)

    Di Pino, Giovanni; Maravita, Angelo; Zollo, Loredana; Guglielmelli, Eugenio; Di Lazzaro, Vincenzo

    2014-01-01

    Today, the anthropomorphism of the tools and the development of neural interfaces require reconsidering the concept of human-tools interaction in the framework of human augmentation. This review analyses the plastic process that the brain undergoes when it comes into contact with augmenting artificial sensors and effectors and, on the other hand, the changes that the use of external augmenting devices produces in the brain. Hitherto, few studies investigated the neural correlates of augmentation, but clues on it can be borrowed from logically-related paradigms: sensorimotor training, cognitive enhancement, cross-modal plasticity, sensorimotor functional substitution, use and embodiment of tools. Augmentation modifies function and structure of a number of areas, i.e., primary sensory cortices shape their receptive fields to become sensitive to novel inputs. Motor areas adapt the neuroprosthesis representation firing-rate to refine kinematics. As for normal motor outputs, the learning process recruits motor and premotor cortices and the acquisition of proficiency decreases attentional recruitment, focuses the activity on sensorimotor areas and increases the basal ganglia drive on the cortex. Augmentation deeply relies on the frontoparietal network. In particular, premotor cortex is involved in learning the control of an external effector and owns the tool motor representation, while the intraparietal sulcus extracts its visual features. In these areas, multisensory integration neurons enlarge their receptive fields to embody supernumerary limbs. For operating an anthropomorphic neuroprosthesis, the mirror system is required to understand the meaning of the action, the cerebellum for the formation of its internal model and the insula for its interoception. In conclusion, anthropomorphic sensorized devices can provide the critical sensory afferences to evolve the exploitation of tools through their embodiment, reshaping the body representation and the sense of the self

  12. AUGMENTATION-RELATED BRAIN PLASTICITY

    Directory of Open Access Journals (Sweden)

    Giovanni eDi Pino

    2014-06-01

    Full Text Available Today, the anthropomorphism of the tools and the development of neural interfaces require reconsidering the concept of human-tools interaction in the framework of human augmentation. This review analyzes the plastic process that the brain undergoes when it comes into contact with augmenting artificial sensors and effectors and, on the other hand, the changes that the use of external augmenting devices produces in the brain.Hitherto, few studies investigated the neural correlates of augmentation, but clues on it can be borrowed from logically-related paradigms: sensorimotor training, cognitive enhancement, cross-modal plasticity, sensorimotor functional substitution, use and embodiment of tools.Augmentation modifies function and structure of a number of areas, i.e. primary sensory cortices shape their receptive fields to become sensitive to novel inputs. Motor areas adapt the neuroprosthesis representation firing-rate to refine kinematics. As for normal motor outputs, the learning process recruits motor and premotor cortices and the acquisition of proficiency decreases attentional recruitment, focuses the activity on sensorimotor areas and increases the basal ganglia drive on the cortex. Augmentation deeply relies on the frontoparietal network. In particular, premotor cortex is involved in learning the control of an external effector and owns the tool motor representation, while the intraparietal sulcus extracts its visual features. In these areas, multisensory integration neurons enlarge their receptive fields to embody supernumerary limbs. For operating an anthropomorphic neuroprosthesis, the mirror system is required to understand the meaning of the action, the cerebellum for the formation of its internal model and the insula for its interoception. In conclusion, anthropomorphic sensorized devices can provide the critical sensory afferences to evolve the exploitation of tools through their embodiment, reshaping the body representation and the

  13. Augmented reality for anatomical education.

    Science.gov (United States)

    Thomas, Rhys Gethin; John, Nigel William; Delieu, John Michael

    2010-03-01

    The use of Virtual Environments has been widely reported as a method of teaching anatomy. Generally such environments only convey the shape of the anatomy to the student. We present the Bangor Augmented Reality Education Tool for Anatomy (BARETA), a system that combines Augmented Reality (AR) technology with models produced using Rapid Prototyping (RP) technology, to provide the student with stimulation for touch as well as sight. The principal aims of this work were to provide an interface more intuitive than a mouse and keyboard, and to evaluate such a system as a viable supplement to traditional cadaver based education.

  14. Augmented Reality in Science Education

    DEFF Research Database (Denmark)

    Nielsen, Birgitte Lund; Brandt, Harald; Swenson, Hakon

    Augmented reality (AR) holds great promise as a learning tool. However, most extant studies in this field have focused on the technology itself. The poster presents findings from the first stage of the AR-sci project addressing the issue of applying AR for educational purposes. Benefits and chall......Augmented reality (AR) holds great promise as a learning tool. However, most extant studies in this field have focused on the technology itself. The poster presents findings from the first stage of the AR-sci project addressing the issue of applying AR for educational purposes. Benefits...

  15. Augmented Reality for Science Education

    DEFF Research Database (Denmark)

    Brandt, Harald; Nielsen, Birgitte Lund; Georgsen, Marianne

    Augmented reality (AR) holds great promise as a learning tool. So far, however, most research has looked at the technology itself – and AR has been used primarily for commercial purposes. As a learning tool, AR supports an inquiry-based approach to science education with a high level of student i...

  16. Augmented Reality in Science Education

    DEFF Research Database (Denmark)

    Nielsen, Birgitte Lund; Brandt, Harald; Swensen, Hakon

    Augmented reality (AR) holds great promise as a learning tool. However, most extant studies in this field have focused on the technology itself. The poster presents findings from the first stage of the AR-sci project addressing the issue of applying AR for educational purposes. Benefits...

  17. Antioxidant-Induced Stress

    Science.gov (United States)

    Villanueva, Cleva; Kross, Robert D.

    2012-01-01

    Antioxidants are among the most popular health-protecting products, sold worldwide without prescription. Indeed, there are many reports showing the benefits of antioxidants but only a few questioning the possible harmful effects of these “drugs”. The normal balance between antioxidants and free radicals in the body is offset when either of these forces prevails. The available evidence on the harmful effects of antioxidants is analyzed in this review. In summary, a hypothesis is presented that “antioxidant-induced stress” results when antioxidants overwhelm the body’s free radicals. PMID:22408440

  18. Antioxidant-Induced Stress

    Directory of Open Access Journals (Sweden)

    Robert D. Kross

    2012-02-01

    Full Text Available Antioxidants are among the most popular health-protecting products, sold worldwide without prescription. Indeed, there are many reports showing the benefits of antioxidants but only a few questioning the possible harmful effects of these “drugs”. The normal balance between antioxidants and free radicals in the body is offset when either of these forces prevails. The available evidence on the harmful effects of antioxidants is analyzed in this review. In summary, a hypothesis is presented that “antioxidant-induced stress” results when antioxidants overwhelm the body’s free radicals.

  19. Augmented assessment as a means to augmented reality.

    Science.gov (United States)

    Bergeron, Bryan

    2006-01-01

    Rigorous scientific assessment of educational technologies typically lags behind the availability of the technologies by years because of the lack of validated instruments and benchmarks. Even when the appropriate assessment instruments are available, they may not be applied because of time and monetary constraints. Work in augmented reality, instrumented mannequins, serious gaming, and similar promising educational technologies that haven't undergone timely, rigorous evaluation, highlights the need for assessment methodologies that address the limitations of traditional approaches. The most promising augmented assessment solutions incorporate elements of rapid prototyping used in the software industry, simulation-based assessment techniques modeled after methods used in bioinformatics, and object-oriented analysis methods borrowed from object oriented programming.

  20. Use of Augmented Reality in Education

    OpenAIRE

    Jeřábek, Tomáš

    2014-01-01

    This thesis deals with phenomena of augmented reality in context of didactics. The thesis aims to define augmented reality in conceptual and content area and focuses on augmented reality in the structure of educational tools and identification of its functions and use from the didactical standpoint. The thesis characterizes augmented reality as a specific technological-perceptual concept and establishes a system of perceptual, technological and resulting aspects that reflect important paramet...

  1. Augmented Reality for Multi-disciplinary Collaboration

    OpenAIRE

    Wang, Xiangyu; Rui,

    2010-01-01

    This chapter presents a framework for multi-disciplinary collaboration. Tangible Augmented Reality has been raised as one of suitable systems for design collaboration. Furthermore, it emphasizes the advantages of Tangible Augmented Reality to illustrate the needs for integrating the Tangible User Interfaces and Augmented Reality Systems.

  2. Antioxidants in dermatology

    Directory of Open Access Journals (Sweden)

    Varadraj V Pai

    2014-01-01

    Full Text Available Antioxidants neutralize free radicals produced by various environmental insults such as ultraviolet radiation, cigarette smoke and air pollutants, thereby preventing cellular damage. The role of oxidative stress and antioxidants is known in diseases like obesity, atherosclerosis, and Alzheimer′s disease. Herein we discuss the effects of oxidative stress on the skin and role of antioxidants in dermatology.

  3. Antioxidants in dermatology

    OpenAIRE

    Pai, Varadraj V.; Shukla, Pankaj; Kikkeri, Naveen Narayanshetty

    2014-01-01

    Antioxidants neutralize free radicals produced by various environmental insults such as ultraviolet radiation, cigarette smoke and air pollutants, thereby preventing cellular damage. The role of oxidative stress and antioxidants is known in diseases like obesity, atherosclerosis, and Alzheimer′s disease. Herein we discuss the effects of oxidative stress on the skin and role of antioxidants in dermatology.

  4. Ridge augmentation in implant dentistry

    Directory of Open Access Journals (Sweden)

    Manoj Goyal

    2015-01-01

    Full Text Available Dimensional changes in the alveolar ridge after extraction often compromises on achieving optimal implant stability and placement of implants in the right prosthodontic positions. These situations demand augmentation of the residual ridge to achieve successful implant placement and long-term survival. Although the available literature speaks of an overabundance of techniques and agents for ridge augmentation, there is a relative paucity of quality evidence to guide the selection of suitable techniques and material. Henceforth, this paper is an endeavor to develop and describe an evidence-based decision pathway for the selection of suitable techniques for various clinical situations. Additionally, a descriptive overview of various techniques and materials is presented.

  5. Augmented reality building operations tool

    Science.gov (United States)

    Brackney, Larry J.

    2014-09-09

    A method (700) for providing an augmented reality operations tool to a mobile client (642) positioned in a building (604). The method (700) includes, with a server (660), receiving (720) from the client (642) an augmented reality request for building system equipment (612) managed by an energy management system (EMS) (620). The method (700) includes transmitting (740) a data request for the equipment (612) to the EMS (620) and receiving (750) building management data (634) for the equipment (612). The method (700) includes generating (760) an overlay (656) with an object created based on the building management data (634), which may be sensor data, diagnostic procedures, or the like. The overlay (656) is configured for concurrent display on a display screen (652) of the client (642) with a real-time image of the building equipment (612). The method (700) includes transmitting (770) the overlay (656) to the client (642).

  6. Digital Illumination for Augmented Studios

    OpenAIRE

    Bimber, Oliver; Grundhöfer, Anselm; Zollmann, Stefanie; Kolster, Daniel

    2006-01-01

    Virtual studio technology plays an important role for modern television productions. Blue-screen matting is a common technique for integrating real actors or moderators into computer generated sceneries. Augmented reality offers the possibility to mix real and virtual in a more general context. This article proposes a new technological approach for combining real studio content with computergenerated information. Digital light projection allows a controlled spatial, temporal, chrominance a...

  7. Media-Augmented Exercise Machines

    Science.gov (United States)

    Krueger, T.

    2002-01-01

    Cardio-vascular exercise has been used to mitigate the muscle and cardiac atrophy associated with adaptation to micro-gravity environments. Several hours per day may be required. In confined spaces and long duration missions this kind of exercise is inevitably repetitive and rapidly becomes uninteresting. At the same time, there are pressures to accomplish as much as possible given the cost- per-hour for humans occupying orbiting or interplanetary. Media augmentation provides a the means to overlap activities in time by supplementing the exercise with social, recreational, training or collaborative activities and thereby reducing time pressures. In addition, the machine functions as an interface to a wide range of digital environments allowing for spatial variety in an otherwise confined environment. We hypothesize that the adoption of media augmented exercise machines will have a positive effect on psycho-social well-being on long duration missions. By organizing and supplementing exercise machines, data acquisition hardware, computers and displays into an interacting system this proposal increases functionality with limited additional mass. This paper reviews preliminary work on a project to augment exercise equipment in a manner that addresses these issues and at the same time opens possibilities for additional benefits. A testbed augmented exercise machine uses a specialty built cycle trainer as both input to a virtual environment and as an output device from it using spatialized sound, and visual displays, vibration transducers and variable resistance. The resulting interactivity increases a sense of engagement in the exercise, provides a rich experience of the digital environments. Activities in the virtual environment and accompanying physiological and psychological indicators may be correlated to track and evaluate the health of the crew.

  8. Real-time augmented face

    OpenAIRE

    Lepetit, V.; Vacchetti, L; Thalmann, D; Fua, P.

    2003-01-01

    This real-time augmented reality demonstration relies on our tracking algorithm described in V. Lepetit et al (2003). This algorithm considers natural feature points, and then does not require engineering of the environment. It merges the information from preceding frames in traditional recursive tracking fashion with that provided by a very limited number of reference frames. This combination results in a system that does not suffer from jitter and drift, and can deal with drastic changes. T...

  9. Effect of fermentation on the antioxidant activity in plant-based foods.

    Science.gov (United States)

    Hur, Sun Jin; Lee, Seung Yuan; Kim, Young-Chan; Choi, Inwook; Kim, Geun-Bae

    2014-10-01

    This study provides an overview of the factors that influence the effect of fermentation on the antioxidant activity and the mechanisms that augment antioxidative activities in fermented plant-based foods. The ability of fermentation to improve antioxidant activity is primarily due to an increase in the amount of phenolic compounds and flavonoids during fermentation, which is the result of a microbial hydrolysis reaction. Moreover, fermentation induces the structural breakdown of plant cell walls, leading to the liberation or synthesis of various antioxidant compounds. These antioxidant compounds can act as free radical terminators, metal chelators, singlet oxygen quenchers, or hydrogen donors to radicals. The production of protease, α-amylase and some other enzymes can be influenced by fermentation that may have metal ion chelation activity. Because the mechanisms that affect antioxidant activity during fermentation are extremely varied, further investigation is needed to establish the precise mechanisms for these processes. Copyright © 2014 Elsevier Ltd. All rights reserved.

  10. Robotic assisted laparoscopic augmentation ileocystoplasty

    Directory of Open Access Journals (Sweden)

    Peter A. Caputo

    Full Text Available ABSTRACT Introduction: Augmentation ileocystoplasty is a common treatment in adults with low capacity bladders due to neurogenic bladder dysfunction. We describe here our technique for robotic assisted laparoscopic augmentation ileocystoplasty in an adult with a low capacity bladder due to neurogenic bladder dysfunction. Materials and Methods: The patient is a 35 years-old man with neurogenic bladder due to a C6 spinal cord injury in 2004. Cystometrogram shows a maximum capacity of 96cc and Pdet at maximum capacity of 97cmH2O. He manages his bladder with intermittent catheterization and experiences multiple episodes of incontinence between catheterizations. He experiences severe autonomic dysreflexia symptoms with indwelling urethral catheter. He has previously failed non operative management options of his bladder dysfunction. Our surgical technique utilizes 6 trocars, of note a 12mm assistant trocar is placed 1cm superior to the pubic symphysis, and this trocar is solely used to pass a laparoscopic stapler to facilitate the excision of the ileal segment and the enteric anastomosis. Surgical steps include: development of the space of Retzius/dropping the bladder; opening the bladder from the anterior to posterior bladder neck; excision of a segment of ileum; enteric anastomosis; detubularizing the ileal segment; suturing the ileal segment to the incised bladder edge. Results: The surgery had no intraoperative complications. Operative time was 286 minutes (4.8 hours. Estimated blood loss was 50cc. Length of hospital stay was 8 days. He did experience a postoperative complication on hospital day 3 of hematemesis, which did not require blood transfusion. Cystometrogram at 22 days post operatively showed a maximum bladder capacity of 165cc with a Pdet at maximum capacity of 10cmH2O. Conclusions: As surgeon comfort and experience with robotic assisted surgery grows, robotic surgery can successfully be applied to less frequently performed procedures

  11. Webizing mobile augmented reality content

    Science.gov (United States)

    Ahn, Sangchul; Ko, Heedong; Yoo, Byounghyun

    2014-01-01

    This paper presents a content structure for building mobile augmented reality (AR) applications in HTML5 to achieve a clean separation of the mobile AR content and the application logic for scaling as on the Web. We propose that the content structure contains the physical world as well as virtual assets for mobile AR applications as document object model (DOM) elements and that their behaviour and user interactions are controlled through DOM events by representing objects and places with a uniform resource identifier. Our content structure enables mobile AR applications to be seamlessly developed as normal HTML documents under the current Web eco-system.

  12. Augmented reality in intraventricular neuroendoscopy.

    Science.gov (United States)

    Finger, T; Schaumann, A; Schulz, M; Thomale, Ulrich-W

    2017-06-01

    Individual planning of the entry point and the use of navigation has become more relevant in intraventricular neuroendoscopy. Navigated neuroendoscopic solutions are continuously improving. We describe experimentally measured accuracy and our first experience with augmented reality-enhanced navigated neuroendoscopy for intraventricular pathologies. Augmented reality-enhanced navigated endoscopy was tested for accuracy in an experimental setting. Therefore, a 3D-printed head model with a right parietal lesion was scanned with a thin-sliced computer tomography. Segmentation of the tumor lesion was performed using Scopis NovaPlan navigation software. An optical reference matrix is used to register the neuroendoscope's geometry and its field of view. The pre-planned ROI and trajectory are superimposed in the endoscopic image. The accuracy of the superimposed contour fitting on endoscopically visualized lesion was acquired by measuring the deviation of both midpoints to one another. The technique was subsequently used in 29 cases with CSF circulation pathologies. Navigation planning included defining the entry points, regions of interests and trajectories, superimposed as augmented reality on the endoscopic video screen during intervention. Patients were evaluated for postoperative imaging, reoperations, and possible complications. The experimental setup revealed a deviation of the ROI's midpoint from the real target by 1.2 ± 0.4 mm. The clinical study included 18 cyst fenestrations, ten biopsies, seven endoscopic third ventriculostomies, six stent placements, and two shunt implantations, being eventually combined in some patients. In cases of cyst fenestrations postoperatively, the cyst volume was significantly reduced in all patients by mean of 47%. In biopsies, the diagnostic yield was 100%. Reoperations during a follow-up period of 11.4 ± 10.2 months were necessary in two cases. Complications included one postoperative hygroma and one insufficient

  13. Augmented reality in medical education?

    Science.gov (United States)

    Kamphuis, Carolien; Barsom, Esther; Schijven, Marlies; Christoph, Noor

    2014-09-01

    Learning in the medical domain is to a large extent workplace learning and involves mastery of complex skills that require performance up to professional standards in the work environment. Since training in this real-life context is not always possible for reasons of safety, costs, or didactics, alternative ways are needed to achieve clinical excellence. Educational technology and more specifically augmented reality (AR) has the potential to offer a highly realistic situated learning experience supportive of complex medical learning and transfer. AR is a technology that adds virtual content to the physical real world, thereby augmenting the perception of reality. Three examples of dedicated AR learning environments for the medical domain are described. Five types of research questions are identified that may guide empirical research into the effects of these learning environments. Up to now, empirical research mainly appears to focus on the development, usability and initial implementation of AR for learning. Limited review results reflect the motivational value of AR, its potential for training psychomotor skills and the capacity to visualize the invisible, possibly leading to enhanced conceptual understanding of complex causality.

  14. Aspects of User Experience in Augmented Reality

    OpenAIRE

    Madsen, Jacob Boesen

    2016-01-01

    In Augmented Reality applications, the real environment is annotated or enhanced with computer-generated graphics.This is a topic that has been researched in the recent decades, but for many people this is a brand new and never heard of topic.The main focus of this thesis is investigations in human factors related to Augmented Reality. This is investigated partly as how Augmented Reality applications are used in unsupervised settings, and partly in specific evaluations related to user perform...

  15. AB027. Penile augmentation: informed text briefing

    OpenAIRE

    Park, Nam Cheol

    2016-01-01

    The men?s desire to have larger and longer penis have created endless medical demands throughout human history. Until up to date, various medical skills for penile augmentation have developed in aspect of experimental and clinical outcome. Recently with throwing away socially unacceptable ideas, the need for penile augmentation is considered as equivalent level with mammoplasty for breast augmentation in women for cosmetic and psychological reason. Concurrently advanced technologies in medica...

  16. Interactive Assembly Guide using Augmented Reality

    DEFF Research Database (Denmark)

    Andersen, Martin; Andersen, Rasmus Skovgaard; Larsen, Christian Lindequist

    2009-01-01

    This paper presents an Augmented Reality system for aiding a pump assembling process at Grundfos, one of the leading pump producers. Stable pose estimation of the pump is required in order to augment the graphics correctly. This is achieved by matching image edges with synthesized edges from CAD...... norm. A dynamic visualization of the augmented graphics provides the user with guidance. Usability tests show that the accuracy of the system is sufficient for assembling the pump....

  17. Enhancing tourism with augmented and virtual reality

    OpenAIRE

    Jenny, Sandra

    2017-01-01

    Augmented and virtual reality are on the advance. In the last twelve months, several interesting devices have entered the market. Since tourism is one of the fastest growing economic sectors in the world and has become one of the major players in international commerce, the aim of this thesis was to examine how tourism could be enhanced with augmented and virtual reality. The differences and functional principles of augmented and virtual reality were investigated, general uses were described ...

  18. A review of antioxidants

    Directory of Open Access Journals (Sweden)

    R S Birangane

    2011-01-01

    Full Text Available Antioxidants play the essential role in reducing the free radicals. Free radicals can cause various changes in human body from DNA mutation to cell death. Free radical formation form the biological basis of several medical problems including cancer. The antioxidants are useful in preventing the transfer of premalignant lesion to malignancy- Hence are usually prescribed in oral premalignant lesions like leukoplakia, lichen planus, oral submucous fibrosis. Antioxidants include beta carotene, carotenoid, vitamin C, vitamin E, trace elements like zinc and selenium. Functions of these antioxidants are discussed here.

  19. Antioxidants of Edible Mushrooms.

    Science.gov (United States)

    Kozarski, Maja; Klaus, Anita; Jakovljevic, Dragica; Todorovic, Nina; Vunduk, Jovana; Petrović, Predrag; Niksic, Miomir; Vrvic, Miroslav M; van Griensven, Leo

    2015-10-27

    Oxidative stress caused by an imbalanced metabolism and an excess of reactive oxygen species (ROS) lead to a range of health disorders in humans. Our endogenous antioxidant defense mechanisms and our dietary intake of antioxidants potentially regulate our oxidative homeostasis. Numerous synthetic antioxidants can effectively improve defense mechanisms, but because of their adverse toxic effects under certain conditions, preference is given to natural compounds. Consequently, the requirements for natural, alternative sources of antioxidant foods identified in edible mushrooms, as well as the mechanistic action involved in their antioxidant properties, have increased rapidly. Chemical composition and antioxidant potential of mushrooms have been intensively studied. Edible mushrooms might be used directly in enhancement of antioxidant defenses through dietary supplementation to reduce the level of oxidative stress. Wild or cultivated, they have been related to significant antioxidant properties due to their bioactive compounds, such as polyphenols, polysaccharides, vitamins, carotenoids and minerals. Antioxidant and health benefits, observed in edible mushrooms, seem an additional reason for their traditional use as a popular delicacy food. This review discusses the consumption of edible mushrooms as a powerful instrument in maintaining health, longevity and life quality.

  20. Antioxidants of Edible Mushrooms

    Directory of Open Access Journals (Sweden)

    Maja Kozarski

    2015-10-01

    Full Text Available Oxidative stress caused by an imbalanced metabolism and an excess of reactive oxygen species (ROS lead to a range of health disorders in humans. Our endogenous antioxidant defense mechanisms and our dietary intake of antioxidants potentially regulate our oxidative homeostasis. Numerous synthetic antioxidants can effectively improve defense mechanisms, but because of their adverse toxic effects under certain conditions, preference is given to natural compounds. Consequently, the requirements for natural, alternative sources of antioxidant foods identified in edible mushrooms, as well as the mechanistic action involved in their antioxidant properties, have increased rapidly. Chemical composition and antioxidant potential of mushrooms have been intensively studied. Edible mushrooms might be used directly in enhancement of antioxidant defenses through dietary supplementation to reduce the level of oxidative stress. Wild or cultivated, they have been related to significant antioxidant properties due to their bioactive compounds, such as polyphenols, polysaccharides, vitamins, carotenoids and minerals. Antioxidant and health benefits, observed in edible mushrooms, seem an additional reason for their traditional use as a popular delicacy food. This review discusses the consumption of edible mushrooms as a powerful instrument in maintaining health, longevity and life quality.

  1. Augmented reality in dentistry: a current perspective.

    Science.gov (United States)

    Kwon, Ho-Beom; Park, Young-Seok; Han, Jung-Suk

    2018-02-21

    Augmentation reality technology offers virtual information in addition to that of the real environment and thus opens new possibilities in various fields. The medical applications of augmentation reality are generally concentrated on surgery types, including neurosurgery, laparoscopic surgery and plastic surgery. Augmentation reality technology is also widely used in medical education and training. In dentistry, oral and maxillofacial surgery is the primary area of use, where dental implant placement and orthognathic surgery are the most frequent applications. Recent technological advancements are enabling new applications of restorative dentistry, orthodontics and endodontics. This review briefly summarizes the history, definitions, features, and components of augmented reality technology and discusses its applications and future perspectives in dentistry.

  2. A study on volunteer augmentation navigation technology

    Science.gov (United States)

    Wu, HaiTao; Lu, XiaoChun; Zou, DeCai; Han, Tao

    2011-06-01

    Navigation augmentation technology is one of the most common methods to increase the continuity, reliability and integrity of the global satellite navigation system. The concept of volunteer augmentation navigation (VNA) is proposed and the elements and topological structure of VNA are also analyzed in this paper. The study focuses on the neural network model that volunteers and ordinary users use modern communication information network to exchange self-organizing information. The neural cell model of Volunteer Augmentation Navigation using shared information is built. Thus interactive general relative positioning is realized. Then basic theories and methods of volunteer augmentation navigation are formed on the basis of the above-mentioned study. This study of realization mechanism of volunteer augmentation technology helps to form a relatively integral architecture of volunteer augmentation navigation. A user self-service satellite navigation augmentation which combines information exchange and navigation services may strengthen the continuity, reliability and integrity of the navigation system. The volunteer augmentation navigation theory proposed in this paper improves the traditional satellite navigation application model and expands the connotation and denotation of satellite navigation augmentation methods.

  3. Evaluation of wound healing, anti-microbial and antioxidant potential of Pongamia pinnata in wistar rats

    Directory of Open Access Journals (Sweden)

    Deepak Dwivedi

    2017-01-01

    Conclusion: Increased wound contraction and tensile strength, augmented hydroxyproline and hexosamine content, antioxidative activity and moderate antimicrobial activity support the early wound healing exhibited by P. pinnata. Induction in cytokine production may be one of the mechanisms in accelerating the wound healing. Results suggest that P. pinnata may be useful in tropical management of wound healing.

  4. Augmented reality for improved safety

    CERN Multimedia

    Stefania Pandolfi

    2016-01-01

    Sometimes, CERN experts have to operate in low visibility conditions or in the presence of possible hazards. Minimising the duration of the operation and reducing the risk of errors is therefore crucial to ensuring the safety of personnel. The EDUSAFE project integrates different technologies to create a wearable personnel safety system based on augmented reality.    The EDUSAFE integrated safety system uses a camera mounted on the helmet to monitor the working area.  In its everyday operation of machines and facilities, CERN adopts a whole set of measures and safety equipment to ensure the safety of its personnel, including personal wearable safety devices and access control systems. However, sometimes, scheduled and emergency maintenance work needs to be done in zones with potential cryogenic hazards, in the presence of radioactive equipment or simply in demanding conditions where visibility is low and moving around is difficult. The EDUSAFE Marie Curie Innovative&...

  5. Augmented Reality and Mobile Art

    Science.gov (United States)

    Gwilt, Ian

    The combined notions of augmented-reality (AR) and mobile art are based on the amalgamation of a number of enabling technologies including computer imaging, emergent display and tracking systems and the increased computing-power in hand-held devices such as Tablet PCs, smart phones, or personal digital assistants (PDAs) which have been utilized in the making of works of art. There is much published research on the technical aspects of AR and the ongoing work being undertaken in the development of faster more efficient AR systems [1] [2]. In this text I intend to concentrate on how AR and its associated typologies can be applied in the context of new media art practices, with particular reference to its application on hand-held or mobile devices.

  6. Sensory augmentation for the blind

    Directory of Open Access Journals (Sweden)

    Silke Manuela Kärcher

    2012-03-01

    Full Text Available Enacted theories of consciousness conjecture that perception and cognition arise from an active experience of the regular relations that are tying together the sensory stimulation of different modalities and associated motor actions. Previous experiments investigated this concept by employing the technique of sensory substitution. Building on these studies, here we test a set of hypotheses derived from this framework and investigate the utility of sensory augmentation in handicapped people. We provide a late blind subject with a new set of sensorimotor laws: A vibro-tactile belt continually signals the direction of magnetic north. The subject completed a set of behavioral tests before and after an extended training period. The tests were complemented by questionnaires and interviews. This newly supplied information improved performance on different time scales. In a pointing task we demonstrate an instant improvement of performance based on the signal provided by the device. Furthermore, the signal was helpful in relevant daily tasks, often complicated for the blind, such as keeping a direction over longer distances or taking shortcuts in familiar environments. A homing task with an additional attentional load demonstrated a significant improvement after training. The subject found the directional information highly expedient for the adjustment of his inner maps of familiar environments and describes an increase in his feeling of security when exploring unfamiliar environments with the belt. The results give evidence for a firm integration of the newly supplied signals into the behavior of this late blind subject with better navigational performance and more courageous behavior in unfamiliar environments. Most importantly, the complementary information provided by the belt lead to a positive emotional impact with enhanced feeling of security. This experimental approach demonstrates the potential of sensory augmentation devices for the help of

  7. Antioxidants: Beyond the Hype

    Science.gov (United States)

    ... al. The SU.VI.MAX Study: a randomized, placebo-controlled trial of the health effects of antioxidant vitamins and minerals. Arch Intern Med. ... Stiles W, Statkute L, et al. Double-masked, placebo-controlled, randomized trial of ... F. Effect of lutein and antioxidant dietary supplementation on contrast ...

  8. Antioxidants of edible mushrooms

    NARCIS (Netherlands)

    Kozarski, Maja; Klaus, Anita; Jakovljevic, Dragica; Todorovic, Nina; Vunduk, Jovana; Petrović, Predrag; Niksic, Miomir; Vrvic, Miroslav M.; Griensven, Van Leo

    2015-01-01

    Oxidative stress caused by an imbalanced metabolism and an excess of reactive oxygen species (ROS) lead to a range of health disorders in humans. Our endogenous antioxidant defense mechanisms and our dietary intake of antioxidants potentially regulate our oxidative homeostasis. Numerous synthetic

  9. Use of engineered bone for sinus augmentation.

    Science.gov (United States)

    Beaumont, Christian; Schmidt, Roswitha J; Tatakis, Dimitris N; Zafiropoulos, Gregory-George

    2008-03-01

    Tissue-engineered bone grafts represent an appealing alternative for maxillary sinus augmentation because they eliminate the significant drawbacks associated with extra- and intraoral bone-harvesting procedures. In the present case series, we document the outcomes of sinus augmentation surgery using tissue-engineered bone grafts. Three patients requiring bilateral sinus augmentation received tissue-engineered bone grafts combined with xenograft prior to implant placement. Implants were placed and loaded 6 and 12 months postaugmentation, respectively. Radiographs were taken and clinical examinations were performed preoperatively and at 4, 6, 12, and 18 months postaugmentation. Biopsies were obtained at 4 and 6 months postaugmentation. Standardized orthopantomograms were used to measure the posterior maxilla bone height. None of the patients experienced untoward complications during or following the therapeutic procedures. Ten implants were inserted into the augmented sinuses and loaded. Biopsies revealed a lack of inflammation or pathology; newly formed fibrous bone with osteoblastic activity and xenograft particles was evident. Compared to 4 months postaugmentation, augmented tissue was more mature at 6 months. The postoperative (18 months) bone height in augmented areas was significantly greater than the preoperative height (P bone height. Sinus augmentation using tissue-engineered bone grafts was successful in all three cases, permitting the subsequent insertion and loading of dental implants. The present cases demonstrated the feasibility of using engineered bone for sinus augmentation. Controlled clinical trials will be required to evaluate this new and evolving treatment modality.

  10. Enhancing Education through Mobile Augmented Reality

    Science.gov (United States)

    Joan, D. R. Robert

    2015-01-01

    In this article, the author has discussed about the Mobile Augmented Reality and enhancing education through it. The aim of the present study was to give some general information about mobile augmented reality which helps to boost education. Purpose of the current study reveals the mobile networks which are used in the institution campus as well…

  11. Augmented Reality Interfaces for Additive Manufacturing

    DEFF Research Database (Denmark)

    Eiríksson, Eyþór Rúnar; Pedersen, David Bue; Frisvad, Jeppe Revall

    2017-01-01

    This paper explores potential use cases for using augmented reality (AR) as a tool to operate industrial machines. As a baseline we use an additive manufacturing system, more commonly known as a 3D printer. We implement novel augmented interfaces and controls using readily available open source...

  12. From Augmentation Media to Meme Media.

    Science.gov (United States)

    Tanaka, Yuzuru

    Computers as meta media are now evolving from augmentation media vehicles to meme media vehicles. While an augmentation media system provides a seamlessly integrated environment of various tools and documents, meme media system provides further functions to edit and distribute tools and documents. Documents and tools on meme media can easily…

  13. Aspects of User Experience in Augmented Reality

    DEFF Research Database (Denmark)

    Madsen, Jacob Boesen

    In Augmented Reality applications, the real environment is annotated or enhanced with computer-generated graphics. This is a topic that has been researched in the recent decades, but for many people this is a brand new and never heard of topic. The main focus of this thesis is investigations...... in human factors related to Augmented Reality. This is investigated partly as how Augmented Reality applications are used in unsupervised settings, and partly in specific evaluations related to user performance in supervised settings. The thesis starts by introducing Augmented Reality to the reader......, followed by a presentation of the technical areas related to the field, and different human factor areas. As a contribution to the research area, this thesis presents five separate, but sequential, papers within the area of Augmented Reality....

  14. Augmentation Quotients for Real Representation Rings of Cyclic ...

    Indian Academy of Sciences (India)

    29

    Augmentation Quotients for Real Representation Rings of Cyclic Groups. Article Type: Reseach Article. Keywords: cyclic group; real representation; augmentation ideal; augmentation quotient. Corresponding Author: Hang Liu, Ph.D. Shaanxi Normal University. Xi'an, Shaanxi CHINA. Corresponding Author Secondary.

  15. Antioxidant Stabilisation of Polymers

    Science.gov (United States)

    Shlyapnikov, Yurii A.

    1981-06-01

    Physicochemical aspects of the stabilisation of polymers are discussed. Attention is paid mainly to the aging and stabilisation of polymers under processing conditions. Topics considered are the kinetics and mechanism of the high-temperature oxidation of polymers, critical phenomena in the inhibited oxidation of polymers, the theory of synergism and antagonism among antioxidants, the reasons for differences in efficiency of antioxidants, and certain aspects of the relation between the efficiency of antioxidants and their molecular structure. A list of 132 references is included.

  16. Augmented Reality in Tourism - Research and Applications Overview

    National Research Council Canada - National Science Library

    Anabel L. Kečkeš; Igor Tomičić

    2017-01-01

    Augmented reality is a complex interdisciplinary field utilizing information technologies in diverse areas such as medicine, education, architecture, industry, tourism and others, augmenting the real...

  17. Augmented reality: past, present, future

    Science.gov (United States)

    Inzerillo, Laura

    2013-03-01

    A great opportunity has permitted to carry out a cultural, historical, architectural and social research with great impact factor on the international cultural interest. We are talking about the realization of a museum whose the main theme is the visit and the discovery of a monument of great prestige: the monumental building the "Steri" in Palermo. The museum is divided into sub themes including the one above all, that has aroused the international interest so much that it has been presented the instance to include the museum in the cultural heritage of UNESCO. It is the realization of a museum path that regards the cells of the Inquisition, which are located just inside of some buildings of the monumental building. The project, as a whole, is faced, in a total view, between the various competences implicated: historic, chemic, architectonic, topographic, drawing, representation, virtual communication, informatics. The birth of the museum will be a sum of the results of all these disciplines involved. Methodology, implementation, fruition, virtual museum, goals, 2D graphic restitution, effects on the cultural heritage and landscape environmental, augmented reality, Surveying 2D and 3D, hi-touch screen, Photogrammetric survey, Photographic survey, representation, drawing 3D and more than this has been dealt with this research.

  18. Digital Augmented Reality Audio Headset

    Directory of Open Access Journals (Sweden)

    Jussi Rämö

    2012-01-01

    Full Text Available Augmented reality audio (ARA combines virtual sound sources with the real sonic environment of the user. An ARA system can be realized with a headset containing binaural microphones. Ideally, the ARA headset should be acoustically transparent, that is, it should not cause audible modification to the surrounding sound. A practical implementation of an ARA mixer requires a low-latency headphone reproduction system with additional equalization to compensate for the attenuation and the modified ear canal resonances caused by the headphones. This paper proposes digital IIR filters to realize the required equalization and evaluates a real-time prototype ARA system. Measurements show that the throughput latency of the digital prototype ARA system can be less than 1.4 ms, which is sufficiently small in practice. When the direct and processed sounds are combined in the ear, a comb filtering effect is brought about and appears as notches in the frequency response. The comb filter effect in speech and music signals was studied in a listening test and it was found to be inaudible when the attenuation is 20 dB. Insert ARA headphones have a sufficient attenuation at frequencies above about 1 kHz. The proposed digital ARA system enables several immersive audio applications, such as a virtual audio tourist guide and audio teleconferencing.

  19. Augmented reality for mining teleoperation

    Science.gov (United States)

    Park, Andrew J.; Kazman, Rick N.

    1995-12-01

    Automated mining has been proposed as a solution to reducing mining costs associated with labor and development. Quite simply, no-one will need to work underground. A series of special-purpose mining vehicles is currently being designed for both semi-autonomous operation and teleoperation. A preliminary implementation at INCO's North Mine complex in Copper Cliff, Ontario, Canada, has met with great success. Improvements are required, however, in the presentation and integration of feedback from the remotely operated vehicle due to the poor video image quality. Depth cues in particular have been found to be deficient. Work currently underway at the University of Waterloo involves the development of a graphics engine responsible for the integration and rendering of data from various sources including: live video (analog and/or digital), range-finding data, an intelligent vision system, CAD mine models, and supervisory control and data acquisition systems. Graphical overlays on a live video feed are being examined as a means of enhancing and augmenting the human operator's visual input. We are investigating a tool-set which addresses the requirements of teleoperation in the context of a mining environment. This includes the integration of data from a number of different sources for the purpose of interactive mine planning and operation.

  20. Augmented reality in surgical procedures

    Science.gov (United States)

    Samset, E.; Schmalstieg, D.; Vander Sloten, J.; Freudenthal, A.; Declerck, J.; Casciaro, S.; Rideng, Ø.; Gersak, B.

    2008-02-01

    Minimally invasive therapy (MIT) is one of the most important trends in modern medicine. It includes a wide range of therapies in videoscopic surgery and interventional radiology and is performed through small incisions. It reduces hospital stay-time by allowing faster recovery and offers substantially improved cost-effectiveness for the hospital and the society. However, the introduction of MIT has also led to new problems. The manipulation of structures within the body through small incisions reduces dexterity and tactile feedback. It requires a different approach than conventional surgical procedures, since eye-hand co-ordination is not based on direct vision, but more predominantly on image guidance via endoscopes or radiological imaging modalities. ARIS*ER is a multidisciplinary consortium developing a new generation of decision support tools for MIT by augmenting visual and sensorial feedback. We will present tools based on novel concepts in visualization, robotics and haptics providing tailored solutions for a range of clinical applications. Examples from radio-frequency ablation of liver-tumors, laparoscopic liver surgery and minimally invasive cardiac surgery will be presented. Demonstrators were developed with the aim to provide a seamless workflow for the clinical user conducting image-guided therapy.

  1. Augmented reality for personalized nanomedicines.

    Science.gov (United States)

    Lee, Yugyung; Lee, Chi H

    As our understanding of onset and progress of diseases at the genetic and molecular level rapidly progresses, the potential of advanced technologies, such as 3D-printing, Socially-Assistive Robots (SARs) or augmented reality (AR), that are applied to personalized nanomedicines (PNMs) to alleviate pathological conditions, has become more prominent. Among advanced technologies, AR in particular has the greatest potential to address those challenges and facilitate the translation of PNMs into formidable clinical application of personalized therapy. As AR is about to adapt additional new methods, such as speech, voice recognition, eye tracing and motion tracking, to enable interaction with host response or biological systems in 3-D space, a combination of multiple approaches to accommodate varying environmental conditions, such as public noise and atmosphere brightness, will be explored to improve its therapeutic outcomes in clinical applications. For instance, AR glasses still being developed by Facebook or Microsoft will serve as new platform that can provide people with the health information they are interested in or various measures through which they can interact with medical services. This review has addressed the current progress and impact of AR on PNMs and its application to the biomedical field. Special emphasis is placed on the application of AR based PNMs to the treatment strategies against senior care, drug addiction and medication adherence. Published by Elsevier Inc.

  2. Determination of student opinions in augmented reality

    Directory of Open Access Journals (Sweden)

    Huseyin Bicen

    2016-11-01

    Full Text Available The rapid development of the new technology has changed classroom teaching methods and tools in a positive way. This study investigated the classroom learning with augmented reality and the impact of student opinions. 97 volunteer undergraduate students took part in this study. Results included data in the form of frequencies, percentages and descriptive statistics. The results show that, with gamification methods, augmented reality content affected students’ opinions in a positive way. When QR codes are used in the classroom, students feel independent from classroom materials and can access various resources. Moreover, students think that, when augmented reality in the classroom is used, education is more enjoyable.

  3. Augmented Reality in Architecture: Rebuilding Archeological Heritage

    Science.gov (United States)

    de la Fuente Prieto, J.; Castaño Perea, E.; Labrador Arroyo, F.

    2017-02-01

    With the development in recent years of augmented reality and the appearance of new mobile terminals and storage bases on-line, we find the possibility of using a powerful tool for transmitting architecture. This paper analyzes the relationship between Augmented Reality and Architecture. Firstly, connects the theoretical framework of both disciplines through the Representation concept. Secondly, describes the milestones and possibilities of Augmented Reality in the particular field of archaeological reconstruction. And lastly, once recognized the technology developed, we face the same analysis from a critical point of view, assessing their suitability to the discipline that concerns us is the architecture and within archeology.

  4. Evidence-Based Medicine: Breast Augmentation.

    Science.gov (United States)

    Schwartz, Michael R

    2017-07-01

    After reading this article, the participant should be able to: 1. Understand the key decisions in patient evaluation for cosmetic breast augmentation. 2. Cite key decisions in preoperative planning. 3. Discuss the risks and complications, and key patient education points in breast augmentation. Breast augmentation remains one of the most popular procedures in plastic surgery. The integral information necessary for proper patient selection, preoperative assessment, and surgical approaches are discussed. Current data regarding long term safety and complications are presented to guide the plastic surgeon to an evidence-based approach to the patient seeking breast enhancement to obtain optimal results.

  5. Antioxidative properties of flavonoids

    NARCIS (Netherlands)

    Bowedes, T.C.F.; Luttikhold, J.; Stijn, van M.F.M.; Visser, M.; Norren, van K.; Vermeulen, M.A.R.; Leeuwen, P.A.M.

    2011-01-01

    Evidence accumulates that a family of plant compounds, known as flavonoids, can prevent or slow down the progression of cardiovascular diseases, cancer, inflammatory and neurodegenerative diseases. Flavonoids are considered beneficial, this is often attributed to their powerful antioxidant

  6. Antioxidants: Protecting Healthy Cells

    Science.gov (United States)

    ... Workout Nutrition Timing Your Pre- and Post-Workout Nutrition weights and fruits Building Muscle on a Vegetarian Diet For Kids For Parents For Men For Women For Seniors Antioxidants - Protecting Healthy Cells Reviewed by Wendy Marcason, ...

  7. Atmospheric oxidation and antioxidants

    CERN Document Server

    Meurant, Gerard

    1993-01-01

    Volume I reviews current understanding of autoxidation, largely on the basis of the reactions of oxygen with characterised chemicals. From this flows the modern mechanism of antioxidant actions and their application in stabilisation technology.

  8. Antioxidant supplements and mortality

    DEFF Research Database (Denmark)

    Bjelakovic, Goran; Nikolova, Dimitrinka; Gluud, Christian

    2014-01-01

    Oxidative damage to cells and tissues is considered involved in the aging process and in the development of chronic diseases in humans, including cancer and cardiovascular diseases, the leading causes of death in high-income countries. This has stimulated interest in the preventive potential of a...... of antioxidant supplements. Today, more than one half of adults in high-income countries ingest antioxidant supplements hoping to improve their health, oppose unhealthy behaviors, and counteract the ravages of aging....

  9. Antioxidants in Translational Medicine.

    Science.gov (United States)

    Schmidt, Harald H H W; Stocker, Roland; Vollbracht, Claudia; Paulsen, Gøran; Riley, Dennis; Daiber, Andreas; Cuadrado, Antonio

    2015-11-10

    It is generally accepted that reactive oxygen species (ROS) scavenging molecules or antioxidants exert health-promoting effects and thus their consumption as food additives and nutraceuticals has been greatly encouraged. Antioxidants may be beneficial in situations of subclinical deficiency and increased demand or acutely upon high-dose infusion. However, to date, there is little clinical evidence for the long-term benefit of most antioxidants. Alarmingly, recent evidence points even to health risks, in particular for supplements of lipophilic antioxidants. The biological impact of ROS depends not only on their quantities but also on their chemical nature, (sub)cellular and tissue location, and the rates of their formation and degradation. Moreover, ROS serve important physiological functions; thus, inappropriate removal of ROS may cause paradoxical reductive stress and thereby induce or promote disease. Any recommendation on antioxidants must be based on solid clinical evidence and patient-relevant outcomes rather than surrogate parameters. Such evidence-based use may include site-directed application, time-limited high dosing, (functional) pharmacological repair of oxidized biomolecules, and triggers of endogenous antioxidant response systems. Ideally, these approaches need guidance by patient stratification through predictive biomarkers and possibly imaging modalities.

  10. Alveolar ridge augmentation by osteoinduction in rats

    DEFF Research Database (Denmark)

    Pinholt, E M; Bang, G; Haanaes, H R

    1990-01-01

    The purpose of this study was to evaluate bone substitutes for alveolar ridge augmentation by osteoinduction. Allogenic, demineralized, and lyophilized dentin and bone was tested for osteoinductive properties in order to establish an experimental model for further studies. Implantations were...

  11. Applied Augmented Reality for High Precision Maintenance

    Science.gov (United States)

    Dever, Clark

    Augmented Reality had a major consumer breakthrough this year with Pokemon Go. The underlying technologies that made that app a success with gamers can be applied to improve the efficiency and efficacy of workers. This session will explore some of the use cases for augmented reality in an industrial environment. In doing so, the environmental impacts and human factors that must be considered will be explored. Additionally, the sensors, algorithms, and visualization techniques used to realize augmented reality will be discussed. The benefits of augmented reality solutions in industrial environments include automated data recording, improved quality assurance, reduction in training costs and improved mean-time-to-resolution. As technology continues to follow Moore's law, more applications will become feasible as performance-per-dollar increases across all system components.

  12. ARC Code TI: ROC Curve Code Augmentation

    Data.gov (United States)

    National Aeronautics and Space Administration — ROC (Receiver Operating Characteristic) curve Code Augmentation was written by Rodney Martin and John Stutz at NASA Ames Research Center and is a modification of ROC...

  13. Augmented Reality Simulations on Handheld Computers

    Science.gov (United States)

    Squire, Kurt; Klopfer, Eric

    2007-01-01

    Advancements in handheld computing, particularly its portability, social interactivity, context sensitivity, connectivity, and individuality, open new opportunities for immersive learning environments. This article articulates the pedagogical potential of augmented reality simulations in environmental engineering education by immersing students in…

  14. Affordances in Mobile Augmented Reality Applications

    Directory of Open Access Journals (Sweden)

    Tor Gjøsæter

    2014-10-01

    Full Text Available This paper explores the affordances of augmented reality content in a mobile augmented reality application. A user study was conducted by performing a multi-camera video recording of seven think aloud sessions. The think aloud sessions consisted of individual users performing tasks, exploring and experiencing a mobile augmented reality (MAR application we developed for the iOS platform named ARad. We discuss the instrumental affordances we observed when users interacted with augmented reality content, as well as more complex affordances rising from conventions from media content, AR and the traditional WIMP paradigm. We find that remediation of traditional newspaper content through the MAR medium can provide engaging, pleasing and exciting user experiences. However, the some of the content still suffers from being shoveled onto the MAR platform without adapting it properly. Finally, we discuss what content was most successfully mediated to the user and how the content impacts the user experience.

  15. Improved diffuser for augmenting a wind turbine

    Science.gov (United States)

    Foreman, K.M.; Gilbert, B.L.

    A diffuser for augmenting a wind turbine having means for energizing the boundary layer at several locations along the diffuser walls is improved by the addition of a short collar extending radially outward from the outlet of the diffuser.

  16. Determination of student opinions in augmented reality

    OpenAIRE

    Huseyin Bicen; Erkan Bal

    2016-01-01

    The rapid development of the new technology has changed classroom teaching methods and tools in a positive way. This study investigated the classroom learning with augmented reality and the impact of student opinions. 97 volunteer undergraduate students took part in this study. Results included data in the form of frequencies, percentages and descriptive statistics. The results show that, with gamification methods, augmented reality content affected students’ opinions in a positive way. When ...

  17. Augmented monomials in terms of power sums.

    Science.gov (United States)

    Merca, Mircea

    2015-01-01

    The problem of base changes for the classical symmetric functions has been solved a long time ago and has been incorporated into most computer software packages for symmetric functions. In this paper, we develop a simple recursive formula for the expansion of the augmented monomial symmetric functions into power sum symmetric functions. As corollaries, we present two algorithms that can be used to expressing the augmented monomial symmetric functions in terms of the power sum symmetric functions.

  18. A Survey of Augmented Reality Navigation

    OpenAIRE

    Bhorkar, Gaurav

    2017-01-01

    Navigation has been a popular area of research in both academia and industry. Combined with maps, and different localization technologies, navigation systems have become robust and more usable. By combining navigation with augmented reality, it can be improved further to become realistic and user friendly. This paper surveys existing researches carried out in this area, describes existing techniques for building augmented reality navigation systems, and the problems faced.

  19. Augmented sport : exploring collective user experience

    OpenAIRE

    Pallot, Marc; EYNARD, Rémy; POUSSARD, Benjamin; CHRISTMANN, Olivier; Richir, Simon

    2013-01-01

    This paper explores existing theories, frameworks and models for handling collective user experience in the context of Distributed Interactive Multimedia Environments (DIME) and more specifically Augmented Sport applications. Besides discussing previous experimental work in the domain of Augmented Sport, we introduce Future Media Internet (FMI) technologies in relation with Mixed Reality (MR) platforms, user experience (UX), quality of Service (QoS) and quality of Experience (QoE) within 3D T...

  20. Visual Analysis and Filtering to Augment Cognition

    OpenAIRE

    Kölsch, Mathias; Wachs, Juan; Sadagic, Amela

    2013-01-01

    We built and demonstrated a system that augments instructors’ sensing abilities and augments their cognition through analysis and filtering of visual information. Called BASE-IT, our system helps US Marine instructors provide excellent training despite the challenging environment, hundreds of trainees and high trainee-to-instructor ratios, non-stop action, and diverse training objectives. To accomplish these objectives, BASE-IT widens the sensory input in multiple dimensions...

  1. Augmenting a guitar with its digital footprint

    OpenAIRE

    Benford, Steve; Hazzard, Adrian; Chamberlain, Alan; Xu, Liming

    2015-01-01

    We explore how to digitally augment musical instruments by connecting them to their social histories. We describe the use of Internet of Things technologies to connect an acoustic guitar to its digital footprint – a record of how it was designed, built and played. We introduce the approach of crafting interactive decorative inlay into the body of an instrument that can then be scanned using mobile devices to reveal its digital footprint. We describe the design and construction of an augmented...

  2. Augmented Reality Interfaces for Additive Manufacturing

    OpenAIRE

    Eiríksson, Eyþór Rúnar; Pedersen, David Bue; Frisvad, Jeppe Revall; Skovmand, Linda; Heun, Valentin; Maes, Pattie; Aanæs, Henrik

    2017-01-01

    This paper explores potential use cases for using augmented reality (AR) as a tool to operate industrial machines. As a baseline we use an additive manufacturing system, more commonly known as a 3D printer. We implement novel augmented interfaces and controls using readily available open source frameworks and low cost hardware. Our results show that the technology enables richer and more intuitive printer control and performance monitoring than currently available on the market. Therefore, th...

  3. Augmenting the Web through Open Hypermedia

    DEFF Research Database (Denmark)

    Bouvin, N.O.

    2003-01-01

    Based on an overview of Web augmentation and detailing the three basic approaches to extend the hypermedia functionality of the Web, the author presents a general open hypermedia framework (the Arakne framework) to augment the Web. The aim is to provide users with the ability to link, annotate......, and otherwise structure Web pages, as they see fit. The paper further discusses the possibilities of the concept through the description of various experiments performed with an implementation of the framework, the Arakne Environment...

  4. Thrust augmentation for a small turbojet engine

    OpenAIRE

    Hackaday, Gary L.

    1999-01-01

    Approved for public release; distribution is unlimited A Sophia J450 (nine pounds of thrust) gas turbine engine was used first to examine the thrust augmentation generated using an ejector shroud. Experimental results obtained with and without the ejector were compared with performance predicted using an engine code and a one-dimensional ejector analysis. The engine code was revised to incorporate a radial turbine and the correct compressor map. Thrust augmentation of 3-10% was measured an...

  5. Augmented Reality for Maintenance and Repair (ARMAR)

    Science.gov (United States)

    2007-08-01

    of tracking and display technologies, and computer graphics hardware and software, and has a long tradition of research in AR theory and practice ... practice , a user can learn to negotiate the nearby augmented controls while keeping their eyes focused on the repair area. Second, because the...2005, pp. 47-54. [8] A. C. Boud, D. J. Haniff, C. Baber , and S. J. Steiner, "Virtual Reality and Augmented Reality as a Training Tool for

  6. Augmented reality implementation methods in mainstream applications

    Directory of Open Access Journals (Sweden)

    David Procházka

    2011-01-01

    Full Text Available Augmented reality has became an useful tool in many areas from space exploration to military applications. Although used theoretical principles are well known for almost a decade, the augmented reality is almost exclusively used in high budget solutions with a special hardware. However, in last few years we could see rising popularity of many projects focused on deployment of the augmented reality on dif­ferent mobile devices. Our article is aimed on developers who consider development of an augmented reality application for the mainstream market. Such developers will be forced to keep the application price, therefore also the development price, at reasonable level. Usage of existing image processing software library could bring a significant cut-down of the development costs. In the theoretical part of the article is presented an overview of the augmented reality application structure. Further, an approach for selection appropriate library as well as the review of the existing software libraries focused in this area is described. The last part of the article out­lines our implementation of key parts of the augmented reality application using the OpenCV library.

  7. Augmentation techniques for rotator cuff repair.

    Science.gov (United States)

    Papalia, Rocco; Franceschi, Francesco; Zampogna, Biagio; D'Adamio, Stefano; Maffulli, Nicola; Denaro, Vincenzo

    2013-01-01

    There is a high rate of recurrence of tear and failed healing after rotator cuff repair. Several strategies have proposed to augment rotator cuff repairs to improve postoperative outcome and shoulder performance. We systematically review the literature on clinical outcome following rotator cuff augmentation. We performed a comprehensive search of Medline, CINAHL, Embase and the Cochrane Central Registry of Controlled Trials, from inception of the database to 20 June 2012, using various combinations of keywords. The reference lists of the previously selected articles were then examined by hand. Only studies focusing on clinical outcomes of human patients who had undergone augmented rotator cuff repair were selected. We then evaluated the methodological quality of each article using the Coleman methodology score (CMS), a 10 criteria scoring list assessing the methodological quality of the selected studies (CMS). Thirty-two articles were included in the present review. Two were retrospective studies, and 30 were prospective. Biologic, synthetic and cellular devices were used in 24, 7 and 1 studies, respectively. The mean modified Coleman methodology score was 64.0. Heterogeneity of the clinical outcome scores makes it difficult to compare different studies. None of the augmentation devices available is without problems, and each one presents intrinsic weaknesses. There is no dramatic increase in clinical and functional assessment after augmented procedures, especially if compared with control groups. More and better scientific evidence is necessary to use augmentation of rotator cuff repairs in routine clinical practice.

  8. Horizontal bone augmentation: the decision tree.

    Science.gov (United States)

    Fu, Jia-Hui; Wang, Hom-Lay

    2011-01-01

    The emergence of implant dentistry has led to the need for bone augmentation procedures. With the removal of a tooth, there is an inevitable three-dimensional (3D) loss of alveolar bone. More often than not, horizontal bone loss occurs at a faster rate and to a greater extent compared to vertical bone loss. This led to the development of several horizontal bone augmentation techniques, such as guided bone regeneration, ridge expansion, distraction osteogenesis, and block grafts. These proposed augmentation techniques aim to place the implant in an ideal 3D position for successful restorative therapy. The literature has shown that horizontal bone augmentation is fairly predictable if certain criteria are fulfilled. However, with numerous techniques and materials currently available, it is difficult to choose the most suitable treatment modality. A search of the literature available was conducted to validate the decision-making process when planning for a horizontal ridge augmentation procedure. The decision tree proposed in this paper stems from the 3D buccolingual bone width available at the site of implant placement (⋝ 3.5 mm, factors such as the tissue thickness, the arch position, and the availability of autogenous bone. The decision tree provides insight on how clinicians can choose the most appropriate and predictable horizontal ridge augmentation procedure to minimize unnecessary complications.

  9. Empirical evaluation of augmented prototyping effectiveness

    Directory of Open Access Journals (Sweden)

    Tomáš Koubek

    2012-01-01

    Full Text Available Augmented reality is a scientific field well known for more than twenty years. Although there is a huge number of projects that present promising results, the real usage of augmented reality applications for fulfilling common tasks is almost negligible. We believe that one of the principal reasons is insufficient usability of these applications. The situation is analogous to the desktop, mobile or cloud application development or even to the web pages design. The first phase of a technology adoption is the exploration of its potential. As soon as the technical problems are overcome and the technology is widely accepted, the usability is a principal issue. The usability is utmost important also from the business point of view. The cost of augmented reality implementation into the production process is substantial, therefore, the usability that is directly responsible for the implemented solution effectiveness must be appropriately tested. Consequently, the benefit of the implemented solution can be measured.This article briefly outlines common techniques used for usability evaluation. Discussed techniques were designed especially for evaluation of desktop applications, mobile solutions and web pages. In spite of this drawback, their application on augmented reality products is usually possible. Further, a review of existing augmented reality project evaluations is presented.Based on this review, a usability evaluation method for our augmented prototyping application is proposed. This method must overcome the fact that the design is a creative process. Therefore, it is not possible to take into account common criteria such as time consumption.

  10. Food Processing Antioxidants.

    Science.gov (United States)

    Hidalgo, F J; Zamora, R

    Food processing has been carried out since ancient times as a way to preserve and improve food nutritional and organoleptic properties. Although it has some undesirable consequences, such as the losses of some nutrients and the potential formation of toxic compounds, a wide range of benefits can be enumerated. Among them, the increased total antioxidant capacity of many processed foods has been known for long. This consequence has been related to both the release or increased availability of natural antioxidants and the de novo formation of substances with antioxidant properties as a consequence of the produced reactions. This review analyzes the chemical changes produced in foods during processing with special emphasis on the formation of antioxidants as a consequence of carbonyl-amine reactions produced by both carbohydrate- and lipid-derived reactive carbonyls. It discusses the lastest advances produced in the characterization of carbonyl-amine adducts and their potential action as primary (free radical scavengers), secondary (chelating and other ways to prevent lipid oxidation), and tertiary (carbonyl scavengers as a way to avoid lipid oxidation consequences) antioxidants. Moreover, the possibility of combining amino compounds with different hydrophobicity, such as aminophospholipids and proteins, with a wide array of reactive carbonyls points out to the use of carbonyl-amine reactions as a new way to induce the formation of a great variety of substances with antioxidant properties and very variable hydrophilia/lipophilia. All presented results point out to carbonyl-amine reactions as an effective method to generate efficacious antioxidants that can be used in food technology. © 2017 Elsevier Inc. All rights reserved.

  11. Augmenting digital displays with computation

    Science.gov (United States)

    Liu, Jing

    As we inevitably step deeper and deeper into a world connected via the Internet, more and more information will be exchanged digitally. Displays are the interface between digital information and each individual. Naturally, one fundamental goal of displays is to reproduce information as realistically as possible since humans still care a lot about what happens in the real world. Human eyes are the receiving end of such information exchange; therefore it is impossible to study displays without studying the human visual system. In fact, the design of displays is rather closely coupled with what human eyes are capable of perceiving. For example, we are less interested in building displays that emit light in the invisible spectrum. This dissertation explores how we can augment displays with computation, which takes both display hardware and the human visual system into consideration. Four novel projects on display technologies are included in this dissertation: First, we propose a software-based approach to driving multiview autostereoscopic displays. Our display algorithm can dynamically assign views to hardware display zones based on multiple observers' current head positions, substantially reducing crosstalk and stereo inversion. Second, we present a dense projector array that creates a seamless 3D viewing experience for multiple viewers. We smoothly interpolate the set of viewer heights and distances on a per-vertex basis across the arrays field of view, reducing image distortion, crosstalk, and artifacts from tracking errors. Third, we propose a method for high dynamic range display calibration that takes into account the variation of the chrominance error over luminance. We propose a data structure for enabling efficient representation and querying of the calibration function, which also allows user-guided balancing between memory consumption and the amount of computation. Fourth, we present user studies that demonstrate that the ˜ 60 Hz critical flicker fusion

  12. Antioxidant intake in paediatric oncology patients.

    Science.gov (United States)

    Slegtenhorst, Sonja; Visser, Janicke; Burke, Amos; Meyer, Rosan

    2015-12-01

    Antioxidant intake can affect both free radical and the nutritional status of children receiving cancer treatment. The aim of this study was to investigate whether children with cancer met their antioxidant requirements. A prospective observational study was performed at a single hospital in England from June 2008 to February 2010. Children with a solid tumour, lymphoma or leukaemia were included. Dietary intakes including 3 modes of feeding ('diet alone', 'diet + tube' feeding or 'diet + vitamin-mineral supplementation' (VMS)) were collected with an estimated food record (EFR) 1 and 3 month post-diagnosis. Four and 24-hr food recalls were performed to validate the food records. Forty two children were included: 57% leukaemia or lymphoma and 43% solid tumours. Sixty seven percent underwent chemotherapy and 33% a combination of therapies. In months 1 and 3, greater numbers of children achieved ≥100% of requirements for 'diet + VMS' (p cancer patients when feeding was not augmented in any way. More research is required to determine the clinical implications of these findings. Copyright © 2015 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.

  13. Skin and antioxidants.

    Science.gov (United States)

    Poljsak, Borut; Dahmane, Raja; Godic, Aleksandar

    2013-04-01

    It is estimated that total sun exposure occurs non-intentionally in three quarters of our lifetimes. Our skin is exposed to majority of UV radiation during outdoor activities, e.g. walking, practicing sports, running, hiking, etc. and not when we are intentionally exposed to the sun on the beach. We rarely use sunscreens during those activities, or at least not as much and as regular as we should and are commonly prone to acute and chronic sun damage of the skin. The only protection of our skin is endogenous (synthesis of melanin and enzymatic antioxidants) and exogenous (antioxidants, which we consume from the food, like vitamins A, C, E, etc.). UV-induced photoaging of the skin becomes clinically evident with age, when endogenous antioxidative mechanisms and repair processes are not effective any more and actinic damage to the skin prevails. At this point it would be reasonable to ingest additional antioxidants and/or to apply them on the skin in topical preparations. We review endogenous and exogenous skin protection with antioxidants.

  14. ARSC: Augmented Reality Student Card--An Augmented Reality Solution for the Education Field

    Science.gov (United States)

    El Sayed, Neven A. M.; Zayed, Hala H.; Sharawy, Mohamed I.

    2011-01-01

    Augmented Reality (AR) is the technology of adding virtual objects to real scenes through enabling the addition of missing information in real life. As the lack of resources is a problem that can be solved through AR, this paper presents and explains the usage of AR technology we introduce Augmented Reality Student Card (ARSC) as an application of…

  15. Augmented Reality for the Improvement of Remote Laboratories: An Augmented Remote Laboratory

    Science.gov (United States)

    Andujar, J. M.; Mejias, A.; Marquez, M. A.

    2011-01-01

    Augmented reality (AR) provides huge opportunities for online teaching in science and engineering, as these disciplines place emphasis on practical training and unsuited to completely nonclassroom training. This paper proposes a new concept in virtual and remote laboratories: the augmented remote laboratory (ARL). ARL is being tested in the first…

  16. Augmented “Ouch!”. : How to create intersubjective augmented objects into which we can bump

    NARCIS (Netherlands)

    Liberati, Nicola

    2015-01-01

    The aim of this work is to provide the elements to design an intersubjective augmented reality in order to make the augmented objects part of our everyday world. This work will analyse intersubjectivity from a phenomenological point of view using the works by Husserl and Schutz. Thanks to these two

  17. Augmented reality and ubiquitous computing : The hidden potentialities of augmented reality

    NARCIS (Netherlands)

    Liberati, Nicola

    2016-01-01

    The aim of this paper was to highlight the augmented reality’s potentialities, depicting its main characteristics and focusing attention on what its goal should be in order to have a new technology completely different from those that already exist. From a technological point of view, augmented

  18. Antioxidants and vascular health.

    Science.gov (United States)

    Bielli, Alessandra; Scioli, Maria Giovanna; Mazzaglia, Donatella; Doldo, Elena; Orlandi, Augusto

    2015-12-15

    Oxygen free radicals and other reactive oxygen species (ROS) are common products of normal aerobic cellular metabolism, but high levels of ROS lead to oxidative stress and cellular damage. Increased production of ROS favors vascular dysfunction, inducing altered vascular permeability and inflammation, accompanied by the loss of vascular modulatory function, the imbalance between vasorelaxation and vasoconstriction, and the aberrant expression of inflammatory adhesion molecules. Inflammatory stimuli promote oxidative stress generated from the increased activity of mitochondrial nicotinamide adenine dinucleotide phosphate oxidase, particularly of the Nox4 isoform, with the consequent impairment of mitochondrial β-oxidation. Vascular dysfunction due to the increase in Nox4 activity and ROS overproduction leads to the progression of cardiovascular diseases, diabetes, inflammatory bowel disease, and neurological disorders. Considerable research into the development of effective antioxidant therapies using natural derivatives or new synthetic molecules has been conducted. Antioxidants may prevent cellular damage by reducing ROS overproduction or interfering in reactions that involve ROS. Vitamin E and ascorbic acid are well known as natural antioxidants that counteract lipid peroxidative damage by scavenging oxygen-derived free radicals, thus restoring vascular function. Recently, preliminary studies on natural antioxidants such as goji berries, thymus, rosemary, green tea ginseng, and garlic have been conducted for their efficacy in preventing vascular damage. N-acetyl-cysteine and propionyl-L-carnitine are synthetic compounds that regulate ROS production by replacing endogenous antioxidants in both endothelial and smooth muscle cells. In this review, we consider the molecular mechanisms underlying the generation of oxidative stress-induced vascular dysfunction as well as the beneficial effects of antioxidant therapies.

  19. Antioxidant properties of HDL

    Directory of Open Access Journals (Sweden)

    Handrean eSoran

    2015-10-01

    Full Text Available High-density lipoprotein (HDL provides a pathway for the passage of lipid peroxides and lysophospholipids to the liver via hepatic scavenger receptors. Perhaps more importantly, HDL actually metabolises lipid hydroperoxides preventing their accumulation on low-density lipoprotein (LDL, thus impeding its atherogenic structural modification. A number of candidates have been suggested to be responsible for HDL’s antioxidant function, with paraoxonase-1 (PON1 perhaps the most prominent. Here we review the evidence for HDL anti-oxidative function and the potential contributions of apolipoproteins, lipid transfer proteins, paraoxonases and other enzymes associated with HDL.

  20. ANTIOXIDANT POTENCY OF WATER KEFIR

    OpenAIRE

    Muneer Alsayadi M.S.; Yaser Al Jawfi; Meriem Belarbi; Fatima Z. Sabri

    2013-01-01

    Reactive oxygen species (ROS) have strong relationship with several diseases. Many fermented foods were reported to be important sources for antioxidant compounds. Antioxidant activity of water kefir never reported in the scientific literature. The objective of this study was to detect and investigate the antioxidant potency of water kefir. Water kefir was prepared by fermentation of sugar solution with kefir grains for 24h. Antioxidant activity of fresh water kefir drink and its extract with...

  1. Supplementation with α-lipoic acid, CoQ10, and vitamin E augments running performance and mitochondrial function in female mice.

    Directory of Open Access Journals (Sweden)

    Arkan Abadi

    Full Text Available Antioxidant supplements are widely consumed by the general public; however, their effects of on exercise performance are controversial. The aim of this study was to examine the effects of an antioxidant cocktail (α-lipoic acid, vitamin E and coenzyme Q10 on exercise performance, muscle function and training adaptations in mice. C57Bl/J6 mice were placed on antioxidant supplement or placebo-control diets (n = 36/group and divided into trained (8 wks treadmill running (n = 12/group and untrained groups (n = 24/group. Antioxidant supplementation had no effect on the running performance of trained mice nor did it affect training adaptations; however, untrained female mice that received antioxidants performed significantly better than placebo-control mice (p ≤ 0.05. Furthermore, antioxidant-supplemented females (untrained showed elevated respiratory capacity in freshly excised muscle fibers (quadriceps femoris (p ≤ 0.05, reduced oxidative damage to muscle proteins (p ≤ 0.05, and increased expression of mitochondrial proteins (p ≤ 0.05 compared to placebo-controls. These changes were attributed to increased expression of proliferator-activated receptor gamma coactivator 1α (PGC-1α (p ≤ 0.05 via activation of AMP-activated protein kinase (AMPK (p ≤ 0.05 by antioxidant supplementation. Overall, these results indicate that this antioxidant supplement exerts gender specific effects; augmenting performance and mitochondrial function in untrained females, but does not attenuate training adaptations.

  2. Antioxidants for female subfertility.

    Science.gov (United States)

    Showell, Marian G; Mackenzie-Proctor, Rebecca; Jordan, Vanessa; Hart, Roger J

    2017-07-28

    A couple may be considered to have fertility problems if they have been trying to conceive for over a year with no success. This may affect up to a quarter of all couples planning a child. It is estimated that for 40% to 50% of couples, subfertility may result from factors affecting women. Antioxidants are thought to reduce the oxidative stress brought on by these conditions. Currently, limited evidence suggests that antioxidants improve fertility, and trials have explored this area with varied results. This review assesses the evidence for the effectiveness of different antioxidants in female subfertility. To determine whether supplementary oral antioxidants compared with placebo, no treatment/standard treatment or another antioxidant improve fertility outcomes for subfertile women. We searched the following databases (from their inception to September 2016) with no language or date restriction: Cochrane Gynaecology and Fertility Group (CGFG) specialised register, the Cochrane Central Register of Studies (CENTRAL CRSO), MEDLINE, Embase, PsycINFO, CINAHL and AMED. We checked reference lists of appropriate studies and searched for ongoing trials in the clinical trials registers. We included randomised controlled trials (RCTs) that compared any type, dose or combination of oral antioxidant supplement with placebo, no treatment or treatment with another antioxidant, among women attending a reproductive clinic. We excluded trials comparing antioxidants with fertility drugs alone and trials that only included fertile women attending a fertility clinic because of male partner infertility. Two review authors independently selected eligible studies, extracted the data and assessed the risk of bias of the included studies. The primary review outcome was live birth; secondary outcomes included clinical pregnancy rates and adverse events. We pooled studies using a fixed-effect model, and calculated odds ratios (ORs) with 95% confidence intervals (CIs) for the dichotomous

  3. Handling Occlusions for Robust Augmented Reality Systems

    Directory of Open Access Journals (Sweden)

    Madjid Maidi

    2010-01-01

    Full Text Available In Augmented Reality applications, the human perception is enhanced with computer-generated graphics. These graphics must be exactly registered to real objects in the scene and this requires an effective Augmented Reality system to track the user's viewpoint. In this paper, a robust tracking algorithm based on coded fiducials is presented. Square targets are identified and pose parameters are computed using a hybrid approach based on a direct method combined with the Kalman filter. An important factor for providing a robust Augmented Reality system is the correct handling of targets occlusions by real scene elements. To overcome tracking failure due to occlusions, we extend our method using an optical flow approach to track visible points and maintain virtual graphics overlaying when targets are not identified. Our proposed real-time algorithm is tested with different camera viewpoints under various image conditions and shows to be accurate and robust.

  4. Formwork application optimization by using augmented reality

    Science.gov (United States)

    Diaconu, R.; Petruse, R.; Brindasu, P. D.

    2016-11-01

    By using the PLM (Product Lifecycle Management) principle on the formwork case study, after determining the functions and the technical solutions, the application must be made as optimum as possible in order to assure productivity and provide the necessary information as quick as possible. The concept is to create a complex management for the formwork based on augmented reality. By taking into account the development rate of the information, augmented reality is tending to be one of the widest (in term of domain) visualization instrument. Also used in the construction domain, augmented reality can be applied also for the case of formwork design and management. The application of the solution will be retrieved in the construction of the product, its transportation and deposit. The usage of this concept will help reduce, even eliminate human or technical errors and can offer a precise state of a specific required formwork from the stock.

  5. Therapeutics: Alpha-1 Antitrypsin Augmentation Therapy.

    Science.gov (United States)

    Campos, Michael; Lascano, Jorge

    2017-01-01

    Subjects with alpha-1 antitrypsin deficiency who develop pulmonary disease are managed following general treatment guidelines, including disease management interventions. In addition, administration of intravenous infusions of alpha-1 proteinase inhibitor (augmentation therapy) at regular schedules is a specific therapy for individuals with AATD with pulmonary involvement.This chapter summarizes the manufacturing differences of commercially available formulations and the available evidence of the effects of augmentation therapy. Biologically, there is clear evidence of in vivo local antiprotease effects in the lung and systemic immunomodulatory effects. Clinically, there is cumulative evidence of slowing lung function decline and emphysema progression. The optimal dose of augmentation therapy is being revised as well as more individualized assessment of who needs this therapy.

  6. Handling Occlusions for Robust Augmented Reality Systems

    Directory of Open Access Journals (Sweden)

    Maidi Madjid

    2010-01-01

    Full Text Available Abstract In Augmented Reality applications, the human perception is enhanced with computer-generated graphics. These graphics must be exactly registered to real objects in the scene and this requires an effective Augmented Reality system to track the user's viewpoint. In this paper, a robust tracking algorithm based on coded fiducials is presented. Square targets are identified and pose parameters are computed using a hybrid approach based on a direct method combined with the Kalman filter. An important factor for providing a robust Augmented Reality system is the correct handling of targets occlusions by real scene elements. To overcome tracking failure due to occlusions, we extend our method using an optical flow approach to track visible points and maintain virtual graphics overlaying when targets are not identified. Our proposed real-time algorithm is tested with different camera viewpoints under various image conditions and shows to be accurate and robust.

  7. Pemanfaatan Augmented Reality Pada Permainan Othello

    Directory of Open Access Journals (Sweden)

    Rendy Layman Aguston

    2016-11-01

    Full Text Available Perkembangan teknologi telah mengubah cara pengerjaan suatu pekerjaan dari cara konvensional menjadi cara yang lebih praktis. Dengan hadirnya teknologi Augmented Reality, cara bermain yang menggunakan pion dan membalikkan pion musuh secara manual menjadi lebih mudah dalam memainkan permainan selain juga dapat berinteraksi langsung. Pembuatan permainan Othello menggunakan program Unity dengan framework Vuforia untuk mewujudkan Augmented Reality pada permainan Othello. Untuk menerapkan Augmented Reality dengan baik, dibutuhkan papan permainan sebagai image target yang sesuai dengan kriteria, jenis kamera yang digunakan, jarak kamera terhadap papan permainan, intensitas cahaya yang ditangkap kamera, serta tingkat sensitivitas tombol virtual. Pada permainan Othello ini tersedia fitur komputer yang menggunakan algoritma Alpha Beta Pruning dengan 3 level kedalaman yang menggunakan perhitungan fungsi evaluasi berupa mobility, potential mobility dan penguasaan corner yang menghasilkan kemenangan mencapai 73,33% dari 15 kali uji coba terhadap aplikasi Othello serupa dan 78,34% dari 37 kali uji coba terhadap user.

  8. Augmented reality-assisted skull base surgery.

    Science.gov (United States)

    Cabrilo, I; Sarrafzadeh, A; Bijlenga, P; Landis, B N; Schaller, K

    2014-12-01

    Neuronavigation is widely considered as a valuable tool during skull base surgery. Advances in neuronavigation technology, with the integration of augmented reality, present advantages over traditional point-based neuronavigation. However, this development has not yet made its way into routine surgical practice, possibly due to a lack of acquaintance with these systems. In this report, we illustrate the usefulness and easy application of augmented reality-based neuronavigation through a case example of a patient with a clivus chordoma. We also demonstrate how augmented reality can help throughout all phases of a skull base procedure, from the verification of neuronavigation accuracy to intraoperative image-guidance. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  9. Cognitive Cost of Using Augmented Reality Displays.

    Science.gov (United States)

    Baumeister, James; Ssin, Seung Youb; ElSayed, Neven A M; Dorrian, Jillian; Webb, David P; Walsh, James A; Simon, Timothy M; Irlitti, Andrew; Smith, Ross T; Kohler, Mark; Thomas, Bruce H

    2017-11-01

    This paper presents the results of two cognitive load studies comparing three augmented reality display technologies: spatial augmented reality, the optical see-through Microsoft HoloLens, and the video see-through Samsung Gear VR. In particular, the two experiments focused on isolating the cognitive load cost of receiving instructions for a button-pressing procedural task. The studies employed a self-assessment cognitive load methodology, as well as an additional dual-task cognitive load methodology. The results showed that spatial augmented reality led to increased performance and reduced cognitive load. Additionally, it was discovered that a limited field of view can introduce increased cognitive load requirements. The findings suggest that some of the inherent restrictions of head-mounted displays materialize as increased user cognitive load.

  10. Resonance frequency analysis of implant stability in augmented and non-augmented sinus sites

    Directory of Open Access Journals (Sweden)

    Amir Moeintaghavi

    2015-12-01

    Full Text Available Background and aim:  Although there have been substantial developments in dental implant therapies, achieving good implant stability (ISQ >60 for implants inserted in augmented sinus sites appears to be challenging in comparison with non-augmented sites due to the high prevalence of bone resorption in posterior regions of maxilla. This study aimed to evaluate and compare the time required to achieve good implant stability between implants inserted in sites that had undergone a sinus augmentation procedure with implants inserted in non-augmented similar regions of maxilla. Methods: Thirty Stroman ITI Dental Implants were inserted in 14 patients (8 females and 6 males with average age of 55 ± 10 years. Fourteen implants were inserted in sinus augmented sites (open sinus elevation and Demineralized Freezed Bone Allograft  or DFDBA 6 months after healing (test group, and 16 implants were inserted into non-augmented  posterior areas of maxilla (control group. The implant stability quotient (ISQ for each implant was measured at the time of insertion (baseline, ISQ0 and at 1, 2 and 3 months later (ISQ1, ISQ2, ISQ3. Residual and augmented bone heights were also recorded. Results: The average residual bone height was 2.92 ± 0.63mm and 10.41 ± 1.46mm for the augmented bone height. The difference between ISQ values in the test and control groups was only significant at the baseline (p=0.023. No significant correlation was found between ISQ and bone height (residual and augmented, and there was no significant correlation between ISQ values and the implant diameter and length. In the test group, the differences between ISQ0 and ISQ1, ISQ1 and ISQ3 and ISQ2 and ISQ3 were all statistically significant (p=0.006, p=0.032, p=0.046. In the control group, the difference was only significant between ISQ0 and ISQ1 (p=0.002. Conclusion:  ISQ values were not statistically significant between implants inserted in natural and augmented bone six months after sinus

  11. Resonance frequency analysis of implant stability in augmented and non-augmented sinus sites

    Directory of Open Access Journals (Sweden)

    Amir Moeintaghavi

    2016-03-01

    Full Text Available Background and aim:  Although there have been substantial developments in dental implant therapies, achieving good implant stability (ISQ >60 for implants inserted in augmented sinus sites appears to be challenging in comparison with non-augmented sites due to the high prevalence of bone resorption in posterior regions of maxilla. This study aimed to evaluate and compare the time required to achieve good implant stability between implants inserted in sites that had undergone a sinus augmentation procedure with implants inserted in non-augmented similar regions of maxilla. Methods: Thirty Stroman ITI Dental Implants were inserted in 14 patients (8 females and 6 males with average age of 55 ± 10 years. Fourteen implants were inserted in sinus augmented sites (open sinus elevation and Demineralized Freezed Bone Allograft  or DFDBA 6 months after healing (test group, and 16 implants were inserted into non-augmented  posterior areas of maxilla (control group. The implant stability quotient (ISQ for each implant was measured at the time of insertion (baseline, ISQ0 and at 1, 2 and 3 months later (ISQ1, ISQ2, ISQ3. Residual and augmented bone heights were also recorded. Results: The average residual bone height was 2.92 ± 0.63mm and 10.41 ± 1.46mm for the augmented bone height. The difference between ISQ values in the test and control groups was only significant at the baseline (p=0.023. No significant correlation was found between ISQ and bone height (residual and augmented, and there was no significant correlation between ISQ values and the implant diameter and length. In the test group, the differences between ISQ0 and ISQ1, ISQ1 and ISQ3 and ISQ2 and ISQ3 were all statistically significant (p=0.006, p=0.032, p=0.046. In the control group, the difference was only significant between ISQ0 and ISQ1 (p=0.002. Conclusion:  ISQ values were not statistically significant between implants inserted in natural and augmented bone six months after sinus

  12. Gluteal Augmentation Techniques: A Comprehensive Literature Review.

    Science.gov (United States)

    Oranges, Carlo M; Tremp, Mathias; di Summa, Pietro G; Haug, Martin; Kalbermatten, Daniel F; Harder, Yves; Schaefer, Dirk J

    2017-05-01

    Many studies of gluteal augmentation techniques have been published in recent decades, including case reports, retrospective and prospective case series, and multicenter survey reviews. However, to date, there has been no study of the overall complications or satisfaction rates associated with the broad spectrum of techniques. The authors performed a comprehensive literature review to determine outcomes and complications of gluteoplasty techniques, including patient satisfaction. A search on PubMed/Medline was performed for clinical studies involving gluteal augmentation techniques. A priori criteria were used to review the resulting articles. Fifty-two studies, published from 1969 through 2015, were included - representing 7834 treated patients. Five gluteal augmentation techniques were identified from these studies: gluteal augmentation with implants (n = 4781), autologous fat grafting (n = 2609), local flaps (n = 369), hyaluronic acid gel injection (n = 69), and local tissue rearrangement (n = 6). The overall complication rates of the most commonly utilized techniques were: 30.5% for gluteal augmentation with implants, 10.5% for autologous fat grafting, and 22% for local flaps. Patients' satisfaction was reported as consistently high for all the five techniques. Implant-based gluteal augmentation is associated with high patients' satisfaction despite a high complication rate, while autologous fat grafting is associated with the lowest complication rate yet including serious major complications such as fat embolism. Local flaps and local tissue rearrangements are the ideal procedures in case of massive weight loss patients. A paucity of data is available for hyaluronic acid gel injections, which appear to be effective but temporary and expensive.

  13. Guidelines for designing augmented reality games

    OpenAIRE

    Wetzel, Richard; McCall, Rod; Braun, Anne-Kathrin; Broll, Wolfgang

    2008-01-01

    The growing popularity of augmented reality (AR) games in both a research and more recently commercial context has led for a need to take a closer look at design related issues which impact on player experience. While issues relating to this area have been considered, to date most of the emphasis has been on the technology aspects. Furthermore it is almost always assumed that the augmented reality element in itself will provide a sufficient experience for the player. This has led to a need to...

  14. Mechanical Ventilation Antioxidant Trial.

    Science.gov (United States)

    Howe, Kimberly P; Clochesy, John M; Goldstein, Lawrence S; Owen, Hugh

    2015-09-01

    Many patients each year require prolonged mechanical ventilation. Inflammatory processes may prevent successful weaning, and evidence indicates that mechanical ventilation induces oxidative stress in the diaphragm, resulting in atrophy and contractile dysfunction of diaphragmatic myofibers. Antioxidant supplementation might mitigate the harmful effects of the oxidative stress induced by mechanical ventilation. To test the clinical effectiveness of antioxidant supplementation in reducing the duration of mechanical ventilation. A randomized, prospective, placebo-controlled double-blind design was used to test whether enterally administered antioxidant supplementation would decrease the duration of mechanical ventilation, all-cause mortality, and length of stay in the intensive care unit and hospital. Patients received vitamin C 1000 mg plus vitamin E 1000 IU, vitamin C 1000 mg plus vitamin E 1000 IU plus N-acetylcysteine 400 mg, or placebo solution as a bolus injection via their enteral feeding tube every 8 hours. Clinical and statistically significant differences in duration of mechanical ventilation were seen among the 3 groups (Mantel-Cox log rank statistic = 5.69, df = 1, P = .017). The 3 groups did not differ significantly in all-cause mortality during hospitalization or in the length of stay in the intensive care unit or hospital. Enteral administration of antioxidants is a simple, safe, inexpensive, and effective intervention that decreases the duration of mechanical ventilation in critically ill adults. ©2015 American Association of Critical-Care Nurses.

  15. Antioxidant effects of carotenoids

    NARCIS (Netherlands)

    Bast, A.; Haenen, G.R.M.M.; Berg, R. van den; Berg, H. van den

    1998-01-01

    Surprisingly, neither the precise pharmacological effect nor the toxicological profile is usually established for food components. Carotenoids are no exception in this regard. Only limited insight into the pharmacology and toxicology of carotenoids exists. It is known that the antioxidant action of

  16. Pycnogenol, French maritime pine bark extract, augments endothelium-dependent vasodilation in humans.

    Science.gov (United States)

    Nishioka, Kenji; Hidaka, Takayuki; Nakamura, Shuji; Umemura, Takashi; Jitsuiki, Daisuke; Soga, Junko; Goto, Chikara; Chayama, Kazuaki; Yoshizumi, Masao; Higashi, Yukihito

    2007-09-01

    Pycnogenol, an extract of bark from the French maritime pine, Pinus pinaster Ait., consists of a concentrate of water-soluble polyphenols. Pycnogenol contains the bioflavonoids catechin and taxifolin as well as phenolcarbonic acids. Antioxidants, such as bioflavonoids, enhance endothelial nitric oxide (NO) synthase expression and subsequent NO release from endothelial cells. The purpose of this study was to determine Pycnogenol's effects on endothelium-dependent vasodilation in humans. This was a double-blind, randomized, placebo and active drug study. We evaluated forearm blood flow (FBF) responses to acetylcholine (ACh), an endothelium-dependent vasodilator, and to sodium nitroprusside (SNP), an endothelium-independent vasodilator, in healthy young men before and after 2 weeks of daily oral administration of Pycnogenol (180 mg/day) (n=8) or placebo (n=8). FBF was measured by using strain-gauge plethysmography. Neither the placebo nor Pycnogenol altered forearm or systemic hemodynamics. Pycnogenol, but not placebo, augmented FBF response to ACh, from 13.1 +/- 7.0 to 18.5 +/- 4.0 mL/min per 100 mL tissue (pPycnogenol groups. The administration of N(G)-monomethyl-L-arginine, an NO synthase inhibitor, completely abolished Pycnogenol-induced augmentation of the FBF response to ACh. These findings suggest that Pycnogenol augments endothelium-dependent vasodilation by increasing in NO production. Pycnogenol would be useful for treating various diseases whose pathogeneses involve endothelial dysfunction.

  17. Understanding the Conics through Augmented Reality

    Science.gov (United States)

    Salinas, Patricia; Pulido, Ricardo

    2017-01-01

    This paper discusses the production of a digital environment to foster the learning of conics through augmented reality. The name conic refers to curves obtained by the intersection of a plane with a right circular conical surface. The environment gives students the opportunity to interact with the cone and the plane as virtual objects in real…

  18. Get Real: Augmented Reality for the Classroom

    Science.gov (United States)

    Mitchell, Rebecca; DeBay, Dennis

    2012-01-01

    Kids love augmented reality (AR) simulations because they are like real-life video games. AR simulations allow students to learn content while collaborating face to face and interacting with a multimedia-enhanced version of the world around them. Although the technology may seem advanced, AR software makes it easy to develop content-based…

  19. Augmentation ureterocystoplasty: is it the preferred choice ...

    African Journals Online (AJOL)

    Objective: To evaluate our experience with ureterocystoplasty as to whether it is the preferred method for bladder augmentation to achieve continence and preserve the upper urinary tract. Design: Retrospective study. Setting: Paediatric urology unit, Dana Children\\'s hospital, Tel Aviv Medical Center (affiliated to the Sackler ...

  20. Augmentation ureterocystoplasty: is it the preferred choice ...

    African Journals Online (AJOL)

    The urinary bladder in all patients is spherical with good capacity and no vesicoureteral reflux was demonstrated. The upper urinary tracts are stable and the renal function tests are normal. Conclusion: Ureterocystoplasty is our preferred choice of bladder augmentation in patients with small, inelastic, poor compliant bladder ...

  1. Augmented Lagrangian Method For Discretized Optimal Control ...

    African Journals Online (AJOL)

    With the aid of Augmented Lagrangian method, a quadratic function with a control operator (penalized matrix) amenable to conjugate gradient method is generated. Numerical experiments verify the efficiency of the proposed technique which compares much more favourably to the existing scheme. Keywords: Trapezoidal ...

  2. Toward natural fiducials for augmented reality

    Science.gov (United States)

    Kitchin, Paul; Martinez, Kirk

    2005-03-01

    Augmented Reality (AR) requires a mapping between the camera(s) and the world, so that virtual objects can be correctly registered. Current AR applications either use pre-prepared fiducial markers or specialist equipment or impose significant constraints on lighting and background. Each of these approaches has significant drawbacks. Fiducial markers are susceptible to loss or damage, can be awkward to work with and may require significant effort to prepare an area for Augmented interaction. Use of such markers may also present an imposition to non-augmented observers, especially in environments such as museums or historical landmarks. Specialist equipment is expensive and not universally available. Lighting and background constraints are often impractical for real-world applications. This paper presents initial results in using the palm of the hand as a pseudo-fiducial marker in a natural real-world environment, through colour, feature and edge analysis. The eventual aim of this research is to enable fiducial marker cards to be dispensed with entirely in some situations in order to allow more natural interaction in Augmented environments. Examples of this would be allowing users to "hold" virtual 3D objects in the palm of their hand or use gestures to interact with virtual objects.

  3. Aplikasi Museum Zoologi Berbasis Augmented Reality

    OpenAIRE

    Gonydjaja, Rosny; Mayongga, Yongki

    2014-01-01

    Museum Zoologi adalah museum yang terletak di kota Bogor, yang memilikikoleksi yang berkaitan dengan dunia satwa dari berbagai spesimen yangdiawetkan maupun fosil hewan. Pada awal pembangunannya tahun 1894,tempat ini berfungsi sebagai laboratorium zoologi yang menjadi wadahpenelitian yang berkaitan dengan pertanian dan zoologi, meliputi kegiataninventarisasi fauna Indonesia dengan nama Landbouw ZoologischLaboratorium. Augmented reality (AR) adalah sebuah lingkungan yangmenggabungkan dunia nya...

  4. (Re-)Examination of Multimodal Augmented Reality

    NARCIS (Netherlands)

    Rosa, N.E.; Werkhoven, P.J.; Hürst, W.O.

    2016-01-01

    The majority of augmented reality (AR) research has been concerned with visual perception, however the move towards multimodality is imminent. At the same time, there is no clear vision of what multimodal AR is. The purpose of this position paper is to consider possible ways of examining AR other

  5. Augmented Reality in Sports: Today and Tomorrow

    Directory of Open Access Journals (Sweden)

    Zafer BOZYER

    2015-08-01

    Full Text Available The rapid change experienced in the field of Information Technologies makes the informati cs more tangible in daily life. Today, it became possible to encounter with the informatics applications almost all the disciplines. As a matter of course, many informatics applications are put into the practice regarding the sports discipline. Because of the condition that the power of information processing has increased and the studies on wearable technol ogies in addition to the expert system design, augmented reality (AR has become a topic which gains imp ortance in the field of sports. There are many studies that are conducted with the aim of increasing the efficiency of physical activities done in many sports branches, ensuring a more fair management of competitions and providing the opportunity for spectators to watch the competitions in a more comfortable and efficient way. In this study; the information about the current augmented reality practices th at are used in various sports branches has been given and the mobile and interactive augmented reality practices which are possible to be seen in future have been mentioned. In addition, there is an augmented reality practice which is designed with the aim of ensuring that the shoots of sports people who are interested in archery, are more stable and of ensuring that the trainings and exercises are more efficient by stating to the sports people whether he or she is in the right position for shoot which is c alled as T shape seen at the time of releasing the arrow.

  6. Some augmentation quotients of integral group rings

    Indian Academy of Sciences (India)

    M. Senthilkumar (Newgen Imaging) 1461 1996 Oct 15 13:05:22

    Some augmentation quotients of integral group rings. DEEPAK KUMAR GUMBER1, RAM KARAN2 and INDU PAL2. 1School of Mathematics and Computer Applications, Thapar University,. Patiala 147 004, India. 2Department of Mathematics, Kurukshetra University, Kurukshetra 136 119, India. E-mail: dkgumber@yahoo.

  7. Augmentation of board games using smartphones

    DEFF Research Database (Denmark)

    Kulsinskas, Arturas; Balan, Catalin; Egede Bukdahl, Nicholas

    2015-01-01

    This paper contains details about research into the effect of digital augmentation on social presence in board games. A case study of the board game Tobago was performed during the project and a prototype application for smartphones was developed in order to compare the players’ social presence...

  8. Determination of Student Opinions in Augmented Reality

    Science.gov (United States)

    Bicen, Huseyin; Bal, Erkan

    2016-01-01

    The rapid development of the new technology has changed classroom teaching methods and tools in a positive way. This study investigated the classroom learning with augmented reality and the impact of student opinions. 97 volunteer undergraduate students took part in this study. Results included data in the form of frequencies, percentages and…

  9. CARE: Creating Augmented Reality in Education

    Science.gov (United States)

    Latif, Farzana

    2012-01-01

    This paper explores how Augmented Reality using mobile phones can enhance teaching and learning in education. It specifically examines its application in two cases, where it is identified that the agility of mobile devices and the ability to overlay context specific resources offers opportunities to enhance learning that would not otherwise exist.…

  10. Location-Based Learning through Augmented Reality

    Science.gov (United States)

    Chou, Te-Lien; Chanlin, Lih-Juan

    2014-01-01

    A context-aware and mixed-reality exploring tool cannot only effectively provide an information-rich environment to users, but also allows them to quickly utilize useful resources and enhance environment awareness. This study integrates Augmented Reality (AR) technology into smartphones to create a stimulating learning experience at a university…

  11. Design Principles for Augmented Reality Learning

    Science.gov (United States)

    Dunleavy, Matt

    2014-01-01

    Augmented reality is an emerging technology that utilizes mobile, context-aware devices (e.g., smartphones, tablets) that enable participants to interact with digital information embedded within the physical environment. This overview of design principles focuses on specific strategies that instructional designers can use to develop AR learning…

  12. The Educational Possibilities of Augmented Reality

    Science.gov (United States)

    Cabero, Julio; Barroso, Julio

    2016-01-01

    A large number of emergent technologies have been acquiring a strong impulse in recent years. One of these emergent technologies is Augmented Reality (RA), which will surely have a high level of penetration into all our educational centers, including universities, in the next 3 to 5 years, as a number of different reports have already highlighted.…

  13. Temporal Coherence Strategies for Augmented Reality Labeling

    DEFF Research Database (Denmark)

    Madsen, Jacob Boesen; Tatzgern, Markus; Madsen, Claus B.

    2016-01-01

    Temporal coherence of annotations is an important factor in augmented reality user interfaces and for information visualization. In this paper, we empirically evaluate four different techniques for annotation. Based on these findings, we follow up with subjective evaluations in a second experiment...

  14. Intelligent Augmented Reality Training for Motherboard Assembly

    Science.gov (United States)

    Westerfield, Giles; Mitrovic, Antonija; Billinghurst, Mark

    2015-01-01

    We investigate the combination of Augmented Reality (AR) with Intelligent Tutoring Systems (ITS) to assist with training for manual assembly tasks. Our approach combines AR graphics with adaptive guidance from the ITS to provide a more effective learning experience. We have developed a modular software framework for intelligent AR training…

  15. Design Patterns for Augmented Reality Learning Games

    NARCIS (Netherlands)

    Emmerich, Felix; Klemke, Roland; Hummes, Thomas

    2017-01-01

    Augmented Reality (AR) is expected to receive a major uptake with the recent availability of high quality wearable AR devices such as Microsoft’s Hololens. However, the design of interaction with AR applications and games is still a field of experimentation and upcoming innovations in

  16. Design Patterns for Augmented Reality Learning Games

    NARCIS (Netherlands)

    Emmerich, Felix; Klemke, Roland; Hummes, Thomas

    2017-01-01

    Augmented Reality (AR) is expected to receive a major uptake with the recent availability of high quality wearable AR devices such as Microsoft’s Hololens. However, the design of interaction with AR applications and games is still a field of experimentation and upcoming innovations in sensor

  17. Accurate overlaying for mobile augmented reality

    NARCIS (Netherlands)

    Pasman, W; van der Schaaf, A; Lagendijk, RL; Jansen, F.W.

    1999-01-01

    Mobile augmented reality requires accurate alignment of virtual information with objects visible in the real world. We describe a system for mobile communications to be developed to meet these strict alignment criteria using a combination of computer vision. inertial tracking and low-latency

  18. Aloqa and layar augmented reality feeds

    NARCIS (Netherlands)

    Ternier, Stefaan

    2010-01-01

    Aloqa is a service that proactively notifies the user of Point Of Interests (POIs). It runs on iPhone, blackberry and android. With this tool you can easily get directions to events, places, buildings or other places of interests. Layar builds on the same principle, but has a browser that augments

  19. Personalized augmented reality for anatomy education.

    Science.gov (United States)

    Ma, Meng; Fallavollita, Pascal; Seelbach, Ina; Von Der Heide, Anna Maria; Euler, Ekkehard; Waschke, Jens; Navab, Nassir

    2016-05-01

    Anatomy education is a challenging but vital element in forming future medical professionals. In this work, a personalized and interactive augmented reality system is developed to facilitate education. This system behaves as a "magic mirror" which allows personalized in-situ visualization of anatomy on the user's body. Real-time volume visualization of a CT dataset creates the illusion that the user can look inside their body. The system comprises a RGB-D sensor as a real-time tracking device to detect the user moving in front of a display. In addition, the magic mirror system shows text information, medical images, and 3D models of organs that the user can interact with. Through the participation of 7 clinicians and 72 students, two user studies were designed to respectively assess the precision and acceptability of the magic mirror system for education. The results of the first study demonstrated that the average precision of the augmented reality overlay on the user body was 0.96 cm, while the results of the second study indicate 86.1% approval for the educational value of the magic mirror, and 91.7% approval for the augmented reality capability of displaying organs in three dimensions. The usefulness of this unique type of personalized augmented reality technology has been demonstrated in this paper. © 2015 Wiley Periodicals, Inc.

  20. Augmented reality for Android application development

    CERN Document Server

    Grubert, Jens

    2013-01-01

    A step-by-step tutorial-based guide aimed at giving you hands-on practical experience to develop AR applications for Android.Augmented Reality for Android Application Development is for Android mobile application developers who are familiar with Android Development Tools and deployment, JMonkeyEngine, and the Vuforia SDK.

  1. Augmenting the ADDIE Paradigm for Instructional Design

    Science.gov (United States)

    Ni, Xiaopeng; Branch, Robert Maribe

    2008-01-01

    The authors discuss topics appropriate for augmenting the ADDIE paradigm for instructional design. The topics selected are based on data from a study of working professionals who successfully completed an instructional design and technology certificate program and who identified related topics that they regarded as beneficial. The participants…

  2. E-Learning: Between Augmentation and Disruption?

    Science.gov (United States)

    Heilesen, Simon B.; Josephsen, Jens

    2008-01-01

    Based on a framework for analysis combining diffusion theory, content layer analysis and sense making, this paper discusses the theme of "e-learning as augmentation or disruption" from the point of view of technological innovation. Two cases of on-campus blended learning at Roskilde University, Denmark, are introduced to illustrate the…

  3. Global Navigation Satellite System and Augmentation

    Indian Academy of Sciences (India)

    Global Navigation Satellite System and Augmentation. K C T Swamy. Dr. K C T Swamy is an. Associate Professor in ECE at. G Pullaih College of. Engineering and Technology,. Kurnool, Andhra Pradesh. His research interests are global navigation satellite system and antennas. He has been carrying out research in.

  4. Motion in Augmented Reality Games: An Engine for Creating Plausible Physical Interactions in Augmented Reality Games

    OpenAIRE

    Brian Mac Namee; David Beaney; Qingqing Dong

    2010-01-01

    The next generation of Augmented Reality (AR) games will require real and virtual objects to coexist in motion in immersive game environments. This will require the illusion that real and virtual objects interact physically together in a plausible way. The Motion in Augmented Reality Games (MARG) engine described in this paper has been developed to allow these kinds of game environments. The paper describes the design and implementation of the MARG engine and presents two proof-of-concept AR ...

  5. The role of imaging in pediatric bladder augmentation

    Energy Technology Data Exchange (ETDEWEB)

    Breen, Micheal; Chow, Jeanne S. [Boston Children' s Hospital, Department of Radiology, Boston, MA (United States); Phelps, Andrew [UCSF Benioff Children' s Hospital San Francisco, Department of Radiology and Biomedical Imaging, San Francisco, CA (United States); Estrada, Carlos [Boston Children' s Hospital, Department of Urology, Boston, MA (United States)

    2015-09-15

    Bladder augmentation (also called augmentation cystoplasty) refers to a number of surgical methods that increase the capacity and compliance of the urinary bladder. Imaging has an important role in the postoperative evaluation of bladder augmentation. The most common augmentation procedures utilize enteric segments to augment the bladder. The various types of bladder augmentation have characteristic appearances on different imaging modalities. Spontaneous bladder perforation is a complication that is seen in both early and late post-operative periods and it is one of the most important complications for radiologists to be aware of as it is life-threatening. We review the indications for bladder augmentation in children, the surgical techniques employed, the normal postoperative appearances on imaging studies and the role of imaging complications of bladder augmentation including delayed spontaneous bladder rupture, which is life-threatening. (orig.)

  6. Health Promotion by Antioxidants

    Directory of Open Access Journals (Sweden)

    Hoyoku Nishino

    2011-12-01

    Full Text Available ABSTRACT:Background: Various antioxidnats from daily foods are expected to prevent lifestyle-related diseases. For example, natural carotenoid beta-cryptoxanthin seems to be a promising antioxidant, and based upon epidemiological data it was shown to be a possible cancer preventing agent. For this reason, we chose to study beta-cryptoxanthin more extensively.Methods and Results: From the result of clinical trial using beta-cryptoxanthin-enriched Mandarin orange juice, it was proven to potentiate the preventive activity of multi-carotenoid mixture against liver cancer in the patients with chronic viral hepatitis-induced liver cirrhosis. Furthermore, beta-cryptoxanthin also has preventive activity against alcohol-induced gamma-GTP elevation, and obesity.Conclusion: An antioxidant beta -cryptoxanthin seems to be valuable for health promotion.

  7. "Lycopene: A Promising Antioxidant"

    Directory of Open Access Journals (Sweden)

    Anshumalee Nisheeth

    2007-01-01

    Full Text Available Lycopene is a red colored fat soluble carotenoid, which gives tomatoes and several other fruits their deep red colour. It has shown potential role in prevention and cure of various systemic and oral diseases including malignancies due to its antioxidant and other cancer preventing properties. Lycopene with its 11 conjugated and 2 non conjugated double bonds is the most efficient singIet oxygen quencher and is considered most potent antioxidant among carotenoids. It has shown to be efficient in the management of oral cancer and precancer like leukoplakia and has shown the potential in the management of other oral mucosal lesions thought to arise due to free radical onslaught such as oral lichen planes.

  8. Antioxidant System in Dermatology

    Directory of Open Access Journals (Sweden)

    Şemsettin Karaca

    2009-06-01

    Full Text Available In healthy body, oxygen species and antioxidant defence mechanisms work in balance. Overproduction or inadequate removal of reactive oxygen species result in oxidative stress, leading to lipid peroxidation, DNA mutation or breakage, activation or inactivation of enzymes, protein oxidation. Clinically, these cause several unfavorable effects included erythema, edema, wrinkles, photoaging, inflammation, autoimmune reactions, hipersensitivity reactions, keratinization disorders, neoplastic or preneoplastic lesions. Although reactive oxygen species play a role in various skin diseases, their biological targets and pathogenic mode of action are still not fully understood. In addition, strategies in the therapeutic management of reactive oxygen species effects in are still lacking. The aim of this review is to give information to readers about reactive oxygen species, antioxidants and skin disorders influenced by reactive oxygen species.

  9. Projector augmented wave method: ab initio molecular dynamics ...

    Indian Academy of Sciences (India)

    Unknown

    Abstract. A brief introduction to the projector augmented wave method is given and recent developments are reviewed. The projector augmented wave method is an all-electron method for efficient ab initio molecular dynamics simulations with full wave functions. It extends and combines the traditions of existing augmented.

  10. Initial Model of Social Acceptability for Human Augmentation Technologies

    NARCIS (Netherlands)

    Eghtebas, Chloe; Pay, Yun Suen; Väänänen, Kaisa; Pfeiffer, Ties; Meyer, Joachim; Lukosch, S.G.

    2017-01-01

    Academia and industry engage in major efforts to develop technologies for augmenting human senses and activities. Many of these technologies, such as augmented reality (AR) and virtual reality (VR) head mounted displays (HMD), haptic augmentation systems, and exoskeletons can be applied in numerous

  11. Current concepts on complications associated with sinus augmentation procedures

    NARCIS (Netherlands)

    Boffano, P.; Forouzanfar, T.

    2014-01-01

    The sinus augmentation, or sinus lift procedure, is an internal augmentation of the maxillary sinus, which is intended to increase the vertical bony dimension in the lateral maxilla to make the placement of dental implants possible. Complication rate associated with maxillary sinus augmentation

  12. Current Concepts on Complications Associated With Sinus Augmentation Procedures

    NARCIS (Netherlands)

    Boffano, P.; Forouzanfar, T.

    2014-01-01

    The sinus augmentation, or sinus lift procedure, is an internal augmentation of the maxillary sinus, which is intended to increase the vertical bony dimension in the lateral maxilla to make the placement of dental implants possible. Complication rate associated with maxillary sinus augmentation

  13. Perancangan Augmented Reality untuk Peta Topografi

    Directory of Open Access Journals (Sweden)

    Agustinna Yosanny

    2013-12-01

    Full Text Available Topography is the science about the earth's surface and other objects such as planets, satellites, and asteroids. Topography is studied at school and is found quite difficult to understand because it requires imagination to understand the meaning of contour maps as well as the lines. To motivate students in learning topography,we design an learning application of interactive topographic map with 3D features using Augmented reality technology. In this research we implement analysis and design method. The result achieved is a learning topographic map application based on augmented reality. The conclusion that can be drawn is the teaching and learning of topography can be more interesting with 3D features so that students can more easily recognize the meaning of contour lines in a topographic map.

  14. Camera Based Navigation System with Augmented Reality

    Directory of Open Access Journals (Sweden)

    M. Marcu

    2012-06-01

    Full Text Available Nowadays smart mobile devices have enough processing power, memory, storage and always connected wireless communication bandwidth that makes them available for any type of application. Augmented reality (AR proposes a new type of applications that tries to enhance the real world by superimposing or combining virtual objects or computer generated information with it. In this paper we present a camera based navigation system with augmented reality integration. The proposed system aims to the following: the user points the camera of the smartphone towards a point of interest, like a building or any other place, and the application searches for relevant information about that specific place and superimposes the data over the video feed on the display. When the user moves the camera away, changing its orientation, the data changes as well, in real-time, with the proper information about the place that is now in the camera view.

  15. Interactive learning environments in augmented reality technology

    Directory of Open Access Journals (Sweden)

    Rafał Wojciechowski

    2010-01-01

    Full Text Available In this paper, the problem of creation of learning environments based on augmented reality (AR is considered. The concept of AR is presented as a tool for safe and cheap experimental learning. In AR learning environments students may acquire knowledge by personally carrying out experiments on virtual objects by manipulating real objects located in real environments. In the paper, a new approach to creation of interactive educational scenarios, called Augmented Reality Interactive Scenario Modeling (ARISM, is mentioned. In this approach, the process of building learning environments is divided into three stages, each of them performed by users with different technical and domain knowledge. The ARISM approach enables teachers who are not computer science experts to create AR learning environments adapted to the needs of their students.

  16. The effects of augmented reality on learning.

    Science.gov (United States)

    Hsiao, Kuei-Fang

    2010-01-01

    In this study, a new approach to the implementation of Augmented Reality (AR) in the educational environment was taken by creating a Chemistry Augmented Reality Learning System (CARLS), using the existing teaching curriculum, together with physical activity. This system combined learning with three types of physical activity: aerobic fitness, muscle strength and flexibility fitness. This study reveals that the students using all three types of physical activity together with CARLS result in significantly higher academic performance compared to the traditional Keyboard-Mouse CAI (KMCAI). This improvement is most evident for the non-memorized knowledge component of Science. Moreover, the students in the AR group with 'muscle strength' physical activity had significantly more positive learning attitude change toward Science than those in the KMCAI group. A great additional benefit of our approach is that, students also obtained more physical fitness while learning.

  17. Viscoelastic-augmented trabeculectomy: A newer concept

    Directory of Open Access Journals (Sweden)

    Meghna Solanki

    2017-01-01

    Full Text Available Purpose: Comparison of conventional trabeculectomy (CT and viscoelastic-augmented trabeculectomy (VAT in primary open-angle glaucoma. Methods: A total of 65 primary open-angle glaucoma cases were taken for each of the two groups, i.e., CT and VAT. Viscoelastic-augmented trabeculectomy constituted lamellar scleral flap, deep scleral flap, penetrating trabeculectomy, peripheral iridectomy, filling of the anterior chamber with viscoelastic (sodium hyaluronate and balanced salt solution, movement of visco in bleb, and tight flap closure. Success criteria included intraocular pressure (IOP <14 mmHg with no devastating complications. P < 0.05 was considered statistically significant. Results: Mean IOP was significantly lower after VAT compared to CT at 6 weeks, 12 weeks, and 6 months postoperatively. Target IOP was achieved in 60% cases in VAT group compared to 36.92% in CT group. Conclusion: VAT is effective in reducing IOP to the target level for advanced glaucoma with lower postoperative complications.

  18. Survey on Urban Warfare Augmented Reality

    Directory of Open Access Journals (Sweden)

    Xiong You

    2018-01-01

    Full Text Available Urban warfare has become one of the main forms of modern combat in the twenty-first century. The main reason why urban warfare results in hundreds of casualties is that the situational information of the combatant is insufficient. Accessing information via an Augmented Reality system can elevate combatants’ situational awareness to effectively improve the efficiency of decision-making and reduce the injuries. This paper begins with the concept of Urban Warfare Augmented Reality (UWAR and illuminates the objectives of developing UWAR, i.e., transparent battlefield, intuitional perception and natural interaction. Real-time outdoor registration, information presentation and natural interaction are presented as key technologies of a practical UWAR system. Then, the history and current research state of these technologies are summarized and their future developments are highlighted from three perspectives, i.e., (1 Better integration with Geographic Information System and Virtual Geographic Environment; (2 More intelligent software; (3 More powerful hardware.

  19. Augmented Interactive Scores for Music Creation

    OpenAIRE

    Fober, Dominique; Orlarey, Yann; Letz, Stéphane

    2014-01-01

    International audience; This article addresses music representation issues in the context of the contemporary music creation and performance. It exposes the main challenges in terms of music notation and representation, in regard of the new forms of music and with an emphasis on interactive music issues. It presents INScore, an environment for the design of augmented, interactive music scores that has been developed in response to current artistic evolutions. It gives an overview of the syste...

  20. (Re-)Examination of Multimodal Augmented Reality

    OpenAIRE

    Rosa, N.E.; Werkhoven, P.J.; Hürst, W.O.

    2016-01-01

    The majority of augmented reality (AR) research has been concerned with visual perception, however the move towards multimodality is imminent. At the same time, there is no clear vision of what multimodal AR is. The purpose of this position paper is to consider possible ways of examining AR other than using popular notions and definitions, in order to come to an understanding of multimodal AR. Three concepts are introduced. First, the commonly used terms 'real' and 'virtual' are redefined in ...

  1. CIRSE Guidelines on Percutaneous Vertebral Augmentation

    Energy Technology Data Exchange (ETDEWEB)

    Tsoumakidou, Georgia, E-mail: gtsoumakidou@yahoo.com; Too, Chow Wei, E-mail: spyder55@gmail.com; Koch, Guillaume, E-mail: guillaume.koch@gmail.com; Caudrelier, Jean, E-mail: jean.caudrelier@chru-strasbourg.fr; Cazzato, Roberto Luigi, E-mail: gigicazzato@hotmail.it; Garnon, Julien, E-mail: juliengarnon@gmail.com; Gangi, Afshin, E-mail: gangi@unistra.fr [Strasbourg University Hospital, Interventional Radiology Department (France)

    2017-03-15

    Vertebral compression fracture (VCF) is an important cause of severe debilitating back pain, adversely affecting quality of life, physical function, psychosocial performance, mental health and survival. Different vertebral augmentation procedures (VAPs) are used in order to consolidate the VCFs, relief pain,and whenever posible achieve vertebral body height restoration. In the present review we give the indications, contraindications, safety profile and outcomes of the existing percutaneous VAPs.

  2. Augmented REality Sandtables (ARESs) Impact on Learning

    Science.gov (United States)

    2016-07-01

    knowledge and spatial-reasoning skills over traditional maps (e.g., paper map and digitized 2-D displays) by providing multimodal and multisensory learning...SUBJECT TERMS ARES, augmented reality, sand table, map reading , terrain, visualization, topography 16. SECURITY CLASSIFICATION OF: 17. LIMITATION...2.6 Procedure 5 3. Results and Discussion 6 3.1 Data Reduction and Analysis 6 3.1.1 Outlier Analysis 8 3.1.2 Normality Testing 8 3.1.3 Sphericity

  3. Multiple Kernel Learning with Data Augmentation

    Science.gov (United States)

    2016-11-22

    Intelligence and Artificial Neural Networks Symposium (TAINN 96. Citeseer, 1996. Erling D Andersen and Knud D Andersen. The mosek interior point optimizer...Zien, and Sören Sonnen- burg. Efficient and accurate lp-norm multiple kernel learning . In Advances in neural information processing systems, pages 997...JMLR: Workshop and Conference Proceedings 63:49–64, 2016 ACML 2016 Multiple Kernel Learning with Data Augmentation Khanh Nguyen nkhanh@deakin.edu.au

  4. Augmentation Mammaplasty Using Implants: A Review

    Directory of Open Access Journals (Sweden)

    Susumu Takayanagi

    2012-09-01

    Full Text Available One of the techniques for augmentation mammaplasty is the procedure using implants. Eventhough this technique has been used for many years, there are still several controversial issuesto be discussed and overcome for patient safety. In this review article, capsular contracture,leak or rupture of the implants, possible systemic disease, relation with breast cancer, andrecent problems with Poly Implant Prothese implants are described and discussed.

  5. nARratives of augmented worlds

    OpenAIRE

    Shilkrot, Roy; Montfort, Nick; Maes, Patricia

    2014-01-01

    This paper presents an examination of augmented reality (AR) as a rising form of interactive narrative that combines computer-generated elements with reality, fictional with non-fictional objects, in the same immersive experience. Based on contemporary theory in narratology, we propose to view this blending of reality worlds as a metalepsis, a transgression of reality and fiction boundaries, and argue that authors could benefit from using existing conventions of narration to emphasize the tra...

  6. Augmented reality visualization for thoracoscopic spine surgery

    Science.gov (United States)

    Sauer, Frank; Vogt, Sebastian; Khamene, Ali; Heining, Sandro; Euler, Ekkehard; Schneberger, Marc; Zuerl, Konrad; Mutschler, Wolf

    2006-03-01

    We are developing an augmented reality (AR) image guidance system in which information derived from medical images is overlaid onto a video view of the patient. The centerpiece of the system is a head-mounted display custom fitted with two miniature color video cameras that capture the stereo view of the scene. Medical graphics is overlaid onto the video view and appears firmly anchored in the scene, without perceivable time lag or jitter. We have been testing the system for different clinical applications. In this paper we discuss minimally invasive thoracoscopic spine surgery as a promising new orthopedic application. In the standard approach, the thoracoscope - a rigid endoscope - provides visual feedback for the minimally invasive procedure of removing a damaged disc and fusing the two neighboring vertebrae. The navigation challenges are twofold. From a global perspective, the correct vertebrae on the spine have to be located with the inserted instruments. From a local perspective, the actual spine procedure has to be performed precisely. Visual feedback from the thoracoscope provides only limited support for both of these tasks. In the augmented reality approach, we give the surgeon additional anatomical context for the navigation. Before the surgery, we derive a model of the patient's anatomy from a CT scan, and during surgery we track the location of the surgical instruments in relation to patient and model. With this information, we can help the surgeon in both the global and local navigation, providing a global map and 3D information beyond the local 2D view of the thoracoscope. Augmented reality visualization is a particularly intuitive method of displaying this information to the surgeon. To adapt our augmented reality system to this application, we had to add an external optical tracking system, which works now in combination with our head-mounted tracking camera. The surgeon's feedback to the initial phantom experiments is very positive.

  7. Augmented Reality to Training Spatial Skills

    OpenAIRE

    Martín-Gutiérrez, Jorge; Contero, Manuel; Alcañiz, Mariano

    2015-01-01

    La Laguna University has been offering courses for the development of spatial skills since 2004. Each year since that time spatial ability of engineering students has been measured before and after the courses to check progress after each training session. We have developed a spatial skills training course based on augmented reality and graphic engineering contents, and designed the AR_Dehaes tool, which is based on its own library the uses computer vision techniques for incorporating vis...

  8. Index matrices towards an augmented matrix calculus

    CERN Document Server

    Atanassov, Krassimir T

    2014-01-01

    This book presents the very concept of an index matrix and its related augmented matrix calculus in a comprehensive form. It mostly illustrates the exposition with examples related to the generalized nets and intuitionistic fuzzy sets which are examples of an extremely wide array of possible application areas. The present book contains the basic results of the author over index matrices and some of its open problems with the aim to stimulating more researchers to start working in this area.

  9. Augmented reality for non-rigid surfaces

    OpenAIRE

    Pilet, Julien

    2008-01-01

    Augmented Reality (AR) is the process of integrating virtual elements in reality, often by mixing computer graphics into a live video stream of a real scene. It requires registration of the target object with respect to the cameras. To this end, some approaches rely on dedicated hardware, such as magnetic trackers or infra-red cameras, but they are too expensive and cumbersome to reach a large public. Others are based on specifically designed markers which usually look like bar-codes. However...

  10. Comparative efficacy and acceptability of seven augmentation ...

    African Journals Online (AJOL)

    The results revealed that T3 was more efficacious than lithium, TCAs, AAPs, AEDs, buspirone and CBT with odds ratios (ORs) of 1.58, 1.56, 1.51, 1.47, 1.77 and 1.25, respectively. ORs favoured CBT compared with lithium, TCAs, AAPs, AEDs and buspirone. Buspirone was the least efficacious of all the other augmentation ...

  11. Conical polyurethane implants: an uplifting augmentation.

    Science.gov (United States)

    Georgeu, Garrick A; Frame, James D; Frame, James D

    2013-11-01

    Polyurethane-coated conical implants were introduced by Silimed (US distributor: Sientra, Santa Barbara, California) in 2008 and offer an alternative to round or anatomically shaped implants. By their design and volume distribution, they naturally create central volume and give a reasonable fullness to the upper pole while lifting some ptotic breasts, thus avoiding the need for classical mastopexy. The authors discuss the advantages of conical implants as an alternative to conventional silicone implants for women with breast ptosis. In the 2-year period between December 2010 and December 2012, a consecutive series of 302 women underwent implant-based breast surgery procedures (236 primary augmentations, 59 revisions, and 7 mastopexy-augmentations) with conical polyurethane devices. Implant volumes ranged from 225 to 560 cc, with low- to medium-profile devices predominating. No extra-high-profile implants were used. Only 1 patient had a drain inserted on completion of a revision augmentation. There were no infections (0%) and no wound dehiscence (0%). Four cases required reoperation (1.3%). Patient satisfaction scores were universally high (average, 9.94/10). There have been no capsular contractures to date, but follow-up is short. The modern conical, polyurethane implant has many advantages over the conventional round or anatomically shaped implants and offers patients an ideal compromise between volume, natural upper pole fullness, and a lift without mastopexy scars.

  12. Labor Augmentation with Oxytocin Decreases Glutathione Level

    Directory of Open Access Journals (Sweden)

    Naomi Schneid-Kofman

    2009-01-01

    Full Text Available Objective. To compare oxidative stress following spontaneous vaginal delivery with that induced by Oxytocin augmented delivery. Methods. 98 women recruited prior to labor. 57 delivered spontaneously, while 41 received Oxytocin for augmentation of labor. Complicated deliveries and high-risk pregnancies were excluded. Informed consent was documented. Arterial cord blood gases, levels of Hematocrit, Hemoglobin, and Bilirubin were studied. Glutathione (GSH concentration was measured by a spectroscopic method. Plasma and red blood cell (RBC levels of Malondialdehyde indicated lipid peroxidation. RBC uptake of phenol red denoted cell penetrability. SPSS data analysis was used. Results. Cord blood GSH was significantly lower in the Oxytocin group (2.3±0.55 mM versus 2.55±0.55 mM, =.01. No differences were found in plasma or RBC levels of MDA or in uptake of Phenol red between the groups. Conclusion. Lower GSH levels following Oxytocin augmentation indicate an oxidative stress, though selected measures of oxidative stress demonstrate no cell damage.

  13. Augmented spaces, a look beyond advertising

    Directory of Open Access Journals (Sweden)

    Oana Andreea Căplescu

    2014-03-01

    Full Text Available From billboards to urban screens and now to media facades, the augmentation of our cities has expanded, changing social behaviours and public space consumption. Smart buildings are being developed and, much like the smartphones, these hybrids are not only in sci-fi movies anymore. One of the main promoters of media facades and media architecture has been the advertising industry. But artists and designers showed the potential of different approaches, experimenting with digitally augmented spaces both indoors and outdoors. Going beyond the commercial aspect of being an advertising and branding tool, these hybrids offer a variety of uses. Questions of how and where we use them and how they can improve our life quality are discussed here emphasizing that we developed a media behaviour, adjusting our relation to the physical and information environments. I examine some of the most notable experiments outside of the advertising sphere, offering a base for future development of augmented spaces and opening the discussion over the language of new media architecture.

  14. A Mobile Augmented Reality Emulator for Android

    Directory of Open Access Journals (Sweden)

    Donald Munro

    2017-07-01

    Full Text Available Augmented Reality (AR provides a fusion of the real and virtual worlds by superimposing virtual objects on real world scenery. The implementation of AR on mobile devices is known as Mobile Augmented Reality (MAR. MAR is in its infancy and MAR development software is in the process of maturing. Dating back to the origin of Computer Science as an independent field, software development tools have been an integral part of the process of software creation. MAR, being a relatively new technology, is still lacking such related software development tools. With the rapid progression of mobile devices, the development of MAR applications fusing advanced Computer Vision techniques with mobile device sensors have become increasingly feasible. However, testing and debugging of MAR applications present a new challenge in that they require the developer be at the location that is being augmented at some point during the development process. In this research study, a MAR recorder application was developed as well as emulation class libraries for Android devices that allows the recording and off-site playback of video, location and motion sensor data. The research objective was to provide a software emulator which provides debugging, testing and prototyping capabilities for a MAR application including the ability to emulate the combination of computer vision with locational and motion sensors using previously recorded data. The emulator was evaluated using different mobile technologies. The results indicate that this research could assist developers of MAR applications to implement applications more rapidly, without being at the location.

  15. Adaptive information design for outdoor augmented reality.

    Science.gov (United States)

    Neuhöfer, Jan A; Govaers, Felix; El Mokni, Hichem; Alexander, Thomas

    2012-01-01

    Augmented Reality focuses on the enrichment of the user's natural field of view by consistent integration of text, symbols and interactive three-dimensional objects in real time. Placing virtual objects directly into the user's view in a natural context empowers highly dynamic applications. On the other hand, this necessitates deliberate choice of information design and density, in particular for deployment in hazardous environments like military combat scenarios. As the amount of information needed is not foreseeable and strongly depends on the individual mission, an appropriate system must offer adequate adaptation capabilities. The paper presents a prototypical, vehicle-mountable Augmented Reality vision system, designed for enhancing situation awareness in stressful urban warfare scenarios. Tracking, as one of the most crucial challenges for outdoor Augmented Reality, is accomplished by means of a Differential-GPS approach while the type of display to attach can be modified, ranging from ocular displays to standard LCD mini-screens. The overall concept also includes envisioning of own troops (blue forces), for which a multi-sensor tracking approach has been chosen. As a main feature, the system allows switching between different information categories, focusing on friendly, hostile, unidentified or neutral data. Results of an empirical study on the superiority of an in-view navigation cue approach conclude the paper.

  16. In vitro antioxidant studies in leaves of Annona species.

    Science.gov (United States)

    Baskar, R; Rajeswari, V; Kumar, T Sathish

    2007-05-01

    Antioxidant potential of leaves of three different species of Annona was studied by using different in vitro models eg., 1,1-diphenyl-2-picryl hydrazyl (DPPH), 2,2-azinobis-(3-ethylbenzothizoline-6-sulphonate) (ABTS), nitric oxide, superoxide, hydroxy radical and lipid peroxidation. The ethanolic extract of A. muricata at 500 microg/ml showed maximum scavenging activity (90.05%) of ABTS radical cation followed by the scavenging of hydroxyl radical (85.88%) and nitric oxide (72.60%) at the same concentration. However, the extract showed only moderate lipid peroxidation inhibition activity. In contrast, the extract of A. reticulata showed better activity in quenching DPPH (89.37%) and superoxide radical (80.88%) respectively. A.squamosa extract exhibited least inhibition in all in vitro antioxidant models excepting hydroxyl radical (79.79%). These findings suggest that the extracts of A. muricata possess potent in vitro antioxidant activity as compared to leaves of A. squamosa and A. reticulata suggesting its role as an effective free radical scavenger, augmenting its therapeutic

  17. [THE POSSIBILITY OF APPLICATION OF COLORIMETRY TECHNIQUE OF DETECTION OF LEVELS OF OXIDATIVE STRESS AND ANTIOXIDANT CAPACITY OF SERUM].

    Science.gov (United States)

    Sapojnikova, M A; Strakhova, L A; Blinova, T V; Makarov, I A; Rakhmanov, R S; Umniagina, I A

    2015-11-01

    The analysis was implemented concerning indicators of oxidative status and antioxidant capacity of serum. The indicators were received by colorimetry technique based on detection of peroxides in blood serum in examined patients of different categories: healthy persons aged from 17 to 20 years and from 30 to 60 years and patients with bronchopulmonary pathology. The low level of oxidative stress and high antioxidant capacity of serum were established in individuals ofyounger age. With increasing of age, degree of expression of oxidative stress augmented and level of antioxidant defense lowered. Almost all patients with bronchopulmonary pathology had high level of oxidative stress and low level of antioxidant defense. The analysis of quantitative data of examined indicators their conformity with health condition was established

  18. Antioxidants and the Comet assay.

    Science.gov (United States)

    Cemeli, Eduardo; Baumgartner, Adolf; Anderson, Diana

    2009-01-01

    It is widely accepted that antioxidants, either endogenous or from the diet, play a key role in preserving health. They are able to quench radical species generated in situations of oxidative stress, either triggered by pathologies or xenobiotics, and they protect the integrity of DNA from genotoxicants. Nevertheless, there are still many compounds with unclear or unidentified prooxidant/antioxidant activities. This is of concern since there is an increase in the number of compounds synthesized or extracted from vegetables to which humans might be exposed. Despite the well-established protective effects of fruit and vegetables, the antioxidant(s) responsible have not all been clearly identified. There might also be alternative mechanisms contributing to the protective effects for which a comprehensive description is lacking. In the last two decades, the Comet assay has been extensively used for the investigation of the effects of antioxidants and many reports can be found in the literature. The Comet assay, a relatively fast, simple, and sensitive technique for the analysis of DNA damage in all cell types, has been applied for the screening of chemicals, biomonitoring and intervention studies. In the present review, several of the most well-known antioxidants are considered. These include: catalase, superoxide dismutase, glutathione peroxidase, selenium, iron chelators, melatonin, melanin, vitamins (A, B, C and E), carotenes, flavonoids, isoflavones, tea polyphenols, wine polyphenols and synthetic antioxidants. Investigations showing beneficial as well as non-beneficial properties of the antioxidants selected, either at the in vitro, ex vivo or in vivo level are discussed.

  19. Antioxidant supplements for liver diseases

    DEFF Research Database (Denmark)

    Bjelakovic, Goran; Gluud, Lise Lotte; Nikolova, Dimitrinka

    2011-01-01

    Several liver diseases have been associated with oxidative stress. Accordingly, antioxidants have been suggested as potential therapeutics for various liver diseases. The evidence supporting these suggestions is equivocal.......Several liver diseases have been associated with oxidative stress. Accordingly, antioxidants have been suggested as potential therapeutics for various liver diseases. The evidence supporting these suggestions is equivocal....

  20. Girth augmentation of the penis using flaps "Shaeer's augmentation phalloplasty": the superficial circumflex iliac flap.

    Science.gov (United States)

    Shaeer, Osama

    2014-07-01

    Penile girth augmentation can be achieved by various techniques, among which are liposuction injection, synthetic grafts, and autologous grafts, with variable outcome, mostly related to viability and receptivity of the tissue used for augmentation. Flaps are considered superior to grafts considering their uninterrupted blood supply. The current work describes long-term experience with penile girth augmentation using the superficial circumflex iliac artery and vein (SCIAV) flap. SCIAV flap was used for penile girth augmentation in 40 candidates who followed up for a minimum of 18 months. The flap was mobilized from the groin region. The penis was pulled out of a peno-pubic incision. The flap was tunneled under the pubic region to emerge at the base of the penis and was sutured to the subcoronal area and on either sides of the spongiosum. Another session was required for either de-bulking of the oversized flap (four overweight candidates), flap pedicle (n = 6), or for donor site scar revision (n = 11). Gain in girth in centimeters was evaluated. Excluding dropouts (n = 8) and participants who had encountered de-bulking of the flap body (n = 4), 40 participants had a preoperative average flaccid girth (AFG) of 9.3 ± 1.1 cm. Immediately postoperative AFG was 14.9 ± 1.1 cm (P < 0.001). Postoperative AFG at the final follow-up visit (a minimum of 18 months) was 14.5 ± 1.1 cm (55.6% gain compared with baseline, P < 0.001). SCIAV flap is a reliable option for long-lasting and sizable penile girth augmentation. One-stage augmentation is more suited for non-obese candidates. A second session may be indicated in overweight candidates or for scar revision. © 2014 International Society for Sexual Medicine.

  1. COPD: balancing oxidants and antioxidants

    Science.gov (United States)

    Fischer, Bernard M; Voynow, Judith A; Ghio, Andrew J

    2015-01-01

    Chronic obstructive pulmonary disease (COPD) is one of the most common chronic illnesses in the world. The disease encompasses emphysema, chronic bronchitis, and small airway obstruction and can be caused by environmental exposures, primarily cigarette smoking. Since only a small subset of smokers develop COPD, it is believed that host factors interact with the environment to increase the propensity to develop disease. The major pathogenic factors causing disease include infection and inflammation, protease and antiprotease imbalance, and oxidative stress overwhelming antioxidant defenses. In this review, we will discuss the major environmental and host sources for oxidative stress; discuss how oxidative stress regulates chronic bronchitis; review the latest information on genetic predisposition to COPD, specifically focusing on oxidant/antioxidant imbalance; and review future antioxidant therapeutic options for COPD. The complexity of COPD will necessitate a multi-target therapeutic approach. It is likely that antioxidant supplementation and dietary antioxidants will have a place in these future combination therapies. PMID:25673984

  2. Antioxidant relevance to human health.

    Science.gov (United States)

    Wahlqvist, Mark L

    2013-01-01

    Human ecology requires both oxygen and water with the generation from food of an immediate energy source, ATP, by oxidative phosphorylation. A continuing balance between oxidation and antioxidation is necessary for longer less-disabled lives, taking account of oxidative stresses and the critical roles of oxidants in defence against infection, tissue repair and signalling. Antioxidant capacity is derived both exogenously (from food, beverage and sunlight) and endogenously (from enzymatic and non-enzymatic pathways). A number of oxidant food factors service antioxidant metallo-enzymes. The capacity operates extra- or intracellularly. Uric acid is the major antioxidant in primate blood. Uric acid synthesis is increased by dietary fructose from fruit, sugary foods and drinks. This indirect antioxidant effect of fruit is separate from that attributable to its flavonoids. Alcohol also increases serum uric acid. Urate excess and retention is associated with disease. The high prevalence of hyperuricaemia in NE Asia presents a major public health dilemma in regard to putative benefits and risks. Foods with high antioxidant activity include berries, nuts and legumes, tomatoes and sweet potato leaves. Each of the antioxidants in these foods is pleiotropic being inter-alia anti-inflammatory, anti-angiogenic or anti-neoplastic. Moreover, food matrices and patterns contribute to the safety of antioxidant consumption. There is no evidence to date that isolated antioxidants as food supplements improve health outcomes or survival; and some that indicate unacceptable risk. Their use as biomarkers of food cannot justify their isolated use. Nevertheless, a spectrum of dietary pluripotential antioxidants for tissues, metabolic and immune systems is advantageous.

  3. Repeated vertebral augmentation for new vertebral compression fractures of postvertebral augmentation patients: a nationwide cohort study

    Directory of Open Access Journals (Sweden)

    Liang CL

    2015-03-01

    Full Text Available Cheng-Loong Liang,1 Hao-Kwan Wang,1 Fei-Kai Syu,2 Kuo-Wei Wang,1 Kang Lu,1 Po-Chou Liliang1 1Department of Neurosurgery, E-Da Hospital, I-Shou University, Kaohsiung City, Taiwan; 2Department of Pharmacy, China Medical University Hospital, Taichung City, Taiwan Purpose: Postvertebral augmentation vertebral compression fractures are common; repeated vertebral augmentation is usually performed for prompt pain relief. This study aimed to evaluate the incidence and risk factors of repeat vertebral augmentation.Methods: We performed a retrospective, nationwide, population-based longitudinal observation study, using the National Health Insurance Research Database (NHIRD of Taiwan. All patients who received vertebral augmentation for vertebral compression fractures were evaluated. The collected data included patient characteristics (demographics, comorbidities, and medication exposure and repeat vertebral augmentation. Kaplan–Meier and stratified Cox proportional hazard regressions were performed for analyses.Results: The overall incidence of repeat vertebral augmentation was 11.3% during the follow-up until 2010. Patients with the following characteristics were at greater risk for repeat vertebral augmentation: female sex (AOR=1.24; 95% confidence interval [CI]: 1.10–2.36, advanced age (AOR=1.60; 95% CI: 1.32–2.08, diabetes mellitus (AOR=4.31; 95% CI: 4.05–5.88, cerebrovascular disease (AOR=4.09; 95% CI: 3.44–5.76, dementia (AOR=1.97; 95% CI: 1.69–2.33, blindness or low vision (AOR=3.72; 95% CI: 2.32–3.95, hypertension (AOR=2.58; 95% CI: 2.35–3.47, and hyperlipidemia (AOR=2.09; 95% CI: 1.67–2.22. Patients taking calcium/ vitamin D (AOR=2.98; 95% CI: 1.83–3.93, bisphosphonates (AOR=2.11; 95% CI: 1.26–2.61, or calcitonin (AOR=4.59; 95% CI: 3.40–5.77 were less likely to undergo repeat vertebral augmentation; however, those taking steroids (AOR=7.28; 95% CI: 6.32–8.08, acetaminophen (AOR=3.54; 95% CI: 2.75–4.83, or nonsteroidal

  4. Complications of Fat Transfer for Breast Augmentation.

    Science.gov (United States)

    Kontoes, Paraskevas; Gounnaris, George

    2017-10-01

    Autologous fat grafting is quite common for breast augmentations as well as for reconstructive breast surgery. Coleman has described the surgical technique of fat grafting. Fat is harvested, and after centrifugation and refinement, blunt infiltration cannulas are used to place the fat through small incisions. The grafted tissue is placed in small aliquots with each withdrawal of the cannula. In order to achieve an aesthetically pleasing contour of the breast, the fat should be layered into different levels from the chest wall to the skin. However, autogenous lipotransfer if not performed lege artis might lead to complications such as fat necrosis, calcification, formation of encapsulated fatty masses (cystic lesions), lymphadenopathy, disfigurement of breast contouring, hypersensitive breasts, itchy nipples. A 36-year old female patient, presented with multiple palpable cystic lesions, disrupted breast contouring, asymmetry, hypersensation and pain during examination, 6 months after autologous fat grafting for breast augmentation elsewhere. The patient had ultrasound and MRI screening, which revealed the multiple bilateral cysts formation in the breast tissue. Surgical removal of the large lesions was performed, and specimens were sent for pathology and cytology consideration and screening. A few months after surgical removal of these lesions and after symptoms subsided, breast augmentation was performed with silicone implants. An aesthetically pleasing result together with relief of the patient's initial symptomatology was achieved. Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these evidence-based medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

  5. SPRINT spray intercooling augments LM6000 output

    Energy Technology Data Exchange (ETDEWEB)

    Smith, David

    1998-09-01

    By injecting water between the low pressure and high pressure compressors of an aeroderivative gas turbine, GE-IAD engineers have demonstrated that a 9 per cent increase in output accompanied by reduced life cycle costs can be achieved. Designated the SPRINT system, uprated LM 6000 units with augmented efficiency have been introduced to the market. The first two production units, both supplied to Southern Electric Power Generation in England for mid-merit independent power generation plants at Chickerell in Dorset and Burghfield in Berkshire, have each clocked in excess of 500 operating hours since start-up in early April 1998. MPS visited the Chickerell installation in late July 1998. (UK)

  6. Augmented reality for breast tumors visualization.

    Science.gov (United States)

    Ghaderi, Mohammad Ali; Heydarzadeh, Mehrdad; Nourani, Mehrdad; Gupta, Gopal; Tamil, Lakshman

    2016-08-01

    3D visualization of breast tumors are shown to be effective by previous studies. In this paper, we introduce a new augmented reality application that can help doctors and surgeons to have a more accurate visualization of breast tumors; this system uses a marker-based image-processing technique to render a 3D model of the tumors on the body. The model can be created using a combination of breast 3D mammography by experts. We have tested the system using an Android smartphone and a head-mounted device. This proof of concept can be useful for oncologists to have a more effective screening, and surgeons to plan the surgery.

  7. Pulmonary Embolism with Vertebral Augmentation Procedures

    Directory of Open Access Journals (Sweden)

    Swetha Bopparaju

    2013-01-01

    Full Text Available With the prevalence of an aging American population on the rise, osteoporotic vertebral fractures are becoming a common occurrence, resulting in an increase in vertebral augmentation procedures and associated complications such as cement leakage, vertebral compressions, and pulmonary embolism. We describe a patient who presented with respiratory distress three years following kyphoplasty of the lumbar vertebra. Computed tomography (CT angiogram of the chest confirmed the presence of polymethylmethacrylate (PMMA cement in the lung fields and pulmonary vessels. We conducted a systematic review of the published literature identifying effective management strategies for the treatment of vertebroplasty-associated pulmonary embolism.

  8. Extended overview techniques for outdoor augmented reality.

    Science.gov (United States)

    Veas, Eduardo; Grasset, Raphaël; Kruijff, Ernst; Schmalstieg, Dieter

    2012-04-01

    In this paper, we explore techniques that aim to improve site understanding for outdoor Augmented Reality (AR) applications. While the first person perspective in AR is a direct way of filtering and zooming on a portion of the data set, it severely narrows overview of the situation, particularly over large areas. We present two interactive techniques to overcome this problem: multi-view AR and variable perspective view. We describe in details the conceptual, visualization and interaction aspects of these techniques and their evaluation through a comparative user study. The results we have obtained strengthen the validity of our approach and the applicability of our methods to a large range of application domains.

  9. Freegaming: Mobile, Collaborative, Adaptive and Augmented Exergaming

    Directory of Open Access Journals (Sweden)

    Levent Görgü

    2012-01-01

    Full Text Available Addressing the obesity epidemic that plagues many societies remains an outstanding public health issue. One innovative approach to addressing this problem is Exergaming. A combination of Exercise and Gaming, the objective is to motivate people participate in exercise regimes, usually in their home environment. In this article a more holistic interpretation of this exercise paradigm is proposed. Freegaming augments Exergaming in a number of key dimensions but especially through the promotion of games in outdoor mobile contexts and within a social environment. The design and implementation of a platform for Freegaming is described and illustrated through the description of a sample game.

  10. Increase of Visible Veins After Breast Augmentation A Retrospective Analysis of 78 Consecutive Breast Augmentation Patients

    NARCIS (Netherlands)

    Andonakis, Yuri; van der Lei, Berend

    2009-01-01

    A retrospective study was undertaken to determine file pre- and postoperative presence of visible veins in the skin across the breast of patients seeking breast augmentation, and the impact of this phenomenon oil patient satisfaction. From a series of 97 consecutive patients who underwent cosmetic

  11. Augmenting Your Own Reality: Student Authoring of Science-Based Augmented Reality Games

    Science.gov (United States)

    Klopfer, Eric; Sheldon, Josh

    2010-01-01

    Augmented Reality (AR) simulations superimpose a virtual overlay of data and interactions onto a real-world context. The simulation engine at the heart of this technology is built to afford elements of game play that support explorations and learning in students' natural context--their own community and surroundings. In one of the more recent…

  12. The development of augmented video system on postcards

    Science.gov (United States)

    Chen, Chien-Hsu; Chou, Yin-Ju

    2013-03-01

    This study focuses on development of augmented video system on traditional picture postcards. The system will provide users to print out the augmented reality marker on the sticker to stick on the picture postcard, and it also allows users to record their real time image and video to augment on that stick marker. According dynamic image, users can share travel moods, greeting, and travel experience to their friends. Without changing in the traditional picture postcards, we develop augmented video system on them by augmented reality (AR) technology. It not only keeps the functions of traditional picture postcards, but also enhances user's experience to keep the user's memories and emotional expression by augmented digital media information on them.

  13. Preconditioning stimuli that augment chromaffin cell secretion.

    Science.gov (United States)

    Tapia, Laura; García-Eguiagaray, Josefina; García, Antonio G; Gandía, Luis

    2009-04-01

    We have investigated here whether a preconditioned stimulation of nicotinic and muscarinic receptors augmented the catecholamine release responses elicited by supramaximal 3-s pulses of 100 muM acetylcholine (100ACh) or 100 mM K(+) (100K(+)) applied to fast-perifused bovine adrenal chromaffin cells. Threshold concentrations of nicotine (1-3 muM) that caused only a tiny secretion did, however, augment the responses elicited by 100ACh or 100K(+) by 2- to 3.5-fold. This effect was suppressed by mecamylamine and by Ca(2+) deprivation, was developed with a half-time (t(1/2)) of 1 min, and was reversible. The nicotine effect was mimicked by threshold concentrations of ACh, choline, epibatidine, and oxotremorine-M but not by methacholine. Threshold concentrations of K(+) caused lesser potentiation of secretion compared with that of threshold nicotine. The data are compatible with an hypothesis implying 1) that continuous low-frequency sympathetic discharge places chromaffin cells at the adrenal gland in a permanent "hypersensitive" state; and 2) this allows an explosive secretion of catecholamines by high-frequency sympathetic discharge during stress.

  14. The educational possibilities of Augmented Reality

    Directory of Open Access Journals (Sweden)

    Julio Cabero Almenara

    2016-01-01

    Full Text Available A large number of emergent technologies have been acquiring a strong impulse in recent years. One of these emergent technologies is Augmented Reality (RA, which will surely have a high level of penetration into all our educational centers, including universities, in the next 3 to 5 years, as a number of different reports have already highlighted. The present paper shows various elements which, in our opinion, play an essential role when it comes to the incorporation of Augmented Reality into teaching, stressing the fact that this incorporation should not entail a technological problem but an educational and didactic issue. A mention is additionally made of several studies which have been performed with regard to the didactic exploitation of this emergent technology, as well as to the potential that it offers us. Our study forms part of an R&D&I initiative undertaken within the framework of the Plan Estatal de Fomento de la Investigación Científica y Técnica de Excelencia 2013-2016 [2013-16 State (National Plan for the Promotion of Excellence Scientific and Technical Research], with reference EDU2014-57446-P.

  15. Augmented reality in bone tumour resection

    Science.gov (United States)

    Park, Y. K.; Gupta, S.; Yoon, C.; Han, I.; Kim, H-S.; Choi, H.; Hong, J.

    2017-01-01

    Objectives We evaluated the accuracy of augmented reality (AR)-based navigation assistance through simulation of bone tumours in a pig femur model. Methods We developed an AR-based navigation system for bone tumour resection, which could be used on a tablet PC. To simulate a bone tumour in the pig femur, a cortical window was made in the diaphysis and bone cement was inserted. A total of 133 pig femurs were used and tumour resection was simulated with AR-assisted resection (164 resection in 82 femurs, half by an orthropaedic oncology expert and half by an orthopaedic resident) and resection with the conventional method (82 resection in 41 femurs). In the conventional group, resection was performed after measuring the distance from the edge of the condyle to the expected resection margin with a ruler as per routine clinical practice. Results The mean error of 164 resections in 82 femurs in the AR group was 1.71 mm (0 to 6). The mean error of 82 resections in 41 femurs in the conventional resection group was 2.64 mm (0 to 11) (p Augmented reality in bone tumour resection: An experimental study. Bone Joint Res 2017;6:137–143. PMID:28258117

  16. Boosting physics education through mobile augmented reality

    Science.gov (United States)

    Crǎciun, Dana; Bunoiu, Mǎdǎlin

    2017-12-01

    The integration of collaborative applications, based on modern learning technologies and the Internet, of various visualization techniques and digital strategies in open, flexible modern learning environments which facilitate access to resources, represents a challenge for physics teachers in Romania in general, and for novice teachers in particular. Although large efforts have been made worldwide to invest in educational technologies, their impact on the students' learning outcomes is quite modest. In this paper, we describe and analyze various curricular and extracurricular activities specifically designed for and undertaken by pre-service physics teachers. These activities employ new educational technologies, mobile augmented reality (MAR) and are based on modern teaching and learning theories. MAR is an extension for mobile devices of augmented reality, an interactive and in real time combination, of real and virtual objects overlaid in the real environment. The obtained results show that pre-service physics teachers are confident in using MAR in their teaching and learning activities, and consider that the activities performed helped them develop the skills necessary for science teachers in a technology-based society and to reflect upon the role of technology in the current Romanian educational context.

  17. Flow interaction of diffuser augmented wind turbines

    Science.gov (United States)

    Göltenbott, U.; Ohya, Y.; Yoshida, S.; Jamieson, P.

    2016-09-01

    Up-scaling of wind turbines has been a major trend in order to reduce the cost of energy generation from the wind. Recent studies however show that for a given technology, the cost always rises with upscaling, notably due to the increased mass of the system. To reach capacities beyond 10 MW, multi-rotor systems (MRS) have promising advantages. On the other hand, diffuser augmented wind turbines (DAWTs) can significantly increase the performance of the rotor. Up to now, diffuser augmentation has only been applied to single small wind turbines. In the present research, DAWTs are used in a multi-rotor system. In wind tunnel experiments, the aerodynamics of two and three DAWTs, spaced in close vicinity in the same plane normal to a uniform flow, have been analysed. Power increases of up to 5% and 9% for the two and three rotor configurations are respectively achieved in comparison to a stand-alone turbine. The physical dynamics of the flows are analysed on the basis of the results obtained with a stand-alone turbine.

  18. Prospects for optogenetic augmentation of brain function

    Directory of Open Access Journals (Sweden)

    Sarah eJarvis

    2015-11-01

    Full Text Available The ability to optically control neural activity opens up possibilities for the restoration of normal function following neurological disorders. The temporal precision, spatial resolution and neuronal specificity that optogenetics offers is unequalled by other available methods, so will it be suitable for not only restoring but also extending brain function? As the first demonstrations of optically ``implanted'' novel memories emerge, we examine the suitability of optogenetics as a technique for extending neural function. While optogenetics is an effective tool for altering neural activity, the largest impediment for optogenetics in neural augmentation is our systems level understanding of brain function. Furthermore, a number of clinical limitations currently remain as substantial hurdles for the applications proposed. While neurotechnologies for treating brain disorders and interfacing with prosthetics have advanced rapidly in the past few years, partially addressing some of these critical problems, optogenetics is not yet suitable for use in humans. Instead we conclude that for the immediate future, optogenetics is the neurological equivalent of the 3D printer: its flexibility providing an ideal tool for testing and prototyping solutions for treating brain disorders and augmenting brain function.

  19. [Arthroscopic rotator cuff repair with patch augmentation].

    Science.gov (United States)

    Flury, M

    2012-11-01

    SURGICAL OBJECTIVE: Augmentation of the rotator cuff with an ECM patch during arthroscopic rotator cuff repair is performed in order to unload the reconstruction and to activate biological healing. Reconstructable rotator cuff ruptures with reduced tendon quality. Non-reconstructable tendon defects. After tendon reconstruction the graft is shuttled and fixed on the cuff with two medially placed pulling sutures. With two lateral sutures the graft is pulled laterally over the reconstructed cuff and on the lateral tuberculum majus. Immobilization in an abduction pillow for 6 weeks with passive motion, active motion the next 6 weeks, and weight bearing after 12 weeks. Eight patients with a reconstructable re-rupture were augmented with an ECM patch. Short-term results after 6 months showed 5 (62.5%) healed tendons, 1 complete (12.5%) and 2 incomplete re-ruptures (25%). The CS (Constant Score) and SSV (Subjective Shoulder Value) were improved from 51 to 57% and 51 to 71%, which was not significant (p > 0.05). The Oxford shoulder score improved significantly from 21 to 38 (p < 0.05). There were no relevant intra- or postoperative complications.

  20. Recent Development of Augmented Reality in Surgery: A Review

    OpenAIRE

    P. Vávra; Roman,J.; P. Zonča; P. Ihnát; M. Němec; Kumar, J; Habib, N; El-Gendi, A.

    2017-01-01

    Introduction. The development augmented reality devices allow physicians to incorporate data visualization into diagnostic and treatment procedures to improve work efficiency, safety, and cost and to enhance surgical training. However, the awareness of possibilities of augmented reality is generally low. This review evaluates whether augmented reality can presently improve the results of surgical procedures. Methods. We performed a review of available literature dating from 2010 to November 2...

  1. Augmented sculptures: what you see is not what you see

    OpenAIRE

    Artut, Selçuk Hüseyin; Artut, Selcuk Huseyin

    2015-01-01

    The idea of Augmented Reality Technologies enhances our ability to perceive a location with additional 3D visual elements. A point of interest becomes meta-constructed with addition of extended layers via augmented space elements. Augmented Reality presents us a virtually enriched version of a visually noticeable reality world which already exists and can easily be seen. In this article, in addition to questioning the representative existence of the art object in the work of art called “What ...

  2. Maintenance applications of augmented reality for the Chinese aerospace industry

    OpenAIRE

    Ou, Peng

    2011-01-01

    Since augmented reality has not reached full maturity in use, it is not widely adopted within the aerospace industry. According to the literature review, minimal research efforts have been conducted to assess the cost-benefit or cost- effectiveness of augmented reality so far. Moreover, to the best of researcher’s knowledge, no research has been carried out to develop a systematic process for selecting and implementing augmented reality within the Chinese aerospace industry....

  3. AUGMENTED REALITY - STATE OF KNOWLEDGE, USE AND EXPERIMENTATION

    OpenAIRE

    Mihaela Filofteia TUTUNEA

    2013-01-01

    Technologies for augmenting reality have been consolidated during the last decades, extending their applicability to more and more socio-economic areas. The rapid evolution of mobile technologies and virtualization of the digital environment have created auspicious conditions for massive extension and implementation of solutions for augmenting reality at global level. Experience has already shown that augmented reality, alongside virtual reality can offer very important support so...

  4. Augmented Reality in Tourism – Research and Applications Overview

    OpenAIRE

    Kečkeš, Anabel L.; Igor Tomičić

    2017-01-01

    Augmented reality is a complex interdisciplinary field utilizing information technologies in diverse areas such as medicine, education, architecture, industry, tourism and others, augmenting the real-time, real-world view with additional superimposed information in chosen format(s). The aim of this paper is to present an overview of both research and application aspects of using augmented reality technologies in tourism domain. While most research, and especially applications, are dealing wit...

  5. Influence of chromium salts on increased lipid peroxidation and differential pattern in antioxidant metabolism in Pistia stratiotes L

    Directory of Open Access Journals (Sweden)

    RishiKesh Upadhyay

    2010-10-01

    Full Text Available In this work, the changing effect of different concentrations (0, 0.01, 0.1, 1, 10mM of hexavalent and trivalent chromium on different biochemical parameters along with antioxidant enzymes was investigated on water lettuce (Pistia stratiotes L. in order to know the possible involvement of this metal in oxidative injury, besides the activities of antioxidant enzymes leading to biochemical and oxidative aberration induced by elevated concentrations. Both in roots and shoots, Cr produced a significant increase in enzymic and non-enzymic antioxidants, except in catalase (CAT activity where a strong accumulation of hydrogen peroxide was indicated, suggesting an imposition of oxidative stress. The observation showed an uptake of chromium by P. stratiotes L. as well as increase in activity of antioxidants, as the concentrations and their duration of treatment increased. The activity of antioxidative enzymes determined the steady-state levels of ROS in the cell. The augmentation of antioxidative defense plays a key role in regulating the oxidative stress. This pointed to the possibility in induction of oxidative stress, with the increasing lipid peroxidation, followed by a differential pattern in antioxidant metabolisms by chromium ions in P. stratiotes L.

  6. Consumer Experience With Augmented Reality At Brands' Events

    National Research Council Canada - National Science Library

    Ana Javornik; Andreina Mandelli

    2013-01-01

    .... This exploratory study assesses the appropriateness of the variables of interactivity, telepresence and vividness for evaluating the customer experience with augmented reality at brands' events...

  7. Competitive Intelligence Analysis of Augmented Reality Technology Using Patent Information

    National Research Council Canada - National Science Library

    Byeongki Jeong; Janghyeok Yoon

    2017-01-01

    .... Despite the growing attraction of augmented reality, trend analyses in this emerging technology have relied on qualitative literature review, failing to provide comprehensive competitive intelligence...

  8. Antioxidants in HIV positive children.

    Science.gov (United States)

    Srinivas, Aruna; Dias, Bina F

    2008-04-01

    To assess the antioxidant status in HIV positive children. HIV positive children under the age group of 3-12 years from lower socio-economic strata were chosen for the study (Group 1). The values were compared with normal children (Group 2) not suffering from any disease in the same age group and similar socio-economic strata. The antioxidants chosen for the present study were vitamin A (Retinol), vitamin C (Ascorbic acid) and vitamin E (alpha tocopherol). Results obtained were subjected to statistical analysis using student 't' test (in the present study 'z' test was applied). The antioxidants vitamin A, C and E decreased in HIV positive children as compared to controls. Vitamin A was significant to the level of pchildren is due to increased utilization of antioxidant micronutrients because of increased oxidative stress caused due to free radicals.

  9. Antioxidants based on fatty acids

    Directory of Open Access Journals (Sweden)

    Kalk Christian

    2001-01-01

    Full Text Available Autoxidation is the cause for deterioration of organic materials. Many commercial products react with atmospheric oxygen under loss of quality. To retard unwanted oxidative damage and to prolong the useful life of the substrates, antioxidants are used to protect the organic matter. We linked phenolic compounds with fatty acids to obtain fatty acid conjugates with antioxidative action. The conjugates have a similar constitution like hindered phenols e.g. tert.-butyl-hydroxy-anisole (BHA and show good antioxidative action in the Rancimat-test. Ascorbic acid is an antioxidant and a strong reducing agent. Its action is based on a ketoene-diol structure. We were able to insert an analogous structure into a fatty acid chain. The products we obtained have similar oxidation potentials as ascorbic acid

  10. Treatment of stable COPD: antioxidants

    Directory of Open Access Journals (Sweden)

    W. MacNee

    2005-09-01

    Full Text Available There is considerable evidence that an increased oxidative burden occurs in the lungs of patients with chronic obstructive pulmonary disease (COPD and this results in an imbalance between oxidants/antioxidants or oxidative stress, which may play a role in many of the processes involved in the pathogenesis of COPD. These include enhanced proteolytic activity, mucus hypersecretion and the enhanced inflammatory response in the lungs to inhaling tobacco smoke, which is characteristic of COPD. COPD is now recognised to have multiple systemic consequences, such as weight loss and skeletal muscle dysfunction. It is now thought that oxidative stress may extend beyond the lungs and is involved in these systemic effects. Antioxidant therapy therefore would seem to be a logical therapeutic approach in chronic obstructive pulmonary disease. There is a need for more potent antioxidant therapies to test the hypothesis that antioxidant drugs may be a new therapeutic strategy for the prevention and treatment of chronic obstructive pulmonary disease.

  11. Nicotine Exposure Augments Renal Toxicity of 5-aza-cytidine Through p66shc: Prevention by Resveratrol.

    Science.gov (United States)

    Arany, Istvan; Hall, Samuel; Faisal, Amir; Dixit, Mehul

    2017-08-01

    We have shown that either chronic nicotine (NIC) exposure or 5-aza-cytidine (AZA) augments oxidative stress-dependent injury through stimulating p66shc in renal cells. Hence, NIC could exacerbate adverse effects of AZA while antioxidants such as resveratrol (RES) could prevent it. Renal proximal tubule cells (NRK52E) were treated with 20 μM RES prior to 200 μM NIC plus 100 nM AZA and cell injury (LDH release) was determined. Reporter luciferase assays determined p66shc activation and RES-induced antioxidant responses. Genetic manipulations identified the mechanism of RES action. NIC exacerbated AZA-dependent injury via augmenting p66shc transcription. While RES suppressed NIC+AZA-mediated injury, -surprisingly-it further enhanced activity of the p66shc promoter. RES protected cells via the cytoplasmic p66shc/Nrf2/heme oxygenase-1 (HO-1) axis. RES can protect the kidney from adverse effects of NIC in patients undergoing anticancer therapy. Copyright© 2017, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.

  12. Oral administration of antioxidants improves skin wound healing in diabetic mice.

    Science.gov (United States)

    Pessoa, Ana Flávia Marçal; Florim, Juliana Costa; Rodrigues, Hosana Gomes; Andrade-Oliveira, Vinicius; Teixeira, Simone A; Vitzel, Kaio Fernando; Curi, Rui; Saraiva Câmara, Niels Olsen; Muscará, Marcelo N; Lamers, Marcelo Lazzaron; Santos, Marinilce Fagundes

    2016-11-01

    Oxidative stress aggravates several long-term complications in diabetes mellitus. We evaluated the effectiveness of the oral administration of antioxidants (vitamins E and C, 40 and 100 mg/kg b.w., respectively) on skin wound healing acceleration in alloxan-induced diabetic mice. Mice were wounded 30 days after the induction of diabetes. Antioxidants were effective in preventing oxidative stress, as assessed by TBARS. The enzymes catalase, glutathione reductase, glutathione peroxidase, and superoxide dismutase were increased in diabetics on the 3rd day post-wounding; catalase and glutathione peroxidase remained still augmented in diabetics after 14th day postwounding, and the treatment with vitamins restored their activities to control. After 3 days, diabetic mice showed lower infiltration of inflammatory cells (including CD11b + and Ly6G + cells) and reduced levels of KC, TNF-α, IL-1β, and IL-12 p40 when compared with control mice. The treatment restored cytokine levels. After 14 days, diabetic mice showed late wound closure, persistent inflammation and delayed reepithelialization, accompanied by an increase in MIG + /CD206 - macrophages whereas CD206 + /MIG - macrophages were decreased. Cytokines IL-12p40, TNF-α, IL-1β, and KC were increased and normal levels were restored after treatment with antioxidants. These results suggest that oxidative stress plays a major role in diabetic wound healing impairment and the oral administration of antioxidants improves healing by modulating inflammation and the antioxidant system with no effect on glycemia. © 2016 by the Wound Healing Society.

  13. Oxidants and antioxidants in disease

    DEFF Research Database (Denmark)

    Lykkesfeldt, Jens; Svendsen, Ove

    2007-01-01

    Important infectious diseases in farm animals, such as pneumonia and enteritis, are thought to be associated with the so-called oxidative stress, i.e. a chemical phenomenon involving an imbalance in the redox status of the individual animal. The specifics of oxidative stress and how it may result...... theoretically, oxidative stress should be easily prevented with antioxidants yet the use of antioxidants as therapy remains controversial. The present knowledge on oxidative stress in farm animals is the topic of this review....

  14. COPD: balancing oxidants and antioxidants

    Directory of Open Access Journals (Sweden)

    Fischer BM

    2015-02-01

    Full Text Available Bernard M Fischer,1,* Judith A Voynow,2,* Andrew J Ghio3,* 1Department of Pediatrics, Duke University Medical Center, Durham, NC, USA; 2Department of Pediatrics, Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, VA, USA; 3National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Chapel Hill, NC, USA *These authors contributed equally to this work Abstract: Chronic obstructive pulmonary disease (COPD is one of the most common chronic illnesses in the world. The disease encompasses emphysema, chronic bronchitis, and small airway obstruction and can be caused by environmental exposures, primarily cigarette smoking. Since only a small subset of smokers develop COPD, it is believed that host factors interact with the environment to increase the propensity to develop disease. The major pathogenic factors causing disease include infection and inflammation, protease and antiprotease imbalance, and oxidative stress overwhelming antioxidant defenses. In this review, we will discuss the major environmental and host sources for oxidative stress; discuss how oxidative stress regulates chronic bronchitis; review the latest information on genetic predisposition to COPD, specifically focusing on oxidant/antioxidant imbalance; and review future antioxidant therapeutic options for COPD. The complexity of COPD will necessitate a multi-target therapeutic approach. It is likely that antioxidant supplementation and dietary antioxidants will have a place in these future combination therapies. Keywords: cigarette smoking, mucins, gene regulation, Chinese herbs, acupuncture, dietary antioxidants

  15. Development of the augmented musculature device.

    Energy Technology Data Exchange (ETDEWEB)

    Rohrer, Brandon Robinson; Pankretz, Ty

    2004-12-01

    We developed an Augmented Musculature Device (AMD) that assists the movements of its wearer. It has direct application to aiding military and law enforcement personnel, the neurologically impaired, or those requiring any type of cybernetic assistance. The AMD consists of a collection of artificial muscles, each individually actuated, strategically placed along the surface of the human body. The actuators employed by the AMD are known as 'air muscles' and operate pneumatically. They are commercially available from several vendors and are relatively inexpensive. They have a remarkably high force-to-weight ratio--as high as 400:1 (as compared with 16:1 typical of DC motors). They are flexible and elastic, even when powered, making them ideal for interaction with humans.

  16. Visualizing Sea Level Rise with Augmented Reality

    Science.gov (United States)

    Kintisch, E. S.

    2013-12-01

    Looking Glass is an application on the iPhone that visualizes in 3-D future scenarios of sea level rise, overlaid on live camera imagery in situ. Using a technology known as augmented reality, the app allows a layperson user to explore various scenarios of sea level rise using a visual interface. Then the user can see, in an immersive, dynamic way, how those scenarios would affect a real place. The first part of the experience activates users' cognitive, quantitative thinking process, teaching them how global sea level rise, tides and storm surge contribute to flooding; the second allows an emotional response to a striking visual depiction of possible future catastrophe. This project represents a partnership between a science journalist, MIT, and the Rhode Island School of Design, and the talk will touch on lessons this projects provides on structuring and executing such multidisciplinary efforts on future design projects.

  17. Out of the Cube: Augmented Rubik's Cube

    Directory of Open Access Journals (Sweden)

    Oriel Bergig

    2011-01-01

    Full Text Available Computer gaming habits have a tendency to evolve with technology, the best being ones that immerse both our imagination and intellect. Here, we describe a new game platform, an Augmented Reality Rubik's cube. The cube acts simultaneously as both the controller and the game board. Gameplay is controlled by the cube, and game assets are rendered on top of it. Shuffling and tilting operations on the cube are mapped to game interaction. We discuss the game design decisions involved in developing a game for this platform, as well as the technological challenges in implementing it. Ultimately, we describe two games and discuss the conclusions of an informal user study based on those games.

  18. Augmented reality i en industriell tillverkningsprocess

    OpenAIRE

    Wass, Anton; Löwenborg Forsberg, Eddie

    2017-01-01

    Med den digitalisering som sker just nu i den industriella världen väcks stor nyfikenhet på hur framtidens tekniker såsom “Augmented Reality” kan appliceras i industriella tillverkningsprocesser. Målet med examensarbetet var att undersöka om och hur AR-teknik kan utnyttjas i industrin för att förbättra nuvarande arbetsprocesser. Två prototyper utvecklades för AR-glasögonen Microsoft HoloLens och utvärderades genom att jämföra tidigare arbetssätt med nya. Testerna av prototyperna visade att ef...

  19. Digital Facial Augmentation for Interactive Entertainment

    Directory of Open Access Journals (Sweden)

    Naoto Hieda

    2015-08-01

    Full Text Available Digital projection technology allows for effective and entertaining spatial augmented reality applications. Leveraging the capabilities of reasonably accurate object tracking using commodity cameras and/or depth sensors to determine the 3D position and pose of objects in real time, it is possible to project dynamic graphical content on arbitrary surfaces, such as a person’s face. Coupling these capabilities with a simple drawing application, participants can have the experience of "painting" on someone’s face, or even on their own, by observing the projection in a mirror. Similarly, integrating 2D rigid-body, fluid and gravity simulation, one may interact with virtual objects projected on their own face or body.

  20. Augmented reality approach for metabolic pathways teaching

    Directory of Open Access Journals (Sweden)

    Juan Carlos Vega Garzón

    2014-12-01

    Full Text Available A glycolysis paper puzzle has been used as strategy to teach metabolic pathways, but this kind of game demands a higher number of instructors and limits the follow up of the students’ difficulties. A technology called Augmented Reality (AR was applied to enable the puzzle usage in large audiences, and to provid feedback to students and instructors. Drafted as flashcards readable by an app installed in tablets, it conveys information as molecules 3D-structure, clues for correct assembling of the metabolic pathway and results of student progression in the activity. Such technological improvement brought more autonomy to students for solving proposed exercises and an embedded performance data collection system helpful to understand,and after to unravel students’ difficulties.

  1. Temporal Coherence Strategies for Augmented Reality Labeling.

    Science.gov (United States)

    Madsen, Jacob Boesen; Tatzqern, Markus; Madsen, Claus B; Schmalstieg, Dieter; Kalkofen, Denis

    2016-04-01

    Temporal coherence of annotations is an important factor in augmented reality user interfaces and for information visualization. In this paper, we empirically evaluate four different techniques for annotation. Based on these findings, we follow up with subjective evaluations in a second experiment. Results show that presenting annotations in object space or image space leads to a significant difference in task performance. Furthermore, there is a significant interaction between rendering space and update frequency of annotations. Participants improve significantly in locating annotations, when annotations are presented in object space, and view management update rate is limited. In a follow-up experiment, participants appear to be more satisfied with limited update rate in comparison to a continuous update rate of the view management system.

  2. Googles Augmented-Reality-Game "Ingress"

    Directory of Open Access Journals (Sweden)

    Karl H. Stingeder

    2013-12-01

    Full Text Available Das an das "Geocoaching"-Spielprinzip erinnernde Augmented-­Reality-Game "Ingress" ist auf allen mit Android-Betriebssystem ausgestatteten Smartphones spielbar. Das Alleinstellungsmerkmal des Spiels ist gleich­zeitig auch das beste Patent-Rezept für bzw. gegen notorisches "Couch-Potato-ing": Das Game-Design des "Draußenspiels" erfordert jedoch stets die physische Anwesenheit der SpielerInnen am realen Ort des Geschehens, meist touristisch attraktive Sehenswürdigkeiten und architektonisch markante Plätze. Sobald "Ingress" per App am Smart­phone gestartet wird, stehen Interaktionen und Machtverhältnisse auf dem Handy-Display im Dreh- und Angelpunkt des Geschehens. Die Spielgrafik ist auf das Wesentliche reduziert und erinnert an die Optik von Videospielen der 80er Jahre. "Ingress" im Allgemeinen sowie "Magnus13", die erste von Google organisierte Fan-Veranstaltung Österreichs mit mehreren Hundert TeilnehmerInnen und ist mit einer "digitalen Schnitzeljagd" vergleichbar: Gemeinsam ist der klassischen "Schnitzeljagd" und dem digitalen "Schere-Schein-Papier" Prinzip von "Ingress" die tragende Rolle des im Spiel entstehenden Gemeinschaftsgefühls, welche in einer hohen Langzeitmotivation mündet. Trotz aller Euphorie, ob des unkonventionellen Augmented-Reality-Spielkonzepts und des in Folge der sozialen Dynamik außergewöhnlichen Sucht­potentials, ist angesichts von Edward Snowden und vielfältiger NSA-Abhörmaßnahmen, eine gesunde Portion Skepsis angebracht: Welchen Zweck erfüllt "Ingress"? Gibt es ein verhülltes "Mittel zum Zweck"? Welche Gefahren bestehen mit einer systematischen Auswertung des umfangreichen, ortsrelevanten Daten-Sammelsuriums? "Ingress" verdeutlicht trotz aller Risiken den soziokulturellen Bedeutungswandel des digitalen Spiels: Spiele per se und das Spiel als soziale Interaktion sind aktuell dabei, alle Bereiche unseres Lebens zu erfassen.

  3. Augmented reality in a tumor resection model.

    Science.gov (United States)

    Chauvet, Pauline; Collins, Toby; Debize, Clement; Novais-Gameiro, Lorraine; Pereira, Bruno; Bartoli, Adrien; Canis, Michel; Bourdel, Nicolas

    2018-03-01

    Augmented Reality (AR) guidance is a technology that allows a surgeon to see sub-surface structures, by overlaying pre-operative imaging data on a live laparoscopic video. Our objectives were to evaluate a state-of-the-art AR guidance system in a tumor surgical resection model, comparing the accuracy of the resection with and without the system. Our system has three phases. Phase 1: using the MRI images, the kidney's and pseudotumor's surfaces are segmented to construct a 3D model. Phase 2: the intra-operative 3D model of the kidney is computed. Phase 3: the pre-operative and intra-operative models are registered, and the laparoscopic view is augmented with the pre-operative data. We performed a prospective experimental study on ex vivo porcine kidneys. Alginate was injected into the parenchyma to create pseudotumors measuring 4-10 mm. The kidneys were then analyzed by MRI. Next, the kidneys were placed into pelvictrainers, and the pseudotumors were laparoscopically resected. The AR guidance system allows the surgeon to see tumors and margins using classical laparoscopic instruments, and a classical screen. The resection margins were measured microscopically to evaluate the accuracy of resection. Ninety tumors were segmented: 28 were used to optimize the AR software, and 62 were used to randomly compare surgical resection: 29 tumors were resected using AR and 33 without AR. The analysis of our pathological results showed 4 failures (tumor with positive margins) (13.8%) in the AR group, and 10 (30.3%) in the Non-AR group. There was no complete miss in the AR group, while there were 4 complete misses in the non-AR group. In total, 14 (42.4%) tumors were completely missed or had a positive margin in the non-AR group. Our AR system enhances the accuracy of surgical resection, particularly for small tumors. Crucial information such as resection margins and vascularization could also be displayed.

  4. Augmented reality in neurosurgery: a systematic review.

    Science.gov (United States)

    Meola, Antonio; Cutolo, Fabrizio; Carbone, Marina; Cagnazzo, Federico; Ferrari, Mauro; Ferrari, Vincenzo

    2017-10-01

    Neuronavigation has become an essential neurosurgical tool in pursuing minimal invasiveness and maximal safety, even though it has several technical limitations. Augmented reality (AR) neuronavigation is a significant advance, providing a real-time updated 3D virtual model of anatomical details, overlaid on the real surgical field. Currently, only a few AR systems have been tested in a clinical setting. The aim is to review such devices. We performed a PubMed search of reports restricted to human studies of in vivo applications of AR in any neurosurgical procedure using the search terms "Augmented reality" and "Neurosurgery." Eligibility assessment was performed independently by two reviewers in an unblinded standardized manner. The systems were qualitatively evaluated on the basis of the following: neurosurgical subspecialty of application, pathology of treated lesions and lesion locations, real data source, virtual data source, tracking modality, registration technique, visualization processing, display type, and perception location. Eighteen studies were included during the period 1996 to September 30, 2015. The AR systems were grouped by the real data source: microscope (8), hand- or head-held cameras (4), direct patient view (2), endoscope (1), and X-ray fluoroscopy (1) head-mounted display (1). A total of 195 lesions were treated: 75 (38.46 %) were neoplastic, 77 (39.48 %) neurovascular, and 1 (0.51 %) hydrocephalus, and 42 (21.53 %) were undetermined. Current literature confirms that AR is a reliable and versatile tool when performing minimally invasive approaches in a wide range of neurosurgical diseases, although prospective randomized studies are not yet available and technical improvements are needed.

  5. Topical treatment with coenzyme Q10-containing formulas improves skin's Q10 level and provides antioxidative effects.

    Science.gov (United States)

    Knott, Anja; Achterberg, Volker; Smuda, Christoph; Mielke, Heiko; Sperling, Gabi; Dunckelmann, Katja; Vogelsang, Alexandra; Krüger, Andrea; Schwengler, Helge; Behtash, Mojgan; Kristof, Sonja; Diekmann, Heike; Eisenberg, Tanya; Berroth, Andreas; Hildebrand, Janosch; Siegner, Ralf; Winnefeld, Marc; Teuber, Frank; Fey, Sven; Möbius, Janne; Retzer, Dana; Burkhardt, Thorsten; Lüttke, Juliane; Blatt, Thomas

    2015-01-01

    Ubiquinone (coenzyme Q10, Q10) represents an endogenously synthesized lipid-soluble antioxidant which is crucial for cellular energy production but is diminished with age and under the influence of external stress factors in human skin. Here, it is shown that topical Q10 treatment is beneficial with regard to effective Q10 replenishment, augmentation of cellular energy metabolism, and antioxidant effects. Application of Q10-containing formulas significantly increased the levels of this quinone on the skin surface. In the deeper layers of the epidermis the ubiquinone level was significantly augmented indicating effective supplementation. Concurrent elevation of ubiquinol levels suggested metabolic transformation of ubiquinone resulting from increased energy metabolism. Incubation of cultured human keratinocytes with Q10 concentrations equivalent to treated skin showed a significant augmentation of energy metabolism. Moreover, the results demonstrated that stressed skin benefits from the topical Q10 treatment by reduction of free radicals and an increase in antioxidant capacity. © 2015 International Union of Biochemistry and Molecular Biology.

  6. Topical treatment with coenzyme Q10‐containing formulas improves skin's Q10 level and provides antioxidative effects

    Science.gov (United States)

    Achterberg, Volker; Smuda, Christoph; Mielke, Heiko; Sperling, Gabi; Dunckelmann, Katja; Vogelsang, Alexandra; Krüger, Andrea; Schwengler, Helge; Behtash, Mojgan; Kristof, Sonja; Diekmann, Heike; Eisenberg, Tanya; Berroth, Andreas; Hildebrand, Janosch; Siegner, Ralf; Winnefeld, Marc; Teuber, Frank; Fey, Sven; Möbius, Janne; Retzer, Dana; Burkhardt, Thorsten; Lüttke, Juliane; Blatt, Thomas

    2015-01-01

    Abstract Ubiquinone (coenzyme Q10, Q10) represents an endogenously synthesized lipid‐soluble antioxidant which is crucial for cellular energy production but is diminished with age and under the influence of external stress factors in human skin. Here, it is shown that topical Q10 treatment is beneficial with regard to effective Q10 replenishment, augmentation of cellular energy metabolism, and antioxidant effects. Application of Q10‐containing formulas significantly increased the levels of this quinone on the skin surface. In the deeper layers of the epidermis the ubiquinone level was significantly augmented indicating effective supplementation. Concurrent elevation of ubiquinol levels suggested metabolic transformation of ubiquinone resulting from increased energy metabolism. Incubation of cultured human keratinocytes with Q10 concentrations equivalent to treated skin showed a significant augmentation of energy metabolism. Moreover, the results demonstrated that stressed skin benefits from the topical Q10 treatment by reduction of free radicals and an increase in antioxidant capacity. © 2015 BioFactors, 41(6):383–390, 2015 PMID:26648450

  7. A Systematic Review of Pliance, Tracking, and Augmenting

    NARCIS (Netherlands)

    Kissi, Ama; Hughes, Sean; Mertens, Gaëtan; Barnes-Holmes, Dermot; De Houwer, Jan; Crombez, Geert

    Within relational frame theory, a distinction has been made between three types of rule-governed behavior known as pliance, tracking, and augmenting. This review examined whether there is support for the concepts of pliance, tracking, and augmenting in the experimental analysis of behavior; whether

  8. Routine sensor-augmented pump therapy in type 1 diabetes

    DEFF Research Database (Denmark)

    Nørgaard, Kirsten; Scaramuzza, Andrea; Bratina, Natasa

    2013-01-01

    Sensor-augmented pump (SAP) therapy can improve glycemic control, compared with multiple daily insulin injections or with insulin pump therapy alone, without increasing the risk of hypoglycemia.......Sensor-augmented pump (SAP) therapy can improve glycemic control, compared with multiple daily insulin injections or with insulin pump therapy alone, without increasing the risk of hypoglycemia....

  9. Projector augmented wave method: ab initio molecular dynamics ...

    Indian Academy of Sciences (India)

    http://www.ias.ac.in/article/fulltext/boms/026/01/0033-0041 ... A brief introduction to the projector augmented wave method is given and recent developments are reviewed. The projector augmented wave method is an all-electron method for efficient ab initio molecular dynamics simulations with full wave functions. It extends ...

  10. Buspirone is an effective augmenting agent of serotonin selective re ...

    African Journals Online (AJOL)

    Background. Buspirone has previously been reported to be effective in the augmentation of the antidepressant effect of serotonin selective re-uptake inhibitors (SSRls) in depressed outpatients. We report on buspirone augmentation of SSRls in severe treatment-refractory depression in inpatients. Methods. A retrospective ...

  11. Augmentative biological control of arthropods in Latin America

    NARCIS (Netherlands)

    Lenteren, van J.C.; Bueno, V.H.P.

    2003-01-01

    Augmentative forms of biological control, where natural enemies are periodically introduced, are applied over large areas in various cropping systems in Latin America. About 25% of the world area under augmentative control is situated in this region. Well-known examples are the use of species of the

  12. Augmented Reality, the Future of Contextual Mobile Learning

    Science.gov (United States)

    Sungkur, Roopesh Kevin; Panchoo, Akshay; Bhoyroo, Nitisha Kirtee

    2016-01-01

    Purpose: This study aims to show the relevance of augmented reality (AR) in mobile learning for the 21st century. With AR, any real-world environment can be augmented by providing users with accurate digital overlays. AR is a promising technology that has the potential to encourage learners to explore learning materials from a totally new…

  13. Augmented Local Anaesthesia In Selected Cases Of Thyroidectomy ...

    African Journals Online (AJOL)

    An augmentation of anaesthesia in 12 selected cases of thyroidectomy in a rural practice is presented. The cases were selected according to well defined criteria. The augmentation involved the use of general anaesthesia with ketarmine hydrochloride and diazepam, at the state of mobilizing the superior poles of the gland.

  14. Complications 15 years after breast augmentation with polyacrylamide

    Directory of Open Access Journals (Sweden)

    Habib M. Ghasemi

    2015-06-01

    Full Text Available Polyacrylamide hydrogel (PAAG has been used as an injectable, permanent filler for soft-tissue augmentation for more than two decades. Several complications have been reported worldwide. In this case report, we present a woman with long-term complications 15 years after bilateral breast augmentation with PAAG injections.

  15. AUGMENTED REALITY - STATE OF KNOWLEDGE, USE AND EXPERIMENTATION

    Directory of Open Access Journals (Sweden)

    Mihaela Filofteia TUTUNEA

    2013-12-01

    Full Text Available Technologies for augmenting reality have been consolidated during the last decades, extending their applicability to more and more socio-economic areas. The rapid evolution of mobile technologies and virtualization of the digital environment have created auspicious conditions for massive extension and implementation of solutions for augmenting reality at global level. Experience has already shown that augmented reality, alongside virtual reality can offer very important support solutions in modeling the real world with the aim of extending the human capabilities of perception, allowing the opening of a new phase in the world’s socio-economic development. Starting from the evident tendencies that have manifested at global level in the development and implementation of augmented reality technologies, the paper begins with the presentation of the most important aspects related to augmented reality technologies, highlighting their main areas of application, and presents the study realized for identifying the level of knowledge, use and effective experimentation of augmented reality applications by mobile device users. The results of this study could be very useful to the socio-economic environment, starting with the field of research, continuing with developers and providers of augmented reality solutions, manufacturers and providers of hardware infrastructure support for augmented reality solutions and systems, final users of these solutions, both individuals and businesses, and experimenting digital communities.

  16. Pose estimation for mobile devices and augmented reality

    NARCIS (Netherlands)

    Caarls, J.

    2009-01-01

    In this thesis we introduce the reader to the field of Augmented Reality (AR) and describe aspects of an AR system. We show the current uses in treatment of phobias, games, sports and industry. We present the challenges for Optical See-Through Augmented Reality in which the real world is perceived

  17. Augmented Reality Learning Experiences: Survey of Prototype Design and Evaluation

    Science.gov (United States)

    Santos, Marc Ericson C.; Chen, Angie; Taketomi, Takafumi; Yamamoto, Goshiro; Miyazaki, Jun; Kato, Hirokazu

    2014-01-01

    Augmented reality (AR) technology is mature for creating learning experiences for K-12 (pre-school, grade school, and high school) educational settings. We reviewed the applications intended to complement traditional curriculum materials for K-12. We found 87 research articles on augmented reality learning experiences (ARLEs) in the IEEE Xplore…

  18. Augmenting a Child's Reality: Using Educational Tablet Technology

    Science.gov (United States)

    Tanner, Patricia; Karas, Carly; Schofield, Damian

    2014-01-01

    This study investigates the classroom integration of an innovative technology, augmented reality. Although the process of adding new technologies into a classroom setting can be daunting, the concept of augmented reality has demonstrated the ability to educate students and to assist with their comprehension of a procedural task. One half of the…

  19. The Local Games Lab ABQ: Homegrown Augmented Reality

    Science.gov (United States)

    Holden, Christopher

    2014-01-01

    Experiments in the use of augmented reality games formerly required extensive material resources and expertise to implement above and beyond what might be possible within the usual educational contexts. Currently, the more common availability of hardware in these contexts and the existence of easy-to-use, general purpose augmented reality design…

  20. Potential Use of Augmented Reality in LIS Education

    Science.gov (United States)

    Wójcik, Magdalena

    2016-01-01

    The subject of this article is the use of augmented reality technology in library and information science education. The aim is to determine the scope and potential uses of augmented reality in the education of information professionals. In order to determine the scope and forms of potential use of AR technology in LIS education a two-step…

  1. Pose estimation for mobile devices and augmented reality

    NARCIS (Netherlands)

    Van Vliet, L.J.; Jonker, P.P.; Caarls, J.

    In this thesis we introduce the reader to the field of Augmented Reality (AR) and describe aspects of an AR system. We show the current uses in treatment of phobias, games, sports and industry. We present the challenges for Optical See-Through Augmented Reality in which the real world is perceived

  2. Augmented Reality Learning Experiences: Survey of Prototype Design and Evaluation

    Science.gov (United States)

    Santos, Marc Ericson C.; Chen, Angie; Taketomi, Takafumi; Yamamoto, Goshiro; Miyazaki, Jun; Kato, Hirokazu

    Augmented reality (AR) technology is mature for creating learning experiences for K-12 (pre-school, grade school, and high school) educational settings. We reviewed the applications intended to complement traditional curriculum materials for K-12. We found 87 research articles on augmented reality learning experiences (ARLEs) in the IEEE Xplore…

  3. Augmented Reality at the Tactical and Operational Levels of War

    Science.gov (United States)

    2015-10-24

    currently available AR smart -glasses and AR contact lenses . Microsoft – HoloLens. Microsoft has dedicated over a thousand employees and a billion dollars...Augmented Reality Visors, Glasses, and Contact Lenses .................................................................... 20 How Augmented Reality... contact lenses . As such, they provide continuous access to AR content. With their arrival, AR systems will fundamentally change how users interact

  4. ARLearn: Learning activities and interaction in augmented reality

    NARCIS (Netherlands)

    Ternier, Stefaan; Tabuenca, Bernardo; Specht, Marcus

    2013-01-01

    Ternier, S., Tabuenca, B., & Specht, M. (2012). ARLearn: Learning activities and interaction in augmented reality. In M. Specht, J. Multisilta, & M. Sharples (Eds.), Proceedings of the Mobile Augmented Reality for Education Workshop (pp. 10-13). October, 16-17, 2012, Helsinki, Finland.

  5. International workshop on multimodal virtual and augmented reality (workshop summary)

    NARCIS (Netherlands)

    Hürst, W.O.; Iwai, Daisuke; Balakrishnan, Prabhakaran

    2016-01-01

    Virtual reality (VR) and augmented reality (AR) are expected by many to become the next wave of computing with significant impacts on our daily lives. Motivated by this, we organized a workshop on “Multimodal Virtual and Augmented Reality (MVAR)” at the 18th ACM International Conference on

  6. Augmenting cognition: Reviewing the symbiotic relation between man and machine

    NARCIS (Netherlands)

    Greef, T.E. de; Dongen, C.J.G. van; Grootjen, M.; Lindenberg, J.

    2007-01-01

    One of the goals of augmented cognition is creation of adaptive human-machine collaboration that continually optimizes performance of the human-machine system. Augmented Cognition aims to compensate for temporal limitations in human information processing, for instance in the case of overload,

  7. the use of augmented reality in command and control situation ...

    African Journals Online (AJOL)

    Abel

    Augmented reality is not completely new technology, but rather an interesting combination of existing technologies, ... Augmented reality applications are becoming more popular due to the remarkable progress in ultra-mobile ..... 1) increased loading on operators to provide status reports;. 2) dissemination of status reports;.

  8. Sensor-augmented pump therapy at 36 months

    DEFF Research Database (Denmark)

    Schmidt, Signe; Nørgaard, Kirsten

    2012-01-01

    This follow-up study investigates the metabolic and psychosocial effects of sensor-augmented pump (SAP) therapy in adults with type 1 diabetes 36 months after therapy start.......This follow-up study investigates the metabolic and psychosocial effects of sensor-augmented pump (SAP) therapy in adults with type 1 diabetes 36 months after therapy start....

  9. 14 CFR 91.1061 - Augmented flight crews.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Augmented flight crews. 91.1061 Section 91...) AIR TRAFFIC AND GENERAL OPERATING RULES GENERAL OPERATING AND FLIGHT RULES Fractional Ownership Operations Program Management § 91.1061 Augmented flight crews. (a) No program manager may assign any flight...

  10. PARAMETERS OF AUGMENTED REALITY AND ITS USE IN EDUCATION

    Directory of Open Access Journals (Sweden)

    JEŘÁBEK, Tomáš

    2013-12-01

    Full Text Available This article examines the issue of augmented reality and possibilities of its application in education. It briefly reports on selected results of a broader survey focused on technological, psychological, physiological and didactical aspects of the issue. It presumes that augmented reality has its unique place in technical teaching tools since it is a technological-perception concept, which in certain didactical situations creates more suitable perceptual environment than real environment itself on one hand, or virtual environment on the other. It focuses on identification of the technological-functional properties and specifics of augmented reality systems and on verification of model examples of augmented reality applications in school practice. It characterizes the course and results of empirical research project based on a descriptive case study exploring the cases of implementing selected application solutions of augmented reality into learning experience in accordance with the model of pro-active action research.

  11. Applying Augmented Reality in practical classes for engineering students

    Science.gov (United States)

    Bazarov, S. E.; Kholodilin, I. Yu; Nesterov, A. S.; Sokhina, A. V.

    2017-10-01

    In this article the Augmented Reality application for teaching engineering students of electrical and technological specialties is introduced. In order to increase the motivation for learning and the independence of students, new practical guidelines on Augmented Reality were developed in the application to practical classes. During the application development, the authors used software such as Unity 3D and Vuforia. The Augmented Reality content consists of 3D-models, images and animations, which are superimposed on real objects, helping students to study specific tasks. A user who has a smartphone, a tablet PC, or Augmented Reality glasses can visualize on-screen virtual objects added to a real environment. Having analyzed the current situation in higher education: the learner’s interest in studying, their satisfaction with the educational process, and the impact of the Augmented Reality application on students, a questionnaire was developed and offered to students; the study involved 24 learners.

  12. Augmented Reality as a Countermeasure for Sleep Deprivation.

    Science.gov (United States)

    Baumeister, James; Dorrlan, Jillian; Banks, Siobhan; Chatburn, Alex; Smith, Ross T; Carskadon, Mary A; Lushington, Kurt; Thomas, Bruce H

    2016-04-01

    Sleep deprivation is known to have serious deleterious effects on executive functioning and job performance. Augmented reality has an ability to place pertinent information at the fore, guiding visual focus and reducing instructional complexity. This paper presents a study to explore how spatial augmented reality instructions impact procedural task performance on sleep deprived users. The user study was conducted to examine performance on a procedural task at six time points over the course of a night of total sleep deprivation. Tasks were provided either by spatial augmented reality-based projections or on an adjacent monitor. The results indicate that participant errors significantly increased with the monitor condition when sleep deprived. The augmented reality condition exhibited a positive influence with participant errors and completion time having no significant increase when sleep deprived. The results of our study show that spatial augmented reality is an effective sleep deprivation countermeasure under laboratory conditions.

  13. Computational modelling of bone augmentation in the spine

    Directory of Open Access Journals (Sweden)

    Sandro D. Badilatti

    2015-10-01

    Full Text Available Computational models are gaining importance not only for basic science, but also for the analysis of clinical interventions and to support clinicians prior to intervention. Vertebroplasty has been used to stabilise compression fractures in the spine for years, yet there are still diverging ideas on the ideal deposition location, volume, and augmentation material. In particular, little is known about the long-term effects of the intervention on the surrounding biological tissue. This review aims to investigate computational efforts made in the field of vertebroplasty, from the augmentation procedure to strength prediction and long-term in silico bone biology in augmented human vertebrae. While there is ample work on simulating the augmentation procedure and strength prediction, simulations predicting long-term effects are lacking. Recent developments in bone remodelling simulations have the potential to show adaptation to cement augmentation and, thus, close this gap.

  14. Augmented Reality in Tourism - Research and Applications Overview

    Directory of Open Access Journals (Sweden)

    Anabel L. Kečkeš

    2017-06-01

    Full Text Available Augmented reality is a complex interdisciplinary field utilizing information technologies in diverse areas such as medicine, education, architecture, industry, tourism and others, augmenting the real-time, real-world view with additional superimposed information in chosen format(s. The aim of this paper is to present an overview of both research and application aspects of using augmented reality technologies in tourism domain. While most research, and especially applications, are dealing with and developing visual-based augmented reality systems, there is a relevant amount of research discussing the utilization of other human senses such as tactioception and audioception, both being discussed within this work. A comprehensive literature analysis within this paper resulted with the identification, compilation and categorization of the key factors having the most relevant impact on the success of utilization of augmented technology in tourism domain.

  15. ANTIOXIDANT POTENCY OF WATER KEFIR

    Directory of Open Access Journals (Sweden)

    Muneer Alsayadi M.S.

    2013-06-01

    Full Text Available Reactive oxygen species (ROS have strong relationship with several diseases. Many fermented foods were reported to be important sources for antioxidant compounds. Antioxidant activity of water kefir never reported in the scientific literature. The objective of this study was to detect and investigate the antioxidant potency of water kefir. Water kefir was prepared by fermentation of sugar solution with kefir grains for 24h. Antioxidant activity of fresh water kefir drink and its extract with (0.125–5 mg/ml was evaluated using 2,2,-diphenyl-1-pricrylhydrozyl (DPPH scavenging method, and inhibition of ascorbate autoxidation and the reducing power of water kefir were determined, Butylated hydroxyanisole (BHA and ascorbic acid were used for comparison. Water kefir demonstrated great ability to DPPH scavenging ranged (9.88-63.17%. And inhibit ascorbate oxidation by (6.08-25.57% increased in consequent with concentration raising. These results prime to conclude that water kefir could be promisor source of natural antioxidants with good potency in health developing.

  16. Augmented reality usage for prototyping speed up

    Directory of Open Access Journals (Sweden)

    Jiří Šťastný

    2011-01-01

    Full Text Available The integral part of production process in many companies is prototyping. Although, these companies commonly have high quality visualization tools (large screen projections, virtual reality, prototyping was never abandoned. There is a number of reasons. The most important is the possibility of model observation from any angle without any physical constraints and its haptic feedback. The interactivity of model adjustments is important as well. The direct work with the model allows the designers to focus on the creative process more than work with a computer. There is still a problem with a difficult adjustability of the model. More significant changes demand completely new prototype or at least longer time for its realization.The first part of the article describes our approach for solution of this problem by means of Augmented Reality. The merging of the real world model and digital objects allows streamline the work with the model and speed up the whole production phase significantly. The main advantage of augmented reality is the possibility of direct manipulation with the scene using a portable digital camera. Also adding digital objects into the scene could be done using identification markers placed on the surface of the model. Therefore it is not necessary to work with special input devices and lose the contact with the real world model. Adjustments are done directly on the model. The key problem of outlined solution is the ability of identification of an object within the camera picture and its replacement with the digital object. The second part of the article is focused especially on the identification of exact position and orientation of the marker within the picture. The identification marker is generalized into the triple of points which represents a general plane in space. There is discussed the space identification of these points and the description of representation of their position and orientation be means of transformation

  17. Under Persistent Assault: Understanding the Factors that Deteriorate Human Skin and Clinical Efficacy of Topical Antioxidants in Treating Aging Skin

    Directory of Open Access Journals (Sweden)

    Patricia K. Farris

    2015-11-01

    Full Text Available Recent studies contend that the skin is subject to far more damage than just ultraviolet (UV light, with infrared radiation and pollution now clearly demonstrated to degrade cutaneous tissue. While consumers continue to strive for new ways to augment the aesthetic appeal and improve the health of their skin, awareness regarding environmental insults and effective ways to protect the skin remains low. New advances in dermatologic science have exponentially increased the available information on the underlying mechanism of cutaneous damage and potential of topical antioxidants to treat aging skin. Combining antioxidants that can work through multiple pathways holds great potential for a cumulative and synergistic way to treat aging skin. Our goal is to provide a comprehensive review on environmental factors that damage human skin, discuss scientifically proven benefits of topical antioxidants, understand challenges of formulating and administering topical antioxidants, evaluate novel mechanisms of antioxidant activity, and suggest practical ways of integrating topical antioxidants with aesthetic procedures to complement clinical outcomes.

  18. Activation of antioxidant defenses in whole saliva by psychosocial stress is more manifested in young women than in young men.

    Directory of Open Access Journals (Sweden)

    Viktoriia Tsuber

    Full Text Available Psychosocial stress has been long known to have deleterious effects on health. Nevertheless, an exposure to moderate stressors enhances resilience and promotes health benefits. Male and female organisms differ in many aspects of health and disease. The aim of this study was to investigate antioxidant activity and oxidative damage in saliva in a psychosocial stress paradigm in men and women. Here, we show that an acute stressor of moderate strength augments antioxidant activity and decreases oxidative damage in whole saliva of young people. An examination stress caused a significant increase of catalase activity, accompanied by a decrease of levels of oxidized proteins. Levels of thiobarbituric acid-reacting substances did not increase at stress, indicating that lipid peroxidation was not activated. The stress-induced alterations were more manifested in young women compared to young men. Thus, antioxidant protective mechanisms are more activated by a moderate stressor in young women than in young men.

  19. The proper time for antioxidant consumption.

    Science.gov (United States)

    Beaulieu, Michaël; Schaefer, H Martin

    2014-04-10

    Consuming food rich in antioxidants may help organisms to increase their antioxidant defences and avoid oxidative damage. Under the hypothesis that organisms actively consume food for its antioxidant properties, they would need to do so in view of other physiological requirements, such as energy requirements. Here, we observed that Gouldian finches (Erythrura gouldiae) consumed most seeds rich in antioxidants in the middle of the day, while their consumption of staple seeds more profitable in energy intake (and poor in antioxidants) was maximal in the morning and the evening. This consumption of seeds rich in antioxidants in the middle of the day may be explicable (1) because birds took advantage of a time window associated with relaxed energy requirements to ingest antioxidant resources, or (2) because birds consumed antioxidant resources as a response to the highest antioxidant requirements in the middle of the day. If the latter hypothesis holds true, having the possibility to ingest antioxidants should be most beneficial in terms of oxidative balance in the middle of the day. Even though feeding on seeds rich in antioxidants improved Gouldian finches' overall antioxidant capacity, we did not detect any diurnal effect of antioxidant intake on plasma oxidative markers (as measured by the d-ROM and the OXY-adsorbent tests). This indicates that the diurnal pattern of antioxidant intake that we observed was most likely constrained by the high consumption of staple food to replenish or build up body reserves in the morning and in the evening, and not primarily determined by elevated antioxidant requirements in the middle of the day. Consequently, animals appear to have the possibility to increase antioxidant defences by selecting food rich in antioxidants, only when energetic constraints are relaxed. Copyright © 2014 Elsevier Inc. All rights reserved.

  20. Recent Development of Augmented Reality in Surgery: A Review

    Directory of Open Access Journals (Sweden)

    P. Vávra

    2017-01-01

    Full Text Available Introduction. The development augmented reality devices allow physicians to incorporate data visualization into diagnostic and treatment procedures to improve work efficiency, safety, and cost and to enhance surgical training. However, the awareness of possibilities of augmented reality is generally low. This review evaluates whether augmented reality can presently improve the results of surgical procedures. Methods. We performed a review of available literature dating from 2010 to November 2016 by searching PubMed and Scopus using the terms “augmented reality” and “surgery.” Results. The initial search yielded 808 studies. After removing duplicates and including only journal articles, a total of 417 studies were identified. By reading of abstracts, 91 relevant studies were chosen to be included. 11 references were gathered by cross-referencing. A total of 102 studies were included in this review. Conclusions. The present literature suggest an increasing interest of surgeons regarding employing augmented reality into surgery leading to improved safety and efficacy of surgical procedures. Many studies showed that the performance of newly devised augmented reality systems is comparable to traditional techniques. However, several problems need to be addressed before augmented reality is implemented into the routine practice.

  1. Adaptive multimodal interaction in mobile augmented reality: A conceptual framework

    Science.gov (United States)

    Abidin, Rimaniza Zainal; Arshad, Haslina; Shukri, Saidatul A'isyah Ahmad

    2017-10-01

    Recently, Augmented Reality (AR) is an emerging technology in many mobile applications. Mobile AR was defined as a medium for displaying information merged with the real world environment mapped with augmented reality surrounding in a single view. There are four main types of mobile augmented reality interfaces and one of them are multimodal interfaces. Multimodal interface processes two or more combined user input modes (such as speech, pen, touch, manual gesture, gaze, and head and body movements) in a coordinated manner with multimedia system output. In multimodal interface, many frameworks have been proposed to guide the designer to develop a multimodal applications including in augmented reality environment but there has been little work reviewing the framework of adaptive multimodal interface in mobile augmented reality. The main goal of this study is to propose a conceptual framework to illustrate the adaptive multimodal interface in mobile augmented reality. We reviewed several frameworks that have been proposed in the field of multimodal interfaces, adaptive interface and augmented reality. We analyzed the components in the previous frameworks and measure which can be applied in mobile devices. Our framework can be used as a guide for designers and developer to develop a mobile AR application with an adaptive multimodal interfaces.

  2. Recent Development of Augmented Reality in Surgery: A Review

    Science.gov (United States)

    Vávra, P.; Zonča, P.; Ihnát, P.; El-Gendi, A.

    2017-01-01

    Introduction The development augmented reality devices allow physicians to incorporate data visualization into diagnostic and treatment procedures to improve work efficiency, safety, and cost and to enhance surgical training. However, the awareness of possibilities of augmented reality is generally low. This review evaluates whether augmented reality can presently improve the results of surgical procedures. Methods We performed a review of available literature dating from 2010 to November 2016 by searching PubMed and Scopus using the terms “augmented reality” and “surgery.” Results. The initial search yielded 808 studies. After removing duplicates and including only journal articles, a total of 417 studies were identified. By reading of abstracts, 91 relevant studies were chosen to be included. 11 references were gathered by cross-referencing. A total of 102 studies were included in this review. Conclusions The present literature suggest an increasing interest of surgeons regarding employing augmented reality into surgery leading to improved safety and efficacy of surgical procedures. Many studies showed that the performance of newly devised augmented reality systems is comparable to traditional techniques. However, several problems need to be addressed before augmented reality is implemented into the routine practice.

  3. Recent Development of Augmented Reality in Surgery: A Review.

    Science.gov (United States)

    Vávra, P; Roman, J; Zonča, P; Ihnát, P; Němec, M; Kumar, J; Habib, N; El-Gendi, A

    2017-01-01

    The development augmented reality devices allow physicians to incorporate data visualization into diagnostic and treatment procedures to improve work efficiency, safety, and cost and to enhance surgical training. However, the awareness of possibilities of augmented reality is generally low. This review evaluates whether augmented reality can presently improve the results of surgical procedures. We performed a review of available literature dating from 2010 to November 2016 by searching PubMed and Scopus using the terms "augmented reality" and "surgery." Results. The initial search yielded 808 studies. After removing duplicates and including only journal articles, a total of 417 studies were identified. By reading of abstracts, 91 relevant studies were chosen to be included. 11 references were gathered by cross-referencing. A total of 102 studies were included in this review. The present literature suggest an increasing interest of surgeons regarding employing augmented reality into surgery leading to improved safety and efficacy of surgical procedures. Many studies showed that the performance of newly devised augmented reality systems is comparable to traditional techniques. However, several problems need to be addressed before augmented reality is implemented into the routine practice.

  4. Prototype Application of Portable Augmented Reality Technology for Enhancement of Space and Planetary Exploration Project

    Data.gov (United States)

    National Aeronautics and Space Administration — For this project, several different augmentation techniques for locating ground articles from distance through an augmented live view were investigated....

  5. Telerobotic control with stereoscopic augmented reality

    Science.gov (United States)

    Rastogi, Anu; Milgram, Paul; Drascic, David; Grodski, Julius J.

    1996-04-01

    Teleoperation in unstructured environments is conventionally restricted to direct manual control of the robot. Under such circumstances operator performance can be affected by inadequate visual feedback from the remote site, caused by, for example, limitations in the bandwidth of the communication channel. This paper introduces ARTEMIS (Augmented Reality TEleManipulation Interface System), a new display interface for enabling local teleoperation task simulation. An important feature of the interface is that the display can be generated in the absence of a model of the remote operating site. The display consists of a stereographical model of the robot overlaid on real stereovideo images from the remote site. This stereographical robot is used to simulate manipulation with respect to objects visible in the stereovideo image, following which sequences of robot control instructions can be transmitted to the remote site. In the present system, the update rate of video images can be very low, since continuous feedback is no longer needed for direct manual control of the robot. Several features of the system are presented and its advantages discussed, together with an illustrative example of a pick-and-place task.

  6. Augmenting painted architectures for communicating cultural heritage

    Directory of Open Access Journals (Sweden)

    Alberto Sdegno

    2015-07-01

    Full Text Available The paper presents a research under development at the University of Trieste to analyze a painted architecture by Paolo Veronese and to present the results using AR systems (Augmented Reality Systems. The canvas was painted in 1573 and it is now at the Gallerie dell’Accademia Museum in Venice. The aim of the research was to transform a two-dimensional work of art in a three dimensional one, allowing all the visitors of a museum to enter the space of the representation and perceive it in a more direct way. After the geometrical analysis of the picture, we started the digital restitution of the perspective references and proceed to model the virtual scene using Boolean primitives and applying all the textures to render the scene in a very realistic way. The further step was to convert the model into a dynamic form with AR algorithms and associate it with spatial references to allow users to do a virtual experience of it.

  7. Augmented Reality Marker Hiding with Texture Deformation.

    Science.gov (United States)

    Kawai, Norihiko; Sato, Tomokazu; Nakashima, Yuta; Yokoya, Naokazu

    2017-10-01

    Augmented reality (AR) marker hiding is a technique to visually remove AR markers in a real-time video stream. A conventional approach transforms a background image with a homography matrix calculated on the basis of a camera pose and overlays the transformed image on an AR marker region in a real-time frame, assuming that the AR marker is on a planar surface. However, this approach may cause discontinuities in textures around the boundary between the marker and its surrounding area when the planar surface assumption is not satisfied. This paper proposes a method for AR marker hiding without discontinuities around texture boundaries even under nonplanar background geometry without measuring it. For doing this, our method estimates the dense motion in the marker's background by analyzing the motion of sparse feature points around it, together with a smooth motion assumption, and deforms the background image according to it. Our experiments demonstrate the effectiveness of the proposed method in various environments with different background geometries and textures.

  8. Augmented Fish Health Monitoring, 1990 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Warren, James W.

    1990-08-15

    Augmented Fish Health Monitoring Contract AI79-87BP35585 was implemented on July 20, 1987. This report briefly describes third-year work being done to meet contract requirements for fish disease surveillance at Service facilities in the Columbia River basin and for histopathological support services provided to participating state agencies. It also summarizes the health status of fish reared at participating Service hatcheries and provides a summary of case history data for calendar year 1989. Items of note included severe disease losses to infectious hematopoietic necrosis (IHN) in summer steelhead trout in Idaho, the detection of IHN virus in juvenile spring chinook salmon at hatcheries on the lower Columbia River, and improved bacterial kidney disease (BKD) detection and adult assay by enzyme-linked immunosorbent assay (ELISA) technology at the Dworshak Fish Health Center. Complete diagnostic and inspection services were provided to 13 Columbia River Basin National Fish Hatcheries. Case history data was fully documented in a computerized data base for storage and analysis and is summarized herein. 2 refs., 1 fig., 4 tabs.

  9. Escape route simulator utilizing augmented reality

    Energy Technology Data Exchange (ETDEWEB)

    Mattos, Karen Salazar Ribeiro de; Mó, Antônio Carlos de A.; Santo, André Cotelli do E.; Silva, Marcio Henrique, E-mail: karensalazar.1190@gmail.com [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Centro Universitário Carioca (UniCarioca), Rio de Janeiro, RJ (Brazil)

    2017-07-01

    Due to increasing demand and interest in the interaction of technology platforms and integration of different types of systems and technologies, some tools are already providing practical ways to develop integrated applications. The tools explored by this article are Unity, a platform for game development, and Vuforia, an SDK, software development kit, for augmented reality creation. The coalition proposal of these resources is to create an intuitive escape route that can be used for the evacuation of buildings or open spaces in view of imminent danger, such as radiation leakage, and that can be accessed from a target available at the institution. It has also the intention of simulating situations that involve training of personnel in order to obtain methods that allow to save financial resources, and even to avoid that those who are involved are exposed to risks unnecessarily. The simulator is expected to help design, test, and improve ways to maintain the physical integrity of the facility and provide end users with a better sense of immersion and attractiveness. (author)

  10. Spacecraft 3D Augmented Reality Mobile App

    Science.gov (United States)

    Hussey, Kevin J.; Doronila, Paul R.; Kumanchik, Brian E.; Chan, Evan G.; Ellison, Douglas J.; Boeck, Andrea; Moore, Justin M.

    2013-01-01

    The Spacecraft 3D application allows users to learn about and interact with iconic NASA missions in a new and immersive way using common mobile devices. Using Augmented Reality (AR) techniques to project 3D renditions of the mission spacecraft into real-world surroundings, users can interact with and learn about Curiosity, GRAIL, Cassini, and Voyager. Additional updates on future missions, animations, and information will be ongoing. Using a printed AR Target and camera on a mobile device, users can get up close with these robotic explorers, see how some move, and learn about these engineering feats, which are used to expand knowledge and understanding about space. The software receives input from the mobile device's camera to recognize the presence of an AR marker in the camera's field of view. It then displays a 3D rendition of the selected spacecraft in the user's physical surroundings, on the mobile device's screen, while it tracks the device's movement in relation to the physical position of the spacecraft's 3D image on the AR marker.

  11. Evaluating User Experience of Augmented Reality Eyeglasses.

    Science.gov (United States)

    Gamberini, Luciano; Orso, Valeria; Beretta, Andrea; Jacucci, Giulio; Spagnolli, Anna; Rimondi, Romina

    2015-01-01

    Augmented reality based applications have been experimented with in various contexts. Typically, the interaction is supported by handled devices, which, in specific scenarios, may hinder the interaction and spoil the experience of use, as the user is forced to hold the device and to keep her eyes on it at all times. The recent launch on the market of light-weight, unobtrusive head-mounted displays may change this circumstance. Nevertheless, investigations are needed to understand if such head-worn devices effectively outperform handheld devices in terms of comfort and pleasant experience of use. Here we present two experiments aimed at assessing the comfort of wearing a head-worn, see-through AR viewer in both a controlled and a natural setting. Besides the comfort of wearing the device, aspects related to the user experience were also investigated in the field evaluation. Our findings suggest that the head-mounted display examined is comfortable to wear regardless of the context of use. Interestingly in the field trails, participants did not express concern for the impression they would have made on other people and the experience of use was overall pleasant. Possible issues related to visual fatigue emerged.

  12. Opportunistic tangible user interfaces for augmented reality.

    Science.gov (United States)

    Henderson, Steven; Feiner, Steven

    2010-01-01

    Opportunistic Controls are a class of user interaction techniques that we have developed for augmented reality (AR) applications to support gesturing on, and receiving feedback from, otherwise unused affordances already present in the domain environment. By leveraging characteristics of these affordances to provide passive haptics that ease gesture input, Opportunistic Controls simplify gesture recognition, and provide tangible feedback to the user. In this approach, 3D widgets are tightly coupled with affordances to provide visual feedback and hints about the functionality of the control. For example, a set of buttons can be mapped to existing tactile features on domain objects. We describe examples of Opportunistic Controls that we have designed and implemented using optical marker tracking, combined with appearance-based gesture recognition. We present the results of two user studies. In the first, participants performed a simulated maintenance inspection of an aircraft engine using a set of virtual buttons implemented both as Opportunistic Controls and using simpler passive haptics. Opportunistic Controls allowed participants to complete their tasks significantly faster and were preferred over the baseline technique. In the second, participants proposed and demonstrated user interfaces incorporating Opportunistic Controls for two domains, allowing us to gain additional insights into how user interfaces featuring Opportunistic Controls might be designed.

  13. HUNT: Scavenger Hunt with Augmented Reality

    Directory of Open Access Journals (Sweden)

    Yan Lu

    2015-04-01

    Full Text Available This project shows a creative approach to the familiar scavenger hunt game. It involved the implementation of an iPhone application, HUNT, with Augmented Reality (AR capability for the users to play the game as well as an administrative website that game organizers can use to create and make available games for users to play. Using the HUNT mobile app, users will first make a selection from a list of games, and they will then be shown a list of objects that they must seek. Once the user finds a correct object and scans it with the built-in camera on the smartphone, the application will attempt to verify if it is the correct object and then display associated multi-media AR content that may include images and videos overlaid on top of real world views. HUNT not only provides entertaining activities within an environment that players can explore, but the AR contents can serve as an educational tool. The project is designed to increase user involvement by using a familiar and enjoyable game as a basis and adding an educational dimension by incorporating AR technology and engaging and interactive multimedia to provide users with facts about the objects that they have located

  14. Thrust Augmentation with Mixer/Ejector Systems

    Science.gov (United States)

    Presz, Walter M., Jr.; Reynolds, Gary; Hunter, Craig

    2002-01-01

    Older commercial aircraft often exceed FAA (Federal Aviation Administration) sideline noise regulations. The major problem is the jet noise associated with the high exhaust velocities of the low bypass ratio engines on such aircraft. Mixer/ejector exhaust systems can provide a simple means of reducing the jet noise on these aircraft by mixing cool ambient air with the high velocity engine gases before they are exhausted to ambient. This paper presents new information on thrust performance predictions, and thrust augmentation capabilities of mixer/ejectors. Results are presented from the recent development program of the patented Alternating Lobe Mixer Ejector Concept (ALMEC) suppressor system for the Gulfstream GII, GIIB and GIII aircraft. Mixer/ejector performance procedures are presented which include classical control volume analyses, compound compressible flow theory, lobed nozzle loss correlations and state of the art computational fluid dynamic predictions. The mixer/ejector thrust predictions are compared to subscale wind tunnel test model data and actual aircraft flight test measurements. The results demonstrate that a properly designed mixer/ejector noise suppressor can increase effective engine bypass ratio and generate large thrust gains at takeoff conditions with little or no thrust loss at cruise conditions. The cruise performance obtained for such noise suppressor systems is shown to be a strong function of installation effects on the aircraft.

  15. Rotor Design for Diffuser Augmented Wind Turbines

    Directory of Open Access Journals (Sweden)

    Søren Hjort

    2015-09-01

    Full Text Available Diffuser augmented wind turbines (DAWTs can increase mass flow through the rotor substantially, but have often failed to fulfill expectations. We address high-performance diffusers, and investigate the design requirements for a DAWT rotor to efficiently convert the available energy to shaft energy. Several factors can induce wake stall scenarios causing significant energy loss. The causality between these stall mechanisms and earlier DAWT failures is discussed. First, a swirled actuator disk CFD code is validated through comparison with results from a far wake swirl corrected blade-element momentum (BEM model, and horizontal-axis wind turbine (HAWT reference results. Then, power efficiency versus thrust is computed with the swirled actuator disk (AD code for low and high values of tip-speed ratios (TSR, for different centerbodies, and for different spanwise rotor thrust loading distributions. Three different configurations are studied: The bare propeller HAWT, the classical DAWT, and the high-performance multi-element DAWT. In total nearly 400 high-resolution AD runs are generated. These results are presented and discussed. It is concluded that dedicated DAWT rotors can successfully convert the available energy to shaft energy, provided the identified design requirements for swirl and axial loading distributions are satisfied.

  16. RAID: a relation-augmented image descriptor

    KAUST Repository

    Guerrero, Paul

    2016-07-11

    As humans, we regularly interpret scenes based on how objects are related, rather than based on the objects themselves. For example, we see a person riding an object X or a plank bridging two objects. Current methods provide limited support to search for content based on such relations. We present RAID, a relation-augmented image descriptor that supports queries based on inter-region relations. The key idea of our descriptor is to encode region-to-region relations as the spatial distribution of point-to-region relationships between two image regions. RAID allows sketch-based retrieval and requires minimal training data, thus making it suited even for querying uncommon relations. We evaluate the proposed descriptor by querying into large image databases and successfully extract nontrivial images demonstrating complex inter-region relations, which are easily missed or erroneously classified by existing methods. We assess the robustness of RAID on multiple datasets even when the region segmentation is computed automatically or very noisy.

  17. Augmented Fish Monitoring, 1988 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Michak, Patty

    1989-05-01

    Since 1986 Washington department of Fisheries (WDF) has participated in the Columbia Basin Augmented Fish Health Monitoring Project. This project provides a standardized level of fish health information from all Agencies rearing fish in the Columbia Basin. WDF has actively participated in this project, and completed its second year of fish health monitoring, data collection and pathogen inspection during 1988. This report will present data collected from January 1, 1988 to December 31, 1988 and will compare sampling results from 1987 and 1988. The analysis will be divided in two sections: adult analysis and juvenile analysis. The adult analysis will include results from screening at spawning for viral pathogens and bacterial kidney disease (BKD), and evaluation of causes of pre-spawning loss. The juvenile analysis will include pre-release examination results, mid-term rearing exam results and evaluation of the Organosomatic Analysis completed on index stocks. Additionally, highlights from monthly monitoring exams will identify any significant and unusual findings from the routine exams completed in 1988. 6 refs., 8 figs., 14 tabs.

  18. Augmented Fish Health Monitoring, 1989 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Michak, Patty

    1990-05-01

    Since 1986 Washington Department of Fisheries (WDF) has participated in the Columbia Basin Augmented Fish Health Monitoring Project, funded by Bonneville Power Administration (BPA). This interagency project was developed to provide a standardized level of fish health information from all Agencies rearing fish in the Columbia Basin. Agencies involved in the project are: WDF, Washington Department of Wildlife, Oregon Fish and Wildlife, Idaho Fish and Game, and the US Fish and Wildlife Service. WDF has actively participated in this project, and completed its third year of fish health monitoring, data collection and pathogen inspection during 1989. This report will present data collected from January 1, 1989 to December 31, 1989 and will compare sampling results from screening at spawning for viral pathogens and bacterial kidney disease (BKD), and evaluation of causes of pre-spawning loss. The juvenile analysis will include pre-release examination results, mid-term rearing exam results and evaluation of the Organosomatic Analysis completed on stocks. 2 refs., 4 figs., 15 tabs.

  19. FEATURES OF USING AUGMENTED REALITY TECHNOLOGY TO SUPPORT EDUCATIONAL PROCESSES

    Directory of Open Access Journals (Sweden)

    Yury A. Kravchenko

    2014-01-01

    Full Text Available The paper discusses the concept and technology of augmented reality, the rationale given the relevance and timeliness of its use to support educational processes. Paper is a survey and study of the possibility of using augmented reality technology in education. Architecture is proposed and constructed algorithms of the software system management QR-codes media objects. An overview of the features and uses of augmented reality technology to support educational processes is displayed, as an option of a new form of visual demonstration of complex objects, models and processes. 

  20. Initial results from an online breast augmentation survey.

    Science.gov (United States)

    Young, V Leroy; Watson, Marla E; Boswell, C B; Centeno, Robert F

    2004-01-01

    Data have been lacking to answer many questions raised in the clinical literature and by the US Food and Drug Administration with regard to patient satisfaction with breast implants, informed consent, the impact of augmentation on quality of life, repeat operations, and other issues related to breast augmentation. The authors conducted an online survey of women with and without breast implants to collect data on key issues related to breast augmentation. A survey including 177 questions was posted on the Web site www.implantinfo.com for 6 months, from August 2001 to February 2002. The survey was aimed at women who had undergone augmentation and those who were considering augmentation but had not yet undergone surgery. The raw data were analyzed by Data Harbor (Chicago, IL), an independent data management and technology development company with experience in managing large, complex medical databases. The survey was completed by 4011 women, including 2273 who had received breast implants and 1738 who were considering augmentation. Among the key findings: More than half of the women who had undergone breast augmentation and those who were considering the procedure thought about the decision for at least 3 years before proceeding. Most women who underwent breast augmentation (88%) were satisfied with the results, and 93% said they would recommend the procedure to friends or family members. Nearly all women who received implants thought the surgery improved their overall appearance (92%) and self-confidence (82%) but said it did not result in significant changes in their marriage/dating activities, careers, or social lives. At least 92% said their surgeons had answered their questions and listened to their concerns, and more than 75% said they remembered being informed of the risks of surgery. The percentage of women with breast pain was greater among women with implants than among those without. However, other physical symptoms, such as those associated with

  1. Research on Design of MUH Attitude Stability Augmentation Control System

    Science.gov (United States)

    Fan, Shigang

    2017-09-01

    Attitude stability augmentation control system with a lower cost need to be designed so that MUH (Mini Unmanned Helicopter) can adapt to different types of geographic environment and fly steadily although the weather may be bad. Attitude feedback was calculated mainly by filtering estimation within attitude acquisition module in this system. Stability augmentation can be improved mainly by PI. This paper will depict running principle and designing process of MUH attitude stability augmentation control system and algorithm that is considered as an important part in this system.

  2. Intravenous alpha-1 antitrypsin augmentation therapy: systematic review

    DEFF Research Database (Denmark)

    Gøtzsche, Peter C; Johansen, Helle Krogh

    2010-01-01

    We reviewed the benefits and harms of augmentation therapy with alpha-1 antitrypsin in patients with alpha-1 antitrypsin deficiency and lung disease. We searched for randomised trials comparing augmentation therapy with placebo or no treatment in PubMed and ClinicalTrials (7 January 2010). Two...... (difference 1.14 g/l; 95% confidence interval 0.14 to 2.14; p = 0.03) over the total course of the trials. Augmentation therapy with alpha-1 antitrypsin cannot be recommended in view of the lack of evidence of clinical benefit and the cost of treatment....

  3. Physical hypermedia: augmenting physical material with hypermedia structures

    DEFF Research Database (Denmark)

    Grønbæk, Kaj; Ørbæk, Peter; Kristensen, Jannie Friis

    2003-01-01

    augmented reality and hypermedia to support organization of mixtures of digital and physical materials. Our prototype of a physical hypermedia system is running on an augmented architect's desk and digital walls utilizing Radio Frequency Identifier (RFID) tags as well as visual tags tracked by cameras...... and linking of physical material. In addition, we utilize visual ARToolKit tags for linking and navigating 3D models on a physical desk. Our primary application domain is architecture and design, and so we discuss the use of augmented collectional artifacts primarily for this domain....

  4. Spatial augmented reality merging real and virtual worlds

    CERN Document Server

    Bimber, Oliver

    2005-01-01

    Like virtual reality, augmented reality is becoming an emerging platform in new application areas for museums, edutainment, home entertainment, research, industry, and the art communities using novel approaches which have taken augmented reality beyond traditional eye-worn or hand-held displays. In this book, the authors discuss spatial augmented reality approaches that exploit optical elements, video projectors, holograms, radio frequency tags, and tracking technology, as well as interactive rendering algorithms and calibration techniques in order to embed synthetic supplements into the real

  5. Intravenous alpha-1 antitrypsin augmentation therapy: systematic review

    DEFF Research Database (Denmark)

    Gøtzsche, Peter C; Johansen, Helle Krogh

    2010-01-01

    We reviewed the benefits and harms of augmentation therapy with alpha-1 antitrypsin in patients with alpha-1 antitrypsin deficiency and lung disease. We searched for randomised trials comparing augmentation therapy with placebo or no treatment in PubMed and ClinicalTrials (7 January 2010). Two tr...... (difference 1.14 g/l; 95% confidence interval 0.14 to 2.14; p = 0.03) over the total course of the trials. Augmentation therapy with alpha-1 antitrypsin cannot be recommended in view of the lack of evidence of clinical benefit and the cost of treatment....

  6. Augmented reality as a design tool for mobile interfaces

    DEFF Research Database (Denmark)

    Bertelsen, Olav Wedege; Nielsen, Christina

    2000-01-01

    applications derived from the classification of augmented reality interfaces. The focus on physical interaction with objects of work and with the mobile device provides us with a range of interaction styles, based on e.g. gestures and manipulation of objects. Furthermore, issues of transparency and directness......This paper challenges user interface paradigms for mobile devices, by using the technical classification of augmented reality interfaces as a thinking tool to develop ideas for interaction with mobile devices. The paper presents future work scenarios from a wastewater treatment plant embodying PDA...... are addressed. The future scenarios indicate that the concepts of augmented reality support solving context problems in mobile design....

  7. Primiparas with or without oxytocin augmentation: a prospective descriptive study.

    Science.gov (United States)

    Svärdby, Karin; Nordström, Lennart; Sellström, Eva

    2007-01-01

    The aim of this study was to determine during which phase of delivery augmentation is started when used and to establish any correlation that might exist between the oxytocin infusion and the evaluations by primiparas themselves of their labour pain, strength of contractions and fatigue. In addition, we wanted to determine any differences in duration between labour with and labour without augmentation. We finally wanted to measure the incidence of instrumental deliveries, perineal trauma and neonatal outcome among the augmented vs. the non-augmented groups. The most commonly diagnosed complication in primiparas is ineffective contractions or protracted labour, otherwise known as dystocia, which literally means arrested or prolonged labour. Different treatments have been tried during the active phase of labour as well as the second stage of labour. The most common treatment today is amniotomy, often used in combination with an intravenous oxytocin infusion. The study was conducted at the hospital in Ostersund in central Sweden from August 1998 to September 1999. Consecutive primiparas giving birth at full-term were selected to the study. The inclusion criteria were an uncomplicated pregnancy and a spontaneous single delivery with head presentation. The total number of participants was 164. The results showed that 50 of 164 primiparas needed no augmentation, while 88 were augmented during the active phase and 26 during the second stage of labour. The duration of the active phase [median (md) 4 hours 45 minutes, 6 hours 49 minutes and 6 hours 20 minutes respectively for the different groups, P = 0.03], the time between full dilation of the cervix and the start of the second stage (md 20 minutes, 30 minutes and 60 minutes respectively, P = 0.012) and the duration of the second stage of labour (md 40 minutes, 44 minutes and 60 minutes respectively, P = 0.04) were significantly longer in the augmented groups. Operative deliveries, too, were more frequent in the augmented

  8. Introduction to Mobile Augmented Reality Development in Unity

    Directory of Open Access Journals (Sweden)

    Jacob W. Greene

    2016-07-01

    Full Text Available This lesson serves as an introduction to creating mobile augmented reality applications. Augmented reality (AR can be defined as the overlaying of digital content (images, video, text, sound, etc. onto physical objects or locations, and it is typically experienced by looking through the camera lens of an electronic device such as a smartphone, tablet, or optical head-mounted display (e.g. Microsoft Hololens. Although AR is a cutting-edge, complex technology, there are a number of user-friendly platforms that allow people with no previous coding experience to create compelling augmented reality experiences.

  9. Antioxidant and antimicrobial activities of polyphenols from ...

    African Journals Online (AJOL)

    USER

    2010-05-17

    May 17, 2010 ... The antioxidant properties and antimicrobial potential of three ethnomedicinal plants, (Momordica charanta, Senna alata and Nauclea lafifolia) extracted with acetone were investigated. Polyphenols from the medicinal plants were screened for their antioxidant and antimicrobial activities against pathogenic.

  10. Antioxidant and antibacterial activities of polyphenols from ...

    African Journals Online (AJOL)

    Polyphenols from four medicinal plants of Burkina Faso, Combretum micranthum, Khaya senegalensis, Pterocarpus erinaceus and Sida acuta, were screened for their antioxidant and antimicrobial activities against pathogenic bacteria. The medicinal plants displayed different polyphenols contents and antioxidant activities.

  11. Physicochemical and antioxidant properties of Algerian honey

    National Research Council Canada - National Science Library

    Khalil, Ibrahim; Moniruzzaman, Mohammed; Boukraâ, Laïd; Benhanifia, Mokhtar; Islam, Asiful; Islam, Nazmul; Sulaiman, Siti Amrah; Gan, Siew Hua

    2012-01-01

    ...), color intensity, total sugar and sucrose content were measured. Several biochemical and antioxidant tests were performed to determine the antioxidant properties of the honey samples. The mean pH was 3.84...

  12. Antioxidant food supplements in human health

    National Research Council Canada - National Science Library

    Hiramatsu, Midori; Packer, Lester; Yoshikawa, Toshikazu

    1999-01-01

    ... of many of nature's antioxidant substances; grapes: starting source for red wine production; rich in antioxidants; onions: rich source of the bioflavonoid quercetin. This book is printed on acid-...

  13. Proximate and Phytochemical composition and antioxidant ...

    African Journals Online (AJOL)

    Conclusion: Indigenous landraces of Omani fenugreek seeds are a rich source of protein, dietary fiber, and many important bioactive components, which were found to be significantly correlatedwith its antioxidant properties. Keywords: Omani fenugreek, landraces, phytochemical composition, antioxidant properties.

  14. Physicochemical and antioxidant properties of black garlic

    National Research Council Canada - National Science Library

    Choi, Il Sook; Cha, Han Sam; Lee, Young Soon

    2014-01-01

    .... To clarify how BG changes during the 35 day aging period, the physicochemical characteristics, antioxidant contents, and antioxidant activities were evaluated under controlled conditions of 70 °C and 90% relative humidity...

  15. Antioxidant activities and phenolics profiling of different parts of Carica papaya by LCMS-MS.

    Science.gov (United States)

    Zunjar, V; Mammen, D; Trivedi, B M

    2015-01-01

    This article deals with the comparison of the antioxidant activity of aqueous extracts of various parts of Carica papaya L. The evaluation of total phenolic content and total flavonoid content revealed high antioxidant potential of the seeds and fruits. The free radical-scavenging potential of the aqueous extracts indicated the seeds to have better DPPH-scavenging activity than fruits. The results were augmented by the FRAP activity as well. The phenolics present in the extracts were separated and identified as 5-hydroxy feruloyl quinic acid, acetyl p-coumaryl quinic acid, quercetin-3-O-rhamnoside, syringic acid hexoside, 5-hydroxy caffeic quinic acid, peonidin-3-O-glucoside, sinapic acid-O-hexoside, cyaniding-3-O-glucose and methyl feruloyl glycoside by LCMS-MS technique.

  16. Total dietary antioxidant capacity, individual antioxidant intake and breast cancer risk: The Rotterdam study

    NARCIS (Netherlands)

    Pantavos, A.; Ruiter, R.; Feskens, E.J.M.; Keyser, de C.E.; Hofman, A.; Stricker, B.H.C.; Franco, O.H.; Kiefte-de Jong, J.C.

    2015-01-01

    Some studies suggest a favorable role of antioxidants on breast cancer risk but this is still inconclusive. The aim of this study was to assess whether overall dietary antioxidant capacity, as assessed by dietary ferric reducing antioxidant potential (FRAP), and individual dietary antioxidant intake

  17. Antioxidant properties of catechins: Comparison with other antioxidants.

    Science.gov (United States)

    Grzesik, Michalina; Naparło, Katarzyna; Bartosz, Grzegorz; Sadowska-Bartosz, Izabela

    2018-02-15

    Antioxidant properties of five catechins and five other flavonoids were compared with several other natural and synthetic compounds and related to glutathione and ascorbate as key endogenous antioxidants in several in vitro tests and assays involving erythrocytes. Catechins showed the highest ABTS-scavenging capacity, the highest stoichiometry of Fe3+ reduction in the FRAP assay and belonged to the most efficient compounds in protection against SIN-1 induced oxidation of dihydrorhodamine 123, AAPH-induced fluorescein bleaching and hypochlorite-induced fluorescein bleaching. Glutathione and ascorbate were less effective. (+)-catechin and (-)-epicatechin were the most effective compounds in protection against AAPH-induced erythrocyte hemolysis while (-)-epicatechin gallate, (-)-epigallocatechin gallate and (-)-epigallocatechin protected at lowest concentrations against hypochlorite-induced hemolysis. Catechins [(-)-epigallocatechin gallate and (-)-epicatechin gallate)] were most efficient in the inhibition of AAPH-induced oxidation of 2'7'-dichlorodihydroflurescein contained inside erythrocytes. Excellent antioxidant properties of catechins and other flavonoids make them ideal candidates for nanoformulations to be used in antioxidant therapy. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. Antiradical and antioxidant activities of new bio-antioxidants.

    Science.gov (United States)

    Kancheva, V D; Saso, L; Angelova, S E; Foti, M C; Slavova-Kasakova, A; Daquino, C; Enchev, V; Firuzi, O; Nechev, J

    2012-02-01

    Antioxidants could be promising agents for management of oxidative stress-related diseases. New biologically active compounds, belonging to a rare class of natural lignans with antiangiogenic, antitumoral and DNA intercalating properties, have been recently synthesized. These compounds are benzo[kl]xanthene lignans (1,2) and dihydrobenzofuran neolignans (3,4). The radical scavenging and chain-breaking antioxidant activities of compounds 1-4 were studied by applying different methods: radical scavenging activity by DPPH rapid test, chain-breaking antioxidant activity and quantum chemical calculations. All studied compounds were found to be active as DPPH scavengers but reaction time with DPPH and compounds' concentrations influenced deeply the evaluation. The highest values of radical scavenging activity (%RSAmax) and largest rate constants for reaction with DPPH were obtained for compounds 2 and 3. Comparison of %RSAmax with that of standard antioxidants DL-α-tocopherol (TOH), caffeic acid (CA) and butylated hydroxyl toluene (BHT) give the following new order of %RSA max: TOH (61.1%) > CA (58.6%) > 3 (36.3%) > 2 (28.1%) > 4 (6.7%) > 1 (3.6%) = BHT (3.6%). Chain-breaking antioxidant activities of individual compounds (0.1-1.0 mM) and of their equimolar binary mixtures (0.1 mM) with TOH were determined from the kinetic curves of lipid autoxidation at 80 °C. On the basis of a comparable kinetic analysis with standard antioxidants a new order of the antioxidant efficiency (i.e., protection factor, PF) of compounds 1-4 were obtained: 2 (7.2) ≥ TOH (7.0) ≥ CA (6.7) > 1 (3.1) > 3 (2.2) > ferulic acid FA (1.5) > 4 (0.6); and of the antioxidant reactivity (i.e. inhibition degree, ID): 2 (44.0) > TOH (18.7) > CA (9.3) > 1 (8.4) > 3 (2.8) > FA (1.0) > 4 (0.9). The important role of the catecholic structure in these compounds, which is responsible for the high chain-breaking antioxidant activity, is discussed and a reaction

  19. Novel Augmentation Strategies in Major Depression.

    Science.gov (United States)

    Martiny, Klaus

    2017-04-01

    Hypothesis The hypotheses of all the four included studies share the common idea that it is possible to augment the effect of antidepressant drug treatment by applying different interventions and with each intervention attain a clinically meaningful better effect compared to a control condition, and with minor side effects, thus improving the short- and medium-term outcome in major depression. Procedures Study design The basic study design has been the double blind randomised controlled trial (RCT). In the light therapy study, all patients were treated with sertraline for the whole of the study duration. In the first five weeks of the study, patients were randomised to treatment with either 60 minutes of bright white or 30 minutes of dim red light (sham condition). In the four weeks follow-up period, patients were treated with sertraline alone. In the Pindolol study, all patients were treated with venlafaxine and randomised to augmentation with either active or placebo matching pindolol tablets. In the PEMF study patients were continued on ongoing medication and randomised to augmentation with active or inactive (sham) 30 minutes daily PEMF treatment on weekdays. In the Chronos study all patients were treated with duloxetine and randomized to either a combination of three wake therapies with daily bright light treatment and sleep time stabilisation (wake group) or to daily exercise of minimum 30 minutes as an active control intervention (exercise group). The Chronos study was divided into: (1) a one-week run-in phase where duloxetine were started (and continued for the whole 29 week study period), (2) a one-week inpatient intervention phase where patient in the wake group did three wake therapies (sleep abstinence for the whole night and the following day until evening) in combination with daily light therapy and guidance on sleep time stabilisation and patients in the exercise group started a daily exercise program, (3) a seven week continuation phase where

  20. Antioxidant status in canine cancer patients

    OpenAIRE

    Plavec Tanja; Nemec-Svete Alenka; Butinar J.; Tozon Nataša; Prezelj Marija; Kandel Bettina; Kessler M

    2008-01-01

    The present study was conducted to investigate the antioxidant status in canine cancer patients. Patients with multicentric lymphoma, oral fibrosarcoma, mast cell tumor, malignant melanoma, appendicular osteosarcoma, nasal tumors and peripheral ameloblastoma were selected. Each group consisted of 6 patients. Total antioxidant capacity (TAC) and enzyme antioxidants: glutathione peroxidase (GPX), catalase (CAT) and superoxide dismutase (SOD) were measured in serum and whole blood, respectively,...

  1. Analysis of Two Methods to Evaluate Antioxidants

    Science.gov (United States)

    Tomasina, Florencia; Carabio, Claudio; Celano, Laura; Thomson, Leonor

    2012-01-01

    This exercise is intended to introduce undergraduate biochemistry students to the analysis of antioxidants as a biotechnological tool. In addition, some statistical resources will also be used and discussed. Antioxidants play an important metabolic role, preventing oxidative stress-mediated cell and tissue injury. Knowing the antioxidant content…

  2. 21 CFR 181.24 - Antioxidants.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 3 2010-04-01 2009-04-01 true Antioxidants. 181.24 Section 181.24 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN... Antioxidants. Substances classified as antioxidants, when migrating from food-packaging material (limit of...

  3. Antioxidants in bakery products: a review.

    Science.gov (United States)

    Nanditha, B; Prabhasankar, P

    2009-01-01

    Fats impart taste and texture to the product but it is susceptible to oxidation leading to the development of rancidity and off-flavor. Since ancient times it has been in practice to use antioxidants in foods. Discovery of synthetic antioxidants has revolutionized the use of antioxidants in food. The effect of these antioxidants in bakery products were reviewed and found to be effective in enhancing the shelf life. Animal experimental studies have shown that some of the synthetic antioxidants had toxigenic, mutagenic, and carcinogenic effects. Hence there is an increasing demand for the use of natural antioxidants in foods, especially in bakery products. Some of the natural antioxidants such as alpha-tocopherol, beta-carotene, and ascorbic acid were already used in bakery products. These natural antioxidants are found to be effective in enhancing the shelf life of bakery products but not to the extent of synthetic antioxidants. Baking processing steps may lower the antioxidative activity but techniques such as encapsulation of antioxidants can retain their activity. Antioxidative activity of the plant extracts such as garcinia, curcumin, vanillins, and mint were reviewed but studies on their role in bakery products were limited or very few. Hence there is a wide scope for study under this direction in depth.

  4. Comparative Antioxidant, Antiproliferative and Apoptotic Effects of ...

    African Journals Online (AJOL)

    Purpose: To determine and compare the antioxidant, antiproliferative and apoptotic effects of leaf infusions of Ilex laurina and Ilex paraguariensis in colon cancer cells. Methods: Antioxidant activity was determined by ORAC (Oxygen Radical Absorbance Capacity) and FRAP (Ferric Reducing Antioxidant Power). Cytotoxic ...

  5. Phytochemical constituents and antioxidant properties of acetone ...

    African Journals Online (AJOL)

    Phytochemical constituents and antioxidant properties of acetone extract of Cleome gynandra (L.) growing in the Eastern Cape, South Africa. ... Conclusion: C. gynandra possesses high secondary metabolites which accounts for its strong antioxidant ability thus justifying its use as natural occurring antioxidants in folkloric ...

  6. Preliminary investigations of antioxidation of dihydromyricetin in ...

    Indian Academy of Sciences (India)

    The results showed that DMY was more efficient than the synthetical antioxidant. The high antioxidant activity of DMY is attributed to the special chemical structure, including the quantity and positions of the hydroxy groups in the molecule. DMY was harmless and highly effective to be a good natural antioxidant.

  7. Autogenous femoral head as grafting material for mandibular augmentation

    NARCIS (Netherlands)

    Vos, M. D.; Raghoebar, G. M.; van der Wal, J. E.; Kalk, W. W. I.; Vissink, A.

    2009-01-01

    Bone grafting is commonly used for augmentation of the atrophic edentulous maxilla and mandible. Although bone substitutes and allogeneic frozen bone grafts have been applied successfully, fresh autogenous bone grafts remain the 'gold standard' in maxillofacial reconstructive surgery. A disadvantage

  8. Aircraft Control Augmentation and Health Monitoring Using FADS Technology Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This Phase I research proposal is aimed at demonstrating the feasibility of an innovative architecture comprising control augmentation and on-line health monitoring...

  9. Rhinoplasty and the nasal SMAS augmentation graft: advantages and indications.

    Science.gov (United States)

    Davis, Richard E; Wayne, Ivan

    2004-01-01

    We evaluated the nasal superficial musculoaponeurotic system (SMAS) as an autologous augmentation graft material in the thick-skinned patient undergoing cosmetic rhinoplasty using a retrospective review. Representative case reports demonstrated preliminary long-term results after augmentation with the nasal SMAS graft in an academic rhinoplasty practice. En bloc excision of the nasal SMAS in thick-skinned patients produced uniformly favorable improvements in nasal tip definition without adverse sequelae. Moreover, in 10 patients, the harvested material was also used for volume augmentation at various adjacent nasal sites, including the radix, nasal sidewall, and nasal dorsum. Long-term follow-up ranging from 1 to 3 years suggests stable volume augmentation in this initial patient series. No donor morbidity was observed in properly selected patients, and enhancements in nasal tip definition were uniformly favorable. Additional studies are needed to more accurately characterize long-term nasal SMAS graft survival in all patients.

  10. Effectiveness of plate augmentation for femoral shaft nonunion after nailing

    Directory of Open Access Journals (Sweden)

    Chin-Jung Lin

    2012-08-01

    Conclusion: Plate augmentation with retention of the nail with autologous bone grafting may be an effective and reliable alternative in treating nonunion of the femoral shaft fracture after open reduction and internal fixation with intramedullary nail.

  11. Cortical excitability changes following grasping exercise augmented with electrical stimulation

    DEFF Research Database (Denmark)

    Barsi, Gergely Istvan; Popovic, Dejan B.; Tarkka, Ina M.

    2008-01-01

    ) functional electrical stimulation (FES) of the finger flexors and extensors, (2) voluntary movement (VOL) with sensory stimulation, and (3) therapeutic FES (TFES) where the electrical stimulation augmented voluntary activation. TFES training produced a significant increase in MEP magnitude throughout...

  12. How Augmented Reality Enables Conceptual Understanding of Challenging Science Content

    National Research Council Canada - National Science Library

    Susan Yoon; Emma Anderson; Joyce Lin; Karen Elinich

    2017-01-01

    .... In this study we hypothesize that students acquire a more accurate understanding of the Bernoulli’s principle, a challenging science concept, by interacting with an augmented reality (AR) device...

  13. Die Welt als Spielfeld: Mobile Serious Games mit Augmented Reality

    NARCIS (Netherlands)

    Klemke, Roland; Schneider, Jan; Happe, Sven; Bockelmann, Timo; Börner, Dirk; Specht, Marcus

    2014-01-01

    Technological innovations enable us to connect computer games with the environment they are played in: augmented reality games take the world as their playground. In this talk, the use of such technologies for mobile serious games is explored.

  14. Augmented Reality a Review on Technology and Applications

    Science.gov (United States)

    Petruse, Radu Emanuil; Bondrea, Ioan

    2014-11-01

    We present in this paper an overview of the concepts and potential industrial Augmented Reality applications that can be very efficient. We also present the basic technological requirements for an AR system

  15. Review and analysis of augmented reality literature for construction industry

    National Research Council Canada - National Science Library

    Rankohi, Sara; Waugh, Lloyd

    2013-01-01

    Research has identified various beneficial capabilities for augmented reality technologies in the AEC industry such as virtual site visits, comparing as-built and as-planned status of projects, pre...

  16. Human Performance Assessments when Using Augmented Reality for Navigation

    National Research Council Canada - National Science Library

    Goldiez, Brian F; Saptoka, Nabin; Aedunuthula, Prashanth

    2006-01-01

    Human performance executing search and rescue type of navigation is one area that can benefit from augmented reality technology when the proper computer generated information is added to a real scene...

  17. Augmented reality three-dimensional display with light field fusion

    National Research Council Canada - National Science Library

    Xie, Songlin; Wang, Peng; Sang, Xinzhu; Li, Chengyu

    2016-01-01

    .... A series of processes are proposed to optimize the augmented reality performance. Experimental results show that the reconstructed fused 3D light field on the autostereoscopic display is well presented...

  18. Virtual, augmented reality and serious games for healthcare

    CERN Document Server

    Jain, Lakhmi; Anderson, Paul

    2014-01-01

    There is a tremendous interest among researchers for the development of virtual, augmented reality and games technologies due to their widespread applications in medicine and healthcare. To date the major applications of these technologies include medical simulation, telemedicine, medical and healthcare training, pain control, visualisation aid for surgery, rehabilitation in cases such as stroke, phobia, and trauma therapies. Many recent studies have identified the benefits of using Virtual Reality, Augmented Reality, or serious games in a variety of medical applications.   This research volume on Virtual, Augmented Reality and Serious Games for Healthcare 1 offers an insightful introduction to the theories, development and applications of virtual, augmented reality and digital games technologies in medical and clinical settings and healthcare in general. It is divided into six sections: section one presents a selection of applications in medical education and healthcare management; Section two relates to th...

  19. Augmented reality aiding collimator exchange at the LHC

    Energy Technology Data Exchange (ETDEWEB)

    Martínez, Héctor, E-mail: hector.martinez@sensetrix.com [SenseTrix, PL 20 FI-00101 Helsinki (Finland); Fabry, Thomas [European Organization for Nuclear Research, CERN, CH-1211 Genève 23 (Switzerland); Laukkanen, Seppo [SenseTrix, PL 20 FI-00101 Helsinki (Finland); Mattila, Jouni [Tampere University of Technology, PO Box 527, FI-33101 Tampere (Finland); Tabourot, Laurent [SYMME, Université de Savoie, Polytech Annecy-Chambéry, 5 chemin de Bellevue, 74944 Annecy le Vieux (France)

    2014-11-01

    Novel Augmented Reality techniques have the potential to have a large positive impact on the way remote maintenance operations are carried out in hazardous areas, e.g. areas where radiation doses that imply careful planning and optimization of maintenance operations are present. This paper describes an Augmented Reality strategy, system and implementation for aiding the remote collimator exchange in the LHC, currently the world's largest and highest-energy particle accelerator. The proposed system relies on marker detection and multi-modal augmentation in real-time. A database system has been used to ensure flexibility. The system has been tested in a mock-up facility, showing real time performance and great potential for future use in the LHC. The technical-scientific difficulties identified during the development of the system and the proposed solutions described in this paper may help the development of future Augmented Reality systems for remote handling in scientific facilities.

  20. Mobile Augmented Reality enhances indoor navigation for wheelchair users

    National Research Council Canada - National Science Library

    Oliveira, Luciene Chagas de; Soares, Alcimar Barbosa; Cardoso, Alexandre; Andrade, Adriano de Oliveira; Lamounier Júnior, Edgard Afonso

    2016-01-01

    ...). The main objective of this work is to propose an architecture based on Mobile Augmented Reality to support the development of indoor navigation systems dedicated to wheelchair users, that is also...

  1. Augmented Reality as a Telemedicine Platform for Remote Procedural Training

    National Research Council Canada - National Science Library

    Shiyao Wang; Michael Parsons; Jordan Stone-McLean; Peter Rogers; Sarah Boyd; Kristopher Hoover; Oscar Meruvia-Pastor; Minglun Gong; Andrew Smith

    2017-01-01

    .... In this research, we develop a new telepresence application using an Augmented Reality (AR) system. We explore the use of the Microsoft HoloLens to facilitate and enhance remote medical training...

  2. Hands in space: gesture interaction with augmented-reality interfaces.

    Science.gov (United States)

    Billinghurst, Mark; Piumsomboon, Tham; Huidong Bai

    2014-01-01

    Researchers at the Human Interface Technology Laboratory New Zealand (HIT Lab NZ) are investigating free-hand gestures for natural interaction with augmented-reality interfaces. They've applied the results to systems for desktop computers and mobile devices.

  3. Dimensions of Mobile Augmented Reality for Learning: A First Inventory

    NARCIS (Netherlands)

    Specht, Marcus; Ternier, Stefaan; Greller, Wolfgang

    2011-01-01

    Specht, M., Ternier, S., & Greller, W. (2011). Dimensions of Mobile Augmented Reality for Learning: A First Inventory. Journal of the Research for Educational Technology (RCET), 7(1), 117-127. Spring 2011.

  4. Hoe maak je gebruik van augmented reality in het onderwijs

    NARCIS (Netherlands)

    Ternier, Stefaan; Kester, Liesbeth; Schmitz, Birgit; Kluijfhout, Eric; Wolff, Charlotte; Maassen, Marcel; Gijselaers, Jérôme; Berkhout, Jeroen; Storm, Jeroen; Roks, Sabine

    2013-01-01

    Ternier, S., Kester, L., Wolff, C., Maasen, M., Gijselaers, J., Berkhout, J., & Storm, J. (2012, 16 November). Hoe maak je gebruik van augmented reality in het onderwijs. Masterclass in de OpenU community Open Universiteit, Heerlen, Nederland. Beschikbaar op

  5. Use of augmented reality in command and control situation awareness

    CSIR Research Space (South Africa)

    Le Roux, WH

    2010-06-01

    Full Text Available Augmented reality is not completely new technology, but rather an interesting combination of existing technologies, facilitated by the rapid progress made on ultra-portable devices such as smart cellular telephones. It has the potential to enhance...

  6. Integrative Augmentation with the New ISO 10000 Standards1

    Directory of Open Access Journals (Sweden)

    Karapetrovic Stanislav

    2014-11-01

    Full Text Available Application and integration of the systems based on ISO 10001: 2007 and other new augmentative standards are discussed. Particular attention is paid to the quality management standards forming the front end of the ISO 10000 series, namely ISO 10001, ISO 10002 and ISO 10003, as well as ISO 19011, the standard which stems from the original augmentative ISO 10000 guideline, specifically ISO 10011 on quality auditing. The ability of these and other similar standards to augment the performance of quality management systems in organizations and to foster integration of the respective augmentative systems themselves or within the overarching management systems is addressed and further illustrated through an example of their use in engineering education.

  7. Topic Space: Rapid Prototyping a Mobile Augmented Reality Recommendation App

    National Research Council Canada - National Science Library

    Jim Hahn; Ben Ryckman; Maria Lux

    2015-01-01

    With funding from an Institute of Museum and Library Services (IMLS) Sparks! Ignition Grant, researchers from the University of Illinois Library designed and tested a mobile recommender app with augmented reality features...

  8. Context-Augmented Robotic Interaction Layer (CARIL) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Today, as humans reach beyond the earth to near and deep space, there is obvious and urgent need to augment the capabilities of human astronauts and (ground-)...

  9. Antioxidant synergistic effects of Osmanthus fragrans flowers with green tea and their major contributed antioxidant compounds

    OpenAIRE

    Shuqin Mao; Kaidi Wang; Yukun Lei; Shuting Yao; Baiyi Lu; Weisu Huang

    2017-01-01

    The antioxidant synergistic effects of Osmanthus fragrans flowers with green tea were evaluated, and their major antioxidant compounds contributed to the total amount of synergy were determined. The antioxidant compounds in O. fragrans flowers with green tea were identified by LC-MS and quantified by UPLC-PDA. The synergistic antioxidant interactions between O. fragrans flowers with green tea and their antioxidant compounds were tested using the Prieto?s model after the simulated digestion. T...

  10. Telescopic multi-resolution augmented reality

    Science.gov (United States)

    Jenkins, Jeffrey; Frenchi, Christopher; Szu, Harold

    2014-05-01

    To ensure a self-consistent scaling approximation, the underlying microscopic fluctuation components can naturally influence macroscopic means, which may give rise to emergent observable phenomena. In this paper, we describe a consistent macroscopic (cm-scale), mesoscopic (micron-scale), and microscopic (nano-scale) approach to introduce Telescopic Multi-Resolution (TMR) into current Augmented Reality (AR) visualization technology. We propose to couple TMR-AR by introducing an energy-matter interaction engine framework that is based on known Physics, Biology, Chemistry principles. An immediate payoff of TMR-AR is a self-consistent approximation of the interaction between microscopic observables and their direct effect on the macroscopic system that is driven by real-world measurements. Such an interdisciplinary approach enables us to achieve more than multiple scale, telescopic visualization of real and virtual information but also conducting thought experiments through AR. As a result of the consistency, this framework allows us to explore a large dimensionality parameter space of measured and unmeasured regions. Towards this direction, we explore how to build learnable libraries of biological, physical, and chemical mechanisms. Fusing analytical sensors with TMR-AR libraries provides a robust framework to optimize testing and evaluation through data-driven or virtual synthetic simulations. Visualizing mechanisms of interactions requires identification of observable image features that can indicate the presence of information in multiple spatial and temporal scales of analog data. The AR methodology was originally developed to enhance pilot-training as well as `make believe' entertainment industries in a user-friendly digital environment We believe TMR-AR can someday help us conduct thought experiments scientifically, to be pedagogically visualized in a zoom-in-and-out, consistent, multi-scale approximations.

  11. Improving Robotic Operator Performance Using Augmented Reality

    Science.gov (United States)

    Maida, James C.; Bowen, Charles K.; Pace, John W.

    2007-01-01

    The Special Purpose Dexterous Manipulator (SPDM) is a two-armed robot that functions as an extension to the end effector of the Space Station Robotics Manipulator System (SSRMS), currently in use on the International Space Station (ISS). Crew training for the SPDM is accomplished using a robotic hardware simulator, which performs most of SPDM functions under normal static Earth gravitational forces. Both the simulator and SPDM are controlled from a standard robotic workstation using a laptop for the user interface and three monitors for camera views. Most operations anticipated for the SPDM involve the manipulation, insertion, and removal of any of several types of Orbital Replaceable Unit (ORU), modules which control various ISS functions. Alignment tolerances for insertion of the ORU into its receptacle are 0.25 inch and 0.5 degree from nominal values. The pre-insertion alignment task must be performed within these tolerances by using available video camera views of the intrinsic features of the ORU and receptacle, without special registration markings. Since optimum camera views may not be available, and dynamic orbital lighting conditions may limit periods of viewing, a successful ORU insertion operation may require an extended period of time. This study explored the feasibility of using augmented reality (AR) to assist SPDM operations. Geometric graphical symbols were overlaid on one of the workstation monitors to afford cues to assist the operator in attaining adequate pre-insertion ORU alignment. Twelve skilled subjects performed eight ORU insertion tasks using the simulator with and without the AR symbols in a repeated measures experimental design. Results indicated that using the AR symbols reduced pre-insertion alignment error for all subjects and reduced the time to complete pre-insertion alignment for most subjects.

  12. AI-augmented time stretch microscopy

    Science.gov (United States)

    Mahjoubfar, Ata; Chen, Claire L.; Lin, Jiahao; Jalali, Bahram

    2017-02-01

    Cell reagents used in biomedical analysis often change behavior of the cells that they are attached to, inhibiting their native signaling. On the other hand, label-free cell analysis techniques have long been viewed as challenging either due to insufficient accuracy by limited features, or because of low throughput as a sacrifice of improved precision. We present a recently developed artificial-intelligence augmented microscope, which builds upon high-throughput time stretch quantitative phase imaging (TS-QPI) and deep learning to perform label-free cell classification with record high-accuracy. Our system captures quantitative optical phase and intensity images simultaneously by frequency multiplexing, extracts multiple biophysical features of the individual cells from these images fused, and feeds these features into a supervised machine learning model for classification. The enhanced performance of our system compared to other label-free assays is demonstrated by classification of white blood T-cells versus colon cancer cells and lipid accumulating algal strains for biofuel production, which is as much as five-fold reduction in inaccuracy. This system obtains the accuracy required in practical applications such as personalized drug development, while the cells remain intact and the throughput is not sacrificed. Here, we introduce a data acquisition scheme based on quadrature phase demodulation that enables interruptionless storage of TS-QPI cell images. Our proof of principle demonstration is capable of saving 40 TB of cell images in about four hours, i.e. pictures of every single cell in 10 mL of a sample.

  13. Augmenting the Deliberative Method for Ranking Risks.

    Science.gov (United States)

    Susel, Irving; Lasley, Trace; Montezemolo, Mark; Piper, Joel

    2016-01-01

    The Department of Homeland Security (DHS) characterized and prioritized the physical cross-border threats and hazards to the nation stemming from terrorism, market-driven illicit flows of people and goods (illegal immigration, narcotics, funds, counterfeits, and weaponry), and other nonmarket concerns (movement of diseases, pests, and invasive species). These threats and hazards pose a wide diversity of consequences with very different combinations of magnitudes and likelihoods, making it very challenging to prioritize them. This article presents the approach that was used at DHS to arrive at a consensus regarding the threats and hazards that stand out from the rest based on the overall risk they pose. Due to time constraints for the decision analysis, it was not feasible to apply multiattribute methodologies like multiattribute utility theory or the analytic hierarchy process. Using a holistic approach was considered, such as the deliberative method for ranking risks first published in this journal. However, an ordinal ranking alone does not indicate relative or absolute magnitude differences among the risks. Therefore, the use of the deliberative method for ranking risks is not sufficient for deciding whether there is a material difference between the top-ranked and bottom-ranked risks, let alone deciding what the stand-out risks are. To address this limitation of ordinal rankings, the deliberative method for ranking risks was augmented by adding an additional step to transform the ordinal ranking into a ratio scale ranking. This additional step enabled the selection of stand-out risks to help prioritize further analysis. © 2015 Society for Risk Analysis.

  14. Transparent 3D display for augmented reality

    Science.gov (United States)

    Lee, Byoungho; Hong, Jisoo

    2012-11-01

    Two types of transparent three-dimensional display systems applicable for the augmented reality are demonstrated. One of them is a head-mounted-display-type implementation which utilizes the principle of the system adopting the concave floating lens to the virtual mode integral imaging. Such configuration has an advantage in that the threedimensional image can be displayed at sufficiently far distance resolving the accommodation conflict with the real world scene. Incorporating the convex half mirror, which shows a partial transparency, instead of the concave floating lens, makes it possible to implement the transparent three-dimensional display system. The other type is the projection-type implementation, which is more appropriate for the general use than the head-mounted-display-type implementation. Its imaging principle is based on the well-known reflection-type integral imaging. We realize the feature of transparent display by imposing the partial transparency to the array of concave mirror which is used for the screen of reflection-type integral imaging. Two types of configurations, relying on incoherent and coherent light sources, are both possible. For the incoherent configuration, we introduce the concave half mirror array, whereas the coherent one adopts the holographic optical element which replicates the functionality of the lenslet array. Though the projection-type implementation is beneficial than the head-mounted-display in principle, the present status of the technical advance of the spatial light modulator still does not provide the satisfactory visual quality of the displayed three-dimensional image. Hence we expect that the head-mounted-display-type and projection-type implementations will come up in the market in sequence.

  15. Third-generation percutaneous vertebral augmentation systems.

    Science.gov (United States)

    Vanni, Daniele; Galzio, Renato; Kazakova, Anna; Pantalone, Andrea; Grillea, Giovanni; Bartolo, Marcello; Salini, Vincenzo; Magliani, Vincenzo

    2016-03-01

    Currently, there is no general consensus about the management of osteoporotic vertebral fractures (OVF). In the past, conservative treatment for at least one month was deemed appropriate for the majority of vertebral fractures. When pain persisted after conservative treatment, it was necessary to consider surgical interventions including: vertebroplasty for vertebral fractures with less than 30% loss of height of the affected vertebral body and kyphoplasty for vertebral fractures with greater than 30% loss of height. Currently, this type of treatment is not feasible. Herein we review the characteristics and methods of operation of three of the most common percutaneous vertebral augmentation systems (PVAS) for the treatment of OVF: Vertebral Body Stenting(®) (VBS), OsseoFix(®) and Spine Jack(®). VBS is a titanium device accompanied by a hydraulic (as opposed to mechanical) working system which allows a partial and not immediate possibility to control the opening of the device. On the other hand, OsseoFix(®) and Spine Jack(®) are accompanied by a mechanical working system which allows a progressive and controlled reduction of the vertebral fracture. Another important aspect to consider is the vertebral body height recovery. OsseoFix(®) has an indirect mechanism of action: the compaction of the trabecular bone causes an increase in the vertebral body height. Unlike the Vertebral Body Stenting(®) and Spine Jack(®), the OsseoFix(®) has no direct lift mechanism. Therefore, for these characteristics and for the force that this device is able to provide. In our opinion, Spine Jack(®) is the only device also suitable for the treatment OVF, traumatic fracture (recent, old or inveterate) and primary or secondary bone tumors.

  16. Potential Role of Selenoenzymes and Antioxidant Metabolism in relation to Autism Etiology and Pathology

    Directory of Open Access Journals (Sweden)

    Laura J. Raymond

    2014-01-01

    Full Text Available Autism and autism spectrum disorders (ASDs are behaviorally defined, but the biochemical pathogenesis of the underlying disease process remains uncharacterized. Studies indicate that antioxidant status is diminished in autistic subjects, suggesting its pathology is associated with augmented production of oxidative species and/or compromised antioxidant metabolism. This suggests ASD may result from defects in the metabolism of cellular antioxidants which maintain intracellular redox status by quenching reactive oxygen species (ROS. Selenium-dependent enzymes (selenoenzymes are important in maintaining intercellular reducing conditions, particularly in the brain. Selenoenzymes are a family of ~25 genetically unique proteins, several of which have roles in preventing and reversing oxidative damage in brain and endocrine tissues. Since the brain’s high rate of oxygen consumption is accompanied by high ROS production, selenoenzyme activities are particularly important in this tissue. Because selenoenzymes can be irreversibly inhibited by many electrophiles, exposure to these organic and inorganic agents can diminish selenoenzyme-dependent antioxidant functions. This can impair brain development, particularly via the adverse influence of oxidative stress on epigenetic regulation. Here we review the physiological roles of selenoproteins in relation to potential biochemical mechanisms of ASD etiology and pathology.

  17. Serum Antioxidative Enzymes Levels and Oxidative Stress Products in Age-Related Cataract Patients

    Directory of Open Access Journals (Sweden)

    Dong Chang

    2013-01-01

    Full Text Available Purpose. To investigate the activity of antioxidative enzymes and the products of oxidative stress in patients with age-related cataracts and compare the findings with those in healthy control subjects. Method. Sixty patients with age-related cataract and sixty healthy controls of matched age and gender were included in this study. Serum samples were obtained to detect the antioxidative enzymes of superoxide dismutase (SOD, catalase (CAT, and glutathione peroxidase (GSH-Px, and oxidation degradation products of malondialdehyde (MDA, 4-hydroxynonenal (4-HNE, conjugated diene (CD, advanced oxidation protein products (AOPP, protein carbonyl (PC, and 8-hydroxydeoxyguanosine (8-OHdG. Results. Serum SOD, GSH-Px, and CAT activities in cataract group were significantly decreased as compared to the control subjects (P<0.05. The levels of MDA, 4-HNE, and CD in cataract patients were significantly higher than those in the control subjects (P<0.05, P<0.01. Cataract patients had higher levels of 8-OHdG, AOPP, and PC with respect to the comparative group of normal subjects (P<0.01. And there was no statistical significance in concentration of antioxidative enzymes and oxidative stress products in patients with different subtype cataract. Conclusions. Oxidative stress is an important risk factor in the development of age-related cataract, and augmentation of the antioxidant defence systems may be of benefit to prevent or delay cataractogenesis.

  18. Beta-carotene as antioxidant

    NARCIS (Netherlands)

    Bast, A.; Plas, R.M. van der; Berg, H. van den; Haenen, G.R.M.M.

    1996-01-01

    Objective: Beta-carotene has been shown to exhibit a good radical-trapping antioxidant activity in vitro. We were interested to see if dietary β-carotene in combination with various intake levels for vitamin A would also inhibit lipid peroxidation. Design: Sixty male Wistar rats received vitamin A

  19. Antioxidant effects of green tea

    Science.gov (United States)

    FORESTER, SARAH C.; LAMBERT, JOSHUA D.

    2013-01-01

    Consumption of green tea (Camellia sinensis) may provide protection against chronic diseases, including cancer. Green tea polyphenols are believed to be responsible for this cancer preventive effect, and the antioxidant activity of the green tea polyphenols has been implicated as a potential mechanism. This hypothesis has been difficult to study in vivo due to metabolism of these compounds and poor understanding of the redox environment in vivo. Green tea polyphenols can be direct antioxidants by scavenging reactive oxygen species or chelating transition metals as has been demonstrated in vitro. Alternatively, they may act indirectly by up-regulating phase II antioxidant enzymes. Evidence of this latter effect has been observed in vivo, yet more work is required to determine under which conditions these mechanisms occur. Green tea polyphenols can also be potent pro-oxidants, both in vitro and in vivo, leading to the formation of hydrogen peroxide, the hydroxyl radical, and superoxide anion. The potential role of these pro-oxidant effects in the cancer preventive activity of green tea is not well understood. The evidence for not only the antioxidant, but also pro-oxidant, properties of green tea are discussed in the present review. PMID:21538850

  20. Antioxidant therapy in idiopathic oligoasthenoteratozoospermia

    Directory of Open Access Journals (Sweden)

    Ahmad Majzoub

    2017-01-01

    Conclusion: Additional randomized controlled studies are required to confirm the efficacy and safety of antioxidant supplementation in the medical treatment of idiopathic male infertility as well as the dosage required to improve semen parameters, fertilization rates, and pregnancy outcomes in iOAT.

  1. Antioxidant activity of Potentilla fruticosa

    NARCIS (Netherlands)

    Miliauskas, G.; Beek, van T.A.; Venskutonis, P.R.; Linssen, J.P.H.; Waard, de P.; Sudhölter, E.J.R.

    2004-01-01

    The molecular structures of the radical scavenging compounds present in extracts of Potentilla fruticosa blossoms were elucidated and the antioxidant activities of various extracts were determined. The activities of the different fractions were monitored by off-line and on-line RP-HPLC DPPH. and

  2. Antioxidant activity of banana flavonoids.

    Science.gov (United States)

    Vijayakumar, S; Presannakumar, G; Vijayalakshmi, N R

    2008-06-01

    The antioxidant activity of flavonoids from banana (Musa paradisiaca) was studied in rats fed normal as well as high fat diets. Concentrations of peroxidation products namely malondialdehyde, hydroperoxides and conjugated diens were significantly decreased whereas the activities of catalase and superoxide dismutase were enhanced significantly. Concentrations of glutathione were also elevated in the treated animals.

  3. Fruit antioxidants during vinegar processing

    NARCIS (Netherlands)

    Bakir, Sena; Toydemir, Gamze; Boyacioglu, Dilek; Beekwilder, Jules; Capanoglu, Esra

    2016-01-01

    Background: Vinegars based on fruit juices could conserve part of the health-associated compounds present in the fruits. However, in general very limited knowledge exists on the consequences of vinegar-making on different antioxidant compounds from fruit. In this study vinegars derived from apple

  4. Antioxidant capacity and physical exercise

    Directory of Open Access Journals (Sweden)

    A Marciniak

    2009-09-01

    Full Text Available The aim of this article is a presentation of current knowledge regarding the changes of plasma antioxidant capacity observed in response to physical exercise. Human body created the enzymatic and non-enzymatic systems, which play a protective role in the harmful impact of free radicals. Those two systems constitute what is known as the plasma total antioxidant capacity. The amount of reactive oxygen species (ROS and reactive nitrogen species (NOS in combination with oxidation processes increases in some tissues during physiological response to physical exercise. These changes are observed after single bout of exercise as well as after regular training. The response of human body to physical exercise can be analysed using various models of exercise test. Application of repeated type of exhaustion allows for characterizing the ability of human body to adjust to the increased energy loss and increased oxygen consumption. This article presents the characteristics of components of plasma antioxidant capacity, the mechanisms of free radicals production and their role in human body. It discusses also the currently used methods of detecting changes in total antioxidant capacity and its individual elements in response to single bout of exercise and regular training. It presents the review of literature about research performed in groups of both regularly training and low exercise activity individuals as well as in group of healthy subjects and patients with circulation diseases.

  5. Antioxidant activity of Cinnamomum cassia.

    Science.gov (United States)

    Lin, Chun-Ching; Wu, Sue-Jing; Chang, Cheng-Hsiung; Ng, Lean-Teik

    2003-08-01

    The antioxidant activities of hot water extracts (HWECC) and ethanol extracts (EECC) from the dry bark of Cinnamomum cassia Presl were evaluated in this study. Results showed that at 1.0 mg/mL, the ethanol extracts of C. cassia (96.30%) exhibited a greater inhibition than the alpha-tocopherol (93.74%) on FeCl(2)-ascorbic acid induced lipid peroxidation of rat liver homogenate in vitro. From 0.05 to 1.0 mg/mL, the EECC demonstrated the highest superoxide anions scavenging activity and the strongest anti-superoxide formation activity (p < 0.05). The same extract also showed an excellent antioxidant activity in enzymatic and nonenzymatic liver tissue oxidative systems. EECC revealed the strongest antioxidant activity followed by alpha-tocopherol and HWECC. Compared to alpha-tocopherol, the IC(50) values of EECC were found to be lower in thiobarbituric acid test (IC(50) = 0.24 mg/mL vs 0.37 mg/mL), in cytochrome c test (IC(50) = 0.16 mg/mL vs 0.27 mg/mL) and in xanthine oxidase inhibition test (IC(50) = 0.09 mg/mL vs 0.19 mg/mL). The present study concludes that EECC could be used as a good source of antioxidant in the dietary supplement. Copyright 2003 John Wiley & Sons, Ltd.

  6. ANTIOXIDANT STATUS IN DIABETIC NEUROPATHY

    Directory of Open Access Journals (Sweden)

    Giriraja Vrushabaiah Kanakapura

    2017-09-01

    Full Text Available BACKGROUND Diabetic neuropathy, retinopathy and nephropathy are the chronic complications of diabetes mellitus. Neuropathy, retinopathy and nephropathy are microvascular complication of diabetes mellitus. Antioxidant status is reduced in DM-induced retinopathy and nephropathy. Present study is undertaken to evaluate the degree of oxidative stress in diabetic neuropathy patients. The aim of the study is to study on oxidative stress as measured by lipid peroxidation marker, malondialdehyde and antienzyme status in type II DM patients with neuropathy and compared them with a controlled nondiabetic group. MATERIALS AND METHODS The study included 100 subjects from Sapthagiri Medical College, Bangalore, from January 1, 2015, to December 31, 2015, of age group 50 to 70 yrs. out of which 50 patients were non-insulin-dependent DM with neuropathy and rest 50 age and sex matched apparently healthy individuals (control group. Antioxidant status was assessed by measuring superoxide dismutase (SOD, glutathione peroxidase (GPx, glutathione reductase (GR, Catalase and Reduced Glutathione (GSH. RESULTS It showed a significant increase p<0.001 in FBS, PPBS, TC, TG, LDL, VLDL, CAT, MDA, while HDL, GSH, GPX, GR and SOD were found to be decreased significantly (p 0.001. CONCLUSION MDA was significantly elevated in diabetic group, whereas antioxidant enzymes superoxide dismutase, glutathione peroxidase, glutathione reductase and reduced glutathione were significantly decreased, which might be helpful in risk assessment of various complications of DM. The data suggests that alteration in antioxidant status and MDA may help to predict the risk of diabetic neuropathy.

  7. Antioxidative activity of Geranium macrorrhizum

    NARCIS (Netherlands)

    Miliauskas, G.; Beek, van T.A.; Venskutonis, P.R.; Linssen, J.P.H.; Waard, de P.

    2004-01-01

    The composition of radical-scavenging compounds from Geranium macrorrhizum leaves was analyzed and the antioxidative activities of various extracts was determined. Seven compounds, namely gallic acid, ellagic acid, 4-galloyl quinic acid, the flavonoid quercetin and three of its glycosides,

  8. Clinical treatment of postoperative infection following sinus augmentation

    OpenAIRE

    Hong, Seung-Bum; Kim, Jae-Suk; Shin, Seung-Il; Han, Ji-Young; Herr, Yeek; Chung, Jong-Hyuk

    2010-01-01

    Purpose The aim of this case report is to present the successful clinical treatment of two cases of postoperative infection following maxillary sinus augmentation. Methods In the two cases of postoperative infection, immediate total removal of the grafted material from the sinus was conducted to stop the spread of the infection, after which a high dose of antibiotics was administrated. Re-augmentation procedures were then conducted after the infection subsided. Results No further complication...

  9. Merging Augmented Reality Based Features in Mobile Multimedia Museum Guides

    OpenAIRE

    Damala, Areti; Marchal, Isabelle; Houlier, Pascal

    2007-01-01

    International audience; Augmented Reality (AR), a computer science field considered by many as a subfield of the broader concept of Mixed Reality, could alter dramatically the way we interact not only with computers but also with the real environment surrounding us, as well as with other human beings. Augmented Reality has so far been used for applications linked with military training, medicine, maintenance, architecture and urban planning, tourism, and entertainment. This last category embr...

  10. Adaptive augmented reality for cultural heritage: ARtSENSE project

    OpenAIRE

    Damala, A.; Stojanovic, N.; Schuchert, Tobias; Moragues, J.; Cabrera, A.; Gilleade, K

    2012-01-01

    The paper presents the new concept of Adaptive Augmented Reality (A2R), employed within the context of the creation of an AR guide for the museum visit, that is being developed in the context of an EU research project. The main objective of the project is to provide a prototype that enables a personalized experience for every individual visitor by adapting to the psychological state of the visitor the content presented through an augmented reality museum guidance system.

  11. A survey on haptic technologies for mobile augmented reality

    OpenAIRE

    Bermejo, Carlos; Hui, Pan

    2017-01-01

    Augmented Reality (AR) and Mobile Augmented Reality (MAR) applications have gained much research and industry attention these days. The mobile nature of MAR applications limits users' interaction capabilities such as inputs, and haptic feedbacks. This survey reviews current research issues in the area of human computer interaction for MAR and haptic devices. The survey first presents human sensing capabilities and their applicability in AR applications. We classify haptic devices into two gro...

  12. MHP Oriented Interactive Augmented Reality System for Sports Broadcasting Environments

    OpenAIRE

    Olaizola, Igor G.; Martirena, Inigo Barandiaran; Kammann, Tobias D.

    2006-01-01

    Television and movie images have been altered ever since it was technically possible. Nowadays embedding advertisements, or incorporating text and graphics in TV scenes, are common practice, but they can not be considered as integrated part of the scene. The introduction of new services for interactive augmented television is discussed in this paper. We analyse the main aspects related with the whole chain of augmented reality production.Interactivity is one of the most important added values...

  13. Classifying handheld Augmented Reality: Three categories linked by spatial mappings

    OpenAIRE

    Vincent, Thomas; Nigay, Laurence; Kurata, Takeshi

    2012-01-01

    Session 1: Research papers; International audience; Handheld Augmented Reality (AR) relies on a spatial coupling of the on-screen content with the physical surrounding. To help the design of such systems and to classify existing AR systems, we present a framework made of three categories and two spatial relationships. Our framework highlights spatial relationships between the physical world, the representation of the physical world on screen and the augmentation on screen. Within this framewo...

  14. Aerodynamic structures and processes in rotationally augmented flow fields

    DEFF Research Database (Denmark)

    Schreck, S.J.; Sørensen, Niels N.; Robinson, M.C.

    2007-01-01

    Rotational augmentation of horizontal axis wind turbine blade aerodynamics currently remains incompletely characterized and understood. To address this, the present study concurrently analysed experimental measurements and computational predictions, both of which were unique and of high quality...... to reliably identify and track pertinent features in the rotating blade boundary layer topology as they evolved in response to varying wind speed. Subsequently, boundary layer state was linked to above-surface flow field structure and used to deduce mechanisms; underlying augmented aerodynamic force...

  15. Topic Space: Rapid Prototyping a Mobile Augmented Reality Recommendation App

    OpenAIRE

    Jim Hahn; Ben Ryckman; Maria Lux

    2015-01-01

    With funding from an Institute of Museum and Library Services (IMLS) Sparks! Ignition Grant, researchers from the University of Illinois Library designed and tested a mobile recommender app with augmented reality features. By embedding open source optical character recognition software into a “Topic Space” module, the augmented reality app can recognize call numbers on a book in the library and suggest relevant items that are not shelved nearby. Topic Space can also show users items that are ...

  16. Cosmetic tourism for breast augmentation: a systematic review.

    Science.gov (United States)

    Brightman, Louise; Ng, Sze; Ahern, Susannah; Cooter, Rodney; Hopper, Ingrid

    2017-12-03

    The medical tourism industry, and in particular cosmetic tourism for breast augmentation, is becoming an increasingly popular global phenomenon. The objective of this study is to determine the extent of medical literature and the patient risk profiles associated with cosmetic tourism for breast augmentation both locally and abroad. OVID MEDLINE, OVID Embase, Cochrane Central and Proquest electronic databases. The search was conducted through to April 2017. Studies pertaining entirely or partly to cosmetic tourism for breast augmentation were considered for inclusion. Exclusion criteria included non-English articles, studies relating to non-cosmetic or non-implant breast augmentation, and studies that did not separately report on findings associated with breast augmentation abroad. We identified 17 observational studies. Common destinations included Europe, South America and South East Asia. Infectious complications were common. Wound dehiscence and aesthetic dissatisfaction also featured. Catastrophic outcomes such as sepsis, intubation and ventilation, radical bilateral mastectomy, irreversible hypoxic brain injury and death were also reported. There were expectations that home country health systems would treat complications and provide non-medically indicated revision procedures. The burden on home country health systems was evident from a public health perspective. Determining the extent of cosmetic tourism for breast augmentation, including outcomes and complications, will help to inform Australian patients who this seek procedure abroad. Furthermore, it will aid in better understanding the health system implications and may help to guide future research and public health interventions both locally and internationally. © 2017 Royal Australasian College of Surgeons.

  17. Augmented reality based real-time subcutaneous vein imaging system.

    Science.gov (United States)

    Ai, Danni; Yang, Jian; Fan, Jingfan; Zhao, Yitian; Song, Xianzheng; Shen, Jianbing; Shao, Ling; Wang, Yongtian

    2016-07-01

    A novel 3D reconstruction and fast imaging system for subcutaneous veins by augmented reality is presented. The study was performed to reduce the failure rate and time required in intravenous injection by providing augmented vein structures that back-project superimposed veins on the skin surface of the hand. Images of the subcutaneous vein are captured by two industrial cameras with extra reflective near-infrared lights. The veins are then segmented by a multiple-feature clustering method. Vein structures captured by the two cameras are matched and reconstructed based on the epipolar constraint and homographic property. The skin surface is reconstructed by active structured light with spatial encoding values and fusion displayed with the reconstructed vein. The vein and skin surface are both reconstructed in the 3D space. Results show that the structures can be precisely back-projected to the back of the hand for further augmented display and visualization. The overall system performance is evaluated in terms of vein segmentation, accuracy of vein matching, feature points distance error, duration times, accuracy of skin reconstruction, and augmented display. All experiments are validated with sets of real vein data. The imaging and augmented system produces good imaging and augmented reality results with high speed.

  18. Restoring Segmental Biomechanics Through Nucleus Augmentation: An In Vitro Study.

    Science.gov (United States)

    Pelletier, Matthew H; Cohen, Charles S; Ducheyne, Paul; Walsh, William R

    2016-12-01

    In vitro biomechanical laboratory study. The purpose of this study is to evaluate a mechanical treatment to create a degenerative motion segment and the ability of nucleus augmentation to restore biomechanics. In cases with an intact annulus fibrosus, the replacement or augmentation of the nucleus pulposus alone may provide a less invasive option to restore normal biomechanics and disk height when compared with spinal fusion or total disk replacement. Laboratory testing allows these changes to be fully characterized. However, without preexisting pathology, nucleus augmentation therapies are difficult to evaluate in vitro. The present study evaluated pure moment bending and compressive biomechanics in 3 states (n=6): (1) intact, (2) after creep loading and nucleus disruption to induce degenerative biomechanical changes, and (3) after nucleus augmentation through an injectable polymer (DiscCell). Neutral zone and ROM were increased in all modes of bending after the degenerative treatment. The most sensitive mode of bending was lateral bending, with intact ROM (20.0±2.9 degrees) increased to 22.3±2.6 degrees after degenerative treatment and reduced to 18.4±1.6 degrees after injection of the polymer. All bending ROM and NZ changes induced by the degenerative treatment were reversed by nucleus augmentation. This material was shown to be effective at altering motion segment biomechanics and restoring disk height during time zero tests. This technique may provide a model to examine the time zero performance of a nucleus augmentation device/material.

  19. Cellular antioxidant activity of common fruits.

    Science.gov (United States)

    Wolfe, Kelly L; Kang, Xinmei; He, Xiangjiu; Dong, Mei; Zhang, Qingyuan; Liu, Rui Hai

    2008-09-24

    Measurement of antioxidant activity using biologically relevant assays is important in the screening of fruits for potential health benefits. The cellular antioxidant activity (CAA) assay quantifies antioxidant activity in cell culture and was developed to meet the need for a more biologically representative method than the popular chemistry antioxidant capacity measures. The objective of the study was to determine the cellular antioxidant activity, total phenolic contents, and oxygen radical absorbance capacity (ORAC) values of 25 fruits commonly consumed in the United States. Pomegranate and berries (wild blueberry, blackberry, raspberry, and blueberry) had the highest CAA values, whereas banana and melons had the lowest. Apples were found to be the largest contributors of fruit phenolics to the American diet, and apple and strawberries were the biggest suppliers of cellular antioxidant activity. Increasing fruit consumption is a logical strategy to increase antioxidant intake and decrease oxidative stress and may lead to reduced risk of cancer.

  20. Natural Antioxidants: Fascinating or Mythical Biomolecules?

    Directory of Open Access Journals (Sweden)

    Johannes Van Staden

    2010-10-01

    Full Text Available Research on the use, properties, characteristics and sources of antioxidants especially phenolic compounds, flavonoids, vitamins, synthetic chemicals and some micronutrients began in the late 18th century. Since then antioxidant research has received considerable attention and over a hundred thousand papers have been published on the subject. This has led to a rampant use of antioxidants in order to try to obtain and preserve optimal health. A number of nutraceuticals and food supplements are frequently fortified with synthetic or natural antioxidants. However, some research outcomes have led to the belief that antioxidants exist as mythical biomolecules. This review provides a critical evaluation of some common in vitro antioxidant capacity methods, and a discussion on the role and controversies surrounding non-enzymatic biomolecules, in particular phenolic compounds and non-phenolic compounds, in oxidative processes in an attempt of stemming the tidal wave that is threatening to swamp the concept of natural antioxidants.

  1. Probiotics as potential antioxidants: a systematic review.

    Science.gov (United States)

    Mishra, Vijendra; Shah, Chandni; Mokashe, Narendra; Chavan, Rupesh; Yadav, Hariom; Prajapati, Jashbhai

    2015-04-15

    Probiotics are known for their health beneficial effects and are established as dietary adjuncts. Probiotics have been known for many beneficial health effects. In this view, there is interest to find the potential probiotic strains that can exhibit antioxidant properties along with health benefits. In vitro and in vivo studies indicate that probiotics exhibit antioxidant potential. In this view, consumption of probiotics alone or foods supplemented with probiotics may reduce oxidative damage, free radical scavenging rate, and modification in activity of crucial antioxidative enzymes in human cells. Incorporation of probiotics in foods can provide a good strategy to supply dietary antioxidants, but more studies are needed to standardize methods and evaluate antioxidant properties of probiotics before they can be recommended for antioxidant potential. In this paper, the literature related to known antioxidant potential of probiotics and proposing future perspectives to conduct such studies has been reviewed.

  2. Improving target detection in visual search through the augmenting multi-sensory cues

    NARCIS (Netherlands)

    Hancock, P.A.; Mercado, J.E.; Merlo, J.; Erp, J.B.F. van

    2013-01-01

    The present experiment tested 60 individuals on a multiple screen, visual target detection task. Using a within-participant design, individuals received no-cue augmentation, an augmenting tactile cue alone, an augmenting auditory cue alone or both of the latter augmentations in combination. Results

  3. Augmented reality for biomedical wellness sensor systems

    Science.gov (United States)

    Jenkins, Jeffrey; Szu, Harold

    2013-05-01

    Due to the commercial move and gaming industries, Augmented Reality (AR) technology has matured. By definition of AR, both artificial and real humans can be simultaneously present and realistically interact among one another. With the help of physics and physiology, we can build in the AR tool together with real human day-night webcam inputs through a simple interaction of heat transfer -getting hot, action and reaction -walking or falling, as well as the physiology -sweating due to activity. Knowing the person age, weight and 3D coordinates of joints in the body, we deduce the force, the torque, and the energy expenditure during real human movements and apply to an AR human model. We wish to support the physics-physiology AR version, PPAR, as a BMW surveillance tool for senior home alone (SHA). The functionality is to record senior walking and hand movements inside a home environment. Besides the fringe benefit of enabling more visits from grand children through AR video games, the PP-AR surveillance tool may serve as a means to screen patients in the home for potential falls at points around in house. Moreover, we anticipate PP-AR may help analyze the behavior history of SHA, e.g. enhancing the Smartphone SHA Ubiquitous Care Program, by discovering early symptoms of candidate Alzheimer-like midnight excursions, or Parkinson-like trembling motion for when performing challenging muscular joint movements. Using a set of coordinates corresponding to a set of 3D positions representing human joint locations, we compute the Kinetic Energy (KE) generated by each body segment over time. The Work is then calculated, and converted into calories. Using common graphics rendering pipelines, one could invoke AR technology to provide more information about patients to caretakers. Alerts to caretakers can be prompted by a patient's departure from their personal baseline, and the patient's time ordered joint information can be loaded to a graphics viewer allowing for high

  4. Augmented reality in laparoscopic surgical oncology.

    Science.gov (United States)

    Nicolau, Stéphane; Soler, Luc; Mutter, Didier; Marescaux, Jacques

    2011-09-01

    Minimally invasive surgery represents one of the main evolutions of surgical techniques aimed at providing a greater benefit to the patient. However, minimally invasive surgery increases the operative difficulty since the depth perception is usually dramatically reduced, the field of view is limited and the sense of touch is transmitted by an instrument. However, these drawbacks can currently be reduced by computer technology guiding the surgical gesture. Indeed, from a patient's medical image (US, CT or MRI), Augmented Reality (AR) can increase the surgeon's intra-operative vision by providing a virtual transparency of the patient. AR is based on two main processes: the 3D visualization of the anatomical or pathological structures appearing in the medical image, and the registration of this visualization on the real patient. 3D visualization can be performed directly from the medical image without the need for a pre-processing step thanks to volume rendering. But better results are obtained with surface rendering after organ and pathology delineations and 3D modelling. Registration can be performed interactively or automatically. Several interactive systems have been developed and applied to humans, demonstrating the benefit of AR in surgical oncology. It also shows the current limited interactivity due to soft organ movements and interaction between surgeon instruments and organs. If the current automatic AR systems show the feasibility of such system, it is still relying on specific and expensive equipment which is not available in clinical routine. Moreover, they are not robust enough due to the high complexity of developing a real-time registration taking organ deformation and human movement into account. However, the latest results of automatic AR systems are extremely encouraging and show that it will become a standard requirement for future computer-assisted surgical oncology. In this article, we will explain the concept of AR and its principles. Then, we

  5. Augmented Fish Health Monitoring, 1992 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Warren, James W.

    1992-08-01

    The Augmented Fish Health Monitoring Project (Project) had its origin, in the mid-1980's, in perceived differences or inconsistencies in fish disease detection, diagnosis and control capabilities between the five conservation agencies rearing and releasing anadromous salmonids for fishery resource management and mitigation purposes in the Columbia River basin. Agency fish health programs varied greatly. Some agencies had personnel, equipment and funding to frequently monitor the health status of both juvenile production fish and adult salmon or steelhead trout at the time of spawning. Other agencies had much smaller programs and limited resources. These differences became better understood when the Pacific Northwest Fish Health Protection Committee developed its Model Fish Health Protection Program including recommendations for standard fish disease detection procedures. Even though some agencies could not immediately attain the goals set by the Model Program it was unanimously adopted as a desirable objective. Shortly thereafter, a multi-party planning group was assembled to help the Bonneville Power Administration (BPA) find ways to improve agency fish health programs and implement measures under the Fish and Wildlife Program of the Northwest Power Planning Council. The planning group assessed existing agency fish health monitoring capabilities, agreed upon satisfactory levels of capability to detect and identify important fish pathogens, and designed a five-year project establishing comparable fish health monitoring capability in each agency. It was strongly believed that such a project would improve the health and quality of the millions of hatchery fish released annually in the Columbia River basin and improve interagency communications and disease control coordination. During 1986 and 1987 BPA individually negotiated five separate contracts with the fishery agencies to standardize fish health monitoring, develop a common data collection and reporting

  6. Antioxidant Capacities of Fractions of Bamboo Shaving Extract and Their Antioxidant Components.

    Science.gov (United States)

    Gong, Jinyan; Huang, Jun; Xiao, Gongnian; Chen, Feng; Lee, Bolim; Ge, Qing; You, Yuru; Liu, Shiwang; Zhang, Ying

    2016-07-30

    This research was conducted for evaluation of antioxidant activities of four fractions from bamboo shavings extract (BSE) and their antioxidant components. The antioxidant capacities of BSE and four fractions on ABTS, DPPH, FRAP and total antioxidant capacity assays exhibited the following descending order: DF > n-butanol fraction (BF) > BSE ≈ ethyl acetate fraction (AF) > water fraction (WF). Among the identified phenolic compounds, caffeic acid exhibited the highest antioxidant capacities on DPPH, FRAP and total antioxidant capacity assays. An extremely significant positive correlation between the antioxidant activities with the contents of total flavonoids, total phenolic acids, or total phenolics was observed in this study. The result indicated that the bamboo shaving extract and its solvent fractions could act as natural antioxidants in light of their potent antioxidant activities.

  7. Image-guided transorbital procedures with endoscopic video augmentation.

    Science.gov (United States)

    DeLisi, Michael P; Mawn, Louise A; Galloway, Robert L

    2014-09-01

    Surgical interventions to the orbital space behind the eyeball are limited to highly invasive procedures due to the confined nature of the region along with the presence of several intricate soft tissue structures. A minimally invasive approach to orbital surgery would enable several therapeutic options, particularly new treatment protocols for optic neuropathies such as glaucoma. The authors have developed an image-guided system for the purpose of navigating a thin flexible endoscope to a specified target region behind the eyeball. Navigation within the orbit is particularly challenging despite its small volume, as the presence of fat tissue occludes the endoscopic visual field while the surgeon must constantly be aware of optic nerve position. This research investigates the impact of endoscopic video augmentation to targeted image-guided navigation in a series of anthropomorphic phantom experiments. A group of 16 surgeons performed a target identification task within the orbits of four skull phantoms. The task consisted of identifying the correct target, indicated by the augmented video and the preoperative imaging frames, out of four possibilities. For each skull, one orbital intervention was performed with video augmentation, while the other was done with the standard image guidance technique, in random order. The authors measured a target identification accuracy of 95.3% and 85.9% for the augmented and standard cases, respectively, with statistically significant improvement in procedure time (Z=-2.044, p=0.041) and intraoperator mean procedure time (Z=2.456, p=0.014) when augmentation was used. Improvements in both target identification accuracy and interventional procedure time suggest that endoscopic video augmentation provides valuable additional orientation and trajectory information in an image-guided procedure. Utilization of video augmentation in transorbital interventions could further minimize complication risk and enhance surgeon comfort and

  8. Hard tissue augmentation for alveolar defects before implant placement

    Directory of Open Access Journals (Sweden)

    Mutia Rochmawati

    2017-08-01

    Full Text Available Background. Often when planning implant therapy, there is a need to augment or  replace  bone  that  has  been  lost. The alveolar defects may occur as a result of tooth loss due to extraction, advanced periodontal diseases or trauma, long term use of removable appliances, dehiscence and fenestration defects, developmental defects/clefts, congenitally missing teeth and odontogenic cysts and tumors. Insufficient bone volume can be brought about by hard tissue augmentation. This techniques have led to increased predictability in reconstruction of alveolar ridge defects and functional implant placement. Purpose. To describe the methods of hard tissue augmentation which can be done with block grafts (autografts and allografts, particulate grafts (cortical and cancellous, xenografts, or synthetic materials. Review. The reconstruction of a normal alveolar housing, in height and width, is imperative to achieve a harmonious balance between biology, function, and aesthetics. Depending on the size and morphology of the defect, horizontal or vertical, various augmentation procedures can be used. Soft tissue management is a critical aspect of hard tissue augmentation procedures. Incisions, reflection, and manipulation should be designed to optimize blood supply and wound closure. The design and management of mucoperiosteal flaps must consider the increased dimensions of the ridge after augmentation as well as esthetics and approximation of the wound margins. The surgical procedure needs to be executed with utmost care to preserve the maximum vascularity to the flap and minimize tissue injury. Conclusion. Alveolar ridge defects can be classified by using Seibert’s classification or HVC System. The treatment of alveolar ridge defect before implant placement can be done with hard tissue augmentation.

  9. Transforming Polar Research with Google Glass Augmented Reality (Invited)

    Science.gov (United States)

    Ruthkoski, T.

    2013-12-01

    Augmented reality is a new technology with the potential to accelerate the advancement of science, particularly in geophysical research. Augmented reality is defined as a live, direct or indirect, view of a physical, real-world environment whose elements are augmented (or supplemented) by computer-generated sensory input such as sound, video, graphics or GPS data. When paired with advanced computing techniques on cloud resources, augmented reality has the potential to improve data collection techniques, visualizations, as well as in-situ analysis for many areas of research. Google is currently a pioneer of augmented reality technology and has released beta versions of their wearable computing device, Google Glass, to a select number of developers and beta testers. This community of 'Glass Explorers' is the vehicle from which Google shapes the future of their augmented reality device. Example applications of Google Glass in geophysical research range from use as a data gathering interface in harsh climates to an on-site visualization and analysis tool. Early participation in the shaping of the Google Glass device is an opportunity for researchers to tailor this new technology to their specific needs. The purpose of this presentation is to provide geophysical researchers with a hands-on first look at Google Glass and its potential as a scientific tool. Attendees will be given an overview of the technical specifications as well as a live demonstration of the device. Potential applications to geophysical research in polar regions will be the primary focus. The presentation will conclude with an open call to participate, during which attendees may indicate interest in developing projects that integrate Google Glass into their research. Application Mockup: Penguin Counter Google Glass Augmented Reality Device

  10. Mortality after bladder augmentation in children with spina bifida.

    Science.gov (United States)

    Szymanski, Konrad M; Misseri, Rosalia; Whittam, Benjamin; Adams, Cyrus M; Kirkegaard, Jordan; King, Shelly; Kaefer, Martin; Rink, Richard C; Cain, Mark P

    2015-02-01

    Renal failure has been a leading cause of death for children with spina bifida. Although improvements in management have increased survival, current data on mortality are sparse. Bladder augmentation, a modern intervention to preserve renal function, carries risks of morbidity and mortality. We determined long-term mortality and causes of death in patients with spina bifida treated with bladder augmentation. We retrospectively reviewed the records of patients with spina bifida who underwent bladder augmentation between 1979 and 2013. Those born before 1972 or older than 21 years at augmentation were excluded. Demographic and surgical data were collected. Outcomes were obtained from medical records, death records and the Social Security Death Index. Fisher exact and Wilcoxon rank-sum tests and Kaplan-Meier plots were used for analysis. Of 888 patients in our bladder reconstruction database 369 with spina bifida met inclusion criteria. Median followup was 10.8 years. A total of 28 deaths (7.6%) occurred. The leading causes of mortality were nonurological infections (ventriculoperitoneal shunt related, decubitus ulcer fasciitis, etc) and pulmonary disease. Two patients (0.5%) died of renal failure. No patient died of malignancy or bladder perforation. Patients with a ventriculoperitoneal shunt had a higher mortality rate than those without a shunt (8.9% vs 1.5%, p = 0.04). Previously reported mortality rates of 50% to 60% in patients with spina bifida do not appear to apply in children who have undergone bladder augmentation. On long-term followup leading causes of death in patients with spina bifida after bladder augmentation were nonurological infections rather than complications associated with augmentation or renal failure. Copyright © 2015 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.

  11. EgoSAR: Towards a personalized spatial augmented reality experience in multi-user environments

    OpenAIRE

    Ridel, Brett; Mignard-Debise, Lois; Granier, Xavier; Reuter, Patrick

    2016-01-01

    International audience; Common spatial augmented reality techniques use video projection to superimpose virtual information over a physical scene. As the augmentation happens directly in the real world, multiple users can see the augmented scene, however, the augmentation is the same for all users. We introduce EgoSAR, a new approach that makes it possible to have a personalized, view-dependent augmentation, in multiuser environments. Our key idea is to use retroreflective material for the pe...

  12. Antioxidant neolignans from Cordia americana.

    Science.gov (United States)

    Fernández, Lucía R; Cirigliano, Adriana; Fabani, María P; Lima, Beatriz; Alberti, Sebastián; Kramer, Fernando; Tapia, Alejandro A; Cabrera, Gabriela; Palermo, Jorge A; Sánchez, Marianela

    2013-12-01

    Five new neolignans with a bicyclo[2.2.2]octene framework were isolated from an ethanolic extract of the bark of Cordia americana. The structures and relative configurations of the compounds were elucidated by a combination of spectroscopic methods. All the isolated compounds showed good antioxidant activities in the DPPH radical scavenging (0.5-100 µg/mL) and Ferric-reducing antioxidant power (FRAP, 1-100 µg/mL) assays. One of the compounds displayed mild fungistatic activity at 0.1 µmol/spot against Fusarium virguliforme while, at the same time, all compounds were inactive against several strains of Gram (+) and Gram (-) bacteria at all assayed concentrations (10-1,000 µg/mL). Georg Thieme Verlag KG Stuttgart · New York.

  13. Antioxidants: Are we abusing it?

    Directory of Open Access Journals (Sweden)

    T G Shrihari

    2012-01-01

    The antitumor activity of micronutrients is by their capability of destroying cancer cells through three major mechanisms: (i Tumor inhibition by immune cytokines; (ii stimulation of cancer suppressor genes, such as ′wild-type p54′ and diminished expression or dysregulation of oncogenes, such as mutant p53 and H-ras; (iii inhibition of angiogenesis-stimulating factors, such as transforming growth factor alpha (TGFa. Studies have shown that antioxidants are not the′ magic bullet′ for the treatment of premalignant oral mucosal lesions or the prevention of second primary malignancies. However, there is a role for antioxidants if used judiciously in selected cases that can be monitored carefully. An important principle is that the treatment should not be more harmful than the damage that the lesion can cause.

  14. Antioxidant therapy: myth or reality?

    Energy Technology Data Exchange (ETDEWEB)

    Nunez-Selles, Alberto J. [Center of Pharmaceutical Chemistry, Havana (Cuba)]. E-mail: alberto@cqf.co.cu

    2005-07-15

    New terms such as oxidative stress, antioxidant products or pro-oxidant risks are becoming familiar and an increasing number of international scientific conferences and the publication of thousands of scientific articles is an indication of the growing interest that the subject awakens. The most publicized example is perhaps the French paradox, based on the apparent compatibility of a high fat diet with a low incidence of coronary atherosclerosis attributed to the regular consumption, by the French, of red wine and/or grape juice. Flavonoids, and other phenolic substances contained in red wine, are assigned with antioxidant properties, which lower the oxidation of low density lipoproteins and consequently, the risk of atherogenic diseases. Other examples are the aging process and its correlation with an increase of free radicals, and the correlation between the initiation and promotion of cancer and tissue injury by free radicals, which has induced the intake of antioxidant products as chemical factors that prevent the onset of the disease. Currently, the incidence of oxidative stress on the onset and evolution of more than 100 diseases is claimed by several researchers. All these are 'realities', which on the other hand, are lacking of more clinical evidence, are considered by both physicians and health regulatory bodies, either as 'myths' or of 'secondary' importance. In the attempts to destroy those myths, results of chemical, pre-clinical, and clinical works with a crude extract of mango (Mangifera indica L.) stem bark, which has been developed in Cuba, are reviewed, with a strong experimental evidence of its antioxidant, anti-inflammatory and immunomodulatory properties. (author)

  15. Antioxidant plants and diabetes mellitus

    OpenAIRE

    Nasri, Hamid; Shirzad, Hedayatollah; Baradaran, Azar; Rafieian-kopaei, Mahmoud

    2015-01-01

    The incidence of diabetes mellitus (DM) is increasing rapidly and it is expected to increase by 2030. Other than currently available therapeutic options, there are a lot of herbal medicines, which have been recommended for its treatment. Herbal medicines have long been used for the treatment of DM because of the advantage usually having no or less side-effects. Most of these plants have antioxidant activities and hence, prevent or treat hard curable diseases, other than having the property of...

  16. Measuring circulating antioxidants in wild birds.

    Science.gov (United States)

    Cohen, Alan; Klasing, Kirk; Ricklefs, Robert

    2007-05-01

    Antioxidants protect against free radical damage, which is associated with various age-related pathologies. Antioxidants are also an important buffer against the respiratory burst of the immune system. This protection presumably has costs and therefore might underlie important life-history trade-offs. Studying such trade-offs in a comparative context requires field-applicable methods for assessing antioxidant capacity in wild animals. Here, we present modifications to a simple spectrophotometric assay (the TEAC or TAS assay) that can be applied to miniscule amounts of blood plasma to determine circulating antioxidant capacity. Additionally, uric acid, the most abundant circulating antioxidant, should be measured independently. Uric acid in birds is derived from amino acid catabolism, perhaps incidentally to its antioxidant function. The assay was validated in experimental studies on chickens showing effects of diet on antioxidant capacity, and in field measurements on 92 species of birds, which demonstrate substantial species differences in constitutive antioxidant capacity. Furthermore, most wild birds demonstrate a dramatic change in antioxidant capacity due to stress. These results show that this technique detects variation appropriate for both interspecific and intraspecific studies, and that antioxidants and uric acid change in response to conditions of interest to field ecologists, such as diet and stress.

  17. [Antioxidant properties of essential oils].

    Science.gov (United States)

    Misharina, T A; Terenina, M B; Krikunova, N I

    2009-01-01

    By the method of capillary gas-liquid chromatography we studied antioxidant properties and stability during the storage of hexane solutions of 14 individual essential oils from black and white pepper (Piper nigrum L.), cardamom (Elettaria cardamomum L.), nutmeg (Myristica fragrans Houtt.), mace (Myristica fragrans Houtt), juniperberry (Juniperus communis L.), seed of fennel (Foeniculum vulgare Mill., var. dulce Thelling), caraway (Carvum carvi L.), dry leaves of cinnamon (Cinnamomum zeylanicum Bl.), marjoram (Origanum majorana L.), laurel (Laurus nobilis L.), ginger (Zingiber officinale L.), garlic (Allium sativum L.), and clove bud (Caryophyllus aromaticus L.). We assessed the antioxidant properties by the oxidation of aliphatic aldehyde (trans-2-hexenal) into the according carbon acid. We established that essential oils of garlic, clove bud, ginger and leaves of cinnamon have the maximal efficiency of inhibition of hexenal oxidation (80-93%), while black pepper oil has the minimal (49%). Antioxidant properties of essential oils with a high content of substituted phenols depended poorly on its concentration in model systems. We studied the changes in essential oils content during the storage of its hexane solutions for 40 days in the light and out of the light and compared it with the stability of essential oils stored for a year out of the light.

  18. Systemic antioxidants and skin health.

    Science.gov (United States)

    Nguyen, Gloria; Torres, Abel

    2012-09-01

    Most dermatologists agree that antioxidants help fight free radical damage and can help maintain healthy skin. They do so by affecting intracellular signaling pathways involved in skin damage and protecting against photodamage, as well as preventing wrinkles and inflammation. In today's modern world of the rising nutraceutical industry, many people, in addition to applying topical skin care products, turn to supplementation of the nutrients missing in their diets by taking multivitamins or isolated, man-made nutraceuticals, in what is known as the Inside-Out approach to skin care. However, ingestion of large quantities of isolated, fragmented nutrients can be harmful and is a poor representation of the kind of nutrition that can be obtained from whole food sources. In this comprehensive review, it was found that few studies on oral antioxidants benefiting the skin have been done using whole foods, and that the vast majority of current research is focused on the study of compounds in isolation. However, the public stands to benefit greatly if more research were to be devoted toward the impact that physiologic doses of antioxidants (obtained from fruits, vegetables, and whole grains) can have on skin health, and on health in general.

  19. Global antioxidant response of meat.

    Science.gov (United States)

    Carrillo, Celia; Barrio, Ángela; Del Mar Cavia, María; Alonso-Torre, Sara

    2017-06-01

    The global antioxidant response (GAR) method uses an enzymatic digestion to release antioxidants from foods. Owing to the importance of digestion for protein breakdown and subsequent release of bioactive compounds, the aim of the present study was to compare the GAR method for meat with the existing methodologies: the extraction-based method and QUENCHER. Seven fresh meats were analyzed using ABTS and FRAP assays. Our results indicated that the GAR of meat was higher than the total antioxidant capacity (TAC) assessed with the traditional extraction-based method. When evaluated with GAR, the thermal treatment led to an increase in the TAC of the soluble fraction, contrasting with a decreased TAC after cooking measured using the extraction-based method. The effect of thermal treatment on the TAC assessed by the QUENCHER method seemed to be dependent on the assay applied, since results from ABTS differed from FRAP. Our results allow us to hypothesize that the activation of latent bioactive peptides along the gastrointestinal tract should be taken into consideration when evaluating the TAC of meat. Therefore, we conclude that the GAR method may be more appropriate for assessing the TAC of meat than the existing, most commonly used methods. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  20. Vertical bone augmentation procedures: basics and techniques in dental implantology.

    Science.gov (United States)

    Draenert, F G; Huetzen, D; Neff, A; Mueller, W E G

    2014-05-01

    An appropriate bony situation is essential for dental implant placement and bony support of soft tissues (pink esthetic). Loss of teeth often results in complex horizontal and vertical alveolar ridge defects. They demand advanced bone augmentation techniques for reconstruction. We present the different techniques and materials used in complex bone augmentation. Clinical cases show the application of the methods in the clinical setting. We present current techniques and materials used in complex bone augmentations. Clinical cases show the application of the methods in the clinical setting. Applied techniques include stabilized-guided bone regeneration (GBR), autologous local block augmentation, modified techniques such as Gellrich shell technique including piezosurgery, pelvic bone blocks, complex materials such as graft-derived bone blocks and their unique handling problems. Successful basic principles are reduction of cortical bone healing due to long remodeling time and possible late loss; extended application of materials with interconnecting porous system and particulate material resulting in fast healing analogous to cancellous bone; mechanical stabilization of the augmentation to allow bony healing in vertical defect situations. GBR and autologous bone blocks with minimal cortical thickness and a high volume of particulated material are most favorable techniques. Copyright © 2013 Wiley Periodicals, Inc.

  1. Composite augmentation phalloplasty: personal experience after 275 patients

    Directory of Open Access Journals (Sweden)

    Juan Monreal

    2015-03-01

    Full Text Available Aim: To report the author's experience in augmentation phalloplasty by studying a retrospective series of patients who underwent fat grafting for girth enhancement or a composite technique based on suspensory ligament release plus fat grafting performed simultaneously. Methods: The author analyzed retrospectively the outcomes of 275 augmentation phalloplasty procedures performed in 259 patients until November 2013. Of these, 127 correspond to girth augmentation with fat grafting and 148 to composite augmentation phalloplasty (girth augmentation with fat grafting and length improvement by suspensory ligament release. In 16 patients girth and length enhancement were performed in two separate procedures. Results: Of this 259 patients, 87 underwent postoperative follow-up for at least 12 months and 160 patients underwent follow-up for at least 6 months. The average increase in circumference at 6 months was 1.7 cm (1.57 cm at 12 months and the average increase in length of 3.2 cm (3.1 cm at 12 months. Twenty-two patients showed minor complications that were treated without sequelae and without influencing the final result. Conclusion: By judicious use of currently available techniques, it is possible to achieve stable increases in penis size. The use of composite techniques provides better final results than the use of individual techniques performed alone due to the increase of the actual volume of the penis. An adequate informed consent is essential in all patients due to the unrealistic expectations expressed by the majority of them.

  2. Current progress on augmented reality visualization in endoscopic surgery.

    Science.gov (United States)

    Nakamoto, Masahiko; Ukimura, Osamu; Faber, Kenneth; Gill, Inderbir S

    2012-03-01

    Advancements in surgery are progressing at a rapid rate; however, there are still limitations, including the ability to accurately visualize the target organ, in particular during laparoscopic surgery. Augmented reality visualization is a novel technique that has been developed to allow the fusion of three-dimensional medical images, such as those from transrectal ultrasound or computed tomography/MRI, with live camera images in real-time. In this review, we describe the current advancements and future directions of augmented reality and its application to laparoscopic surgery. Geometrically-correct superimposed images can be generated by tracking of the laparoscope and registration of the target organ. The fused image between the live laparoscopic images and the reconstructed three-dimensional organ model aides the surgeon in his or her understanding of anatomical structures. Laparoscopic and robot-assisted surgeries in both general surgery and urology have been performed with technical success to date. The primary limitation of the current augmented reality systems is its infancy in dynamic tracking of organ motion or deformation. Recently, augmented reality systems with organ tracking based on real-time image analysis were developed. Further improvement and/or development of such new technologies would resolve these issues. Augmented reality visualization is a significant advancement, improving the precision of laparoscopic/endoscopic surgery. New technologies to improve the dynamic tracking of organ motion or deformation are currently under investigation.

  3. Gunner Goggles: Implementing Augmented Reality into Medical Education.

    Science.gov (United States)

    Wang, Leo L; Wu, Hao-Hua; Bilici, Nadir; Tenney-Soeiro, Rebecca

    2016-01-01

    There is evidence that both smartphone and tablet integration into medical education has been lacking. At the same time, there is a niche for augmented reality (AR) to improve this process through the enhancement of textbook learning. Gunner Goggles is an attempt to enhance textbook learning in shelf exam preparatory review with augmented reality. Here we describe our initial prototype and detail the process by which augmented reality was implemented into our textbook through Layar. We describe the unique functionalities of our textbook pages upon augmented reality implementation, which includes links, videos and 3D figures, and surveyed 24 third year medical students for their impression of the technology. Upon demonstrating an initial prototype textbook chapter, 100% (24/24) of students felt that augmented reality improved the quality of our textbook chapter as a learning tool. Of these students, 92% (22/24) agreed that their shelf exam review was inadequate and 19/24 (79%) felt that a completed Gunner Goggles product would have been a viable alternative to their shelf exam review. Thus, while students report interest in the integration of AR into medical education test prep, future investigation into how the use of AR can improve performance on exams is warranted.

  4. [Display technologies for augmented reality in medical applications].

    Science.gov (United States)

    Eck, Ulrich; Winkler, Alexander

    2018-02-20

    One of the main challenges for modern surgery is the effective use of the many available imaging modalities and diagnostic methods. Augmented reality systems can be used in the future to blend patient and planning information into the view of surgeons, which can improve the efficiency and safety of interventions. In this article we present five visualization methods to integrate augmented reality displays into medical procedures and the advantages and disadvantages are explained. Based on an extensive literature review the various existing approaches for integration of augmented reality displays into medical procedures are divided into five categories and the most important research results for each approach are presented. A large number of mixed and augmented reality solutions for medical interventions have been developed as research prototypes; however, only very few systems have been tested on patients. In order to integrate mixed and augmented reality displays into medical practice, highly specialized solutions need to be developed. Such systems must comply with the requirements with respect to accuracy, fidelity, ergonomics and seamless integration into the surgical workflow.

  5. Thrust Augmentation Measurements for a Pulse Detonation Engine Driven Ejector

    Science.gov (United States)

    Pal, S.; Santoro, Robert J.; Shehadeh, R.; Saretto, S.; Lee, S.-Y.

    2005-01-01

    Thrust augmentation results of an ongoing study of pulse detonation engine driven ejectors are presented and discussed. The experiments were conducted using a pulse detonation engine (PDE) setup with various ejector configurations. The PDE used in these experiments utilizes ethylene (C2H4) as the fuel, and an equi-molar mixture of oxygen and nitrogen as the oxidizer at an equivalence ratio of one. High fidelity thrust measurements were made using an integrated spring damper system. The baseline thrust of the PDE engine was first measured and agrees with experimental and modeling results found in the literature. Thrust augmentation measurements were then made for constant diameter ejectors. The parameter space for the study included ejector length, PDE tube exit to ejector tube inlet overlap distance, and straight versus rounded ejector inlets. The relationship between the thrust augmentation results and various physical phenomena is described. To further understand the flow dynamics, shadow graph images of the exiting shock wave front from the PDE were also made. For the studied parameter space, the results showed a maximum augmentation of 40%. Further increase in augmentation is possible if the geometry of the ejector is tailored, a topic currently studied by numerous groups in the field.

  6. Exercise as an augmentation strategy for treatment of major depression.

    Science.gov (United States)

    Trivedi, Madhukar H; Greer, Tracy L; Grannemann, Bruce D; Chambliss, Heather O; Jordan, Alexander N

    2006-07-01

    The use of augmentation strategies among patients with major depression is increasing because rates of complete remission with standard antidepressant monotherapy are quite low. Clinical and neurobiological data suggest that exercise may be a good candidate for use as an augmentation treatment for depression. This pilot study examined the use of exercise to augment antidepressant medication in patients with major depression. Seventeen patients with incomplete remission of depressive symptoms began a 12-week exercise program while continuing their antidepressant medication (unchanged in type or dose). Individual exercise prescriptions were calculated based on an exercise dose consistent with currently recommended public health guidelines. The exercise consisted of both supervised and home-based sessions. The 17-item Hamilton Rating Scale for Depression (HRSD17) and the Inventory of Depressive Symptomatology-Self-Report (IDS-SR30) were used to assess symptoms of depression on a weekly basis. Intent-to-treat analyses yielded significant decreases on both the HRSD17 (5.8 points, p SR30 (13.9 points, p SR30 scores decreased by 18.8 points. This study provides preliminary evidence for exercise as an effective augmentation treatment for antidepressant medication. This is a lower-cost augmentation strategy that has numerous health benefits and may further reduce depressive symptoms in partial responders to antidepressant treatment. Practical tips on how practitioners can use exercise to enhance antidepressant treatment are discussed. Longer-term use of exercise is also likely to confer additional health benefits for this population.

  7. Effect of Antioxidants Supplementation on Aging and Longevity

    Science.gov (United States)

    Bartosz, Grzegorz

    2014-01-01

    If aging is due to or contributed by free radical reactions, as postulated by the free radical theory of aging, lifespan of organisms should be extended by administration of exogenous antioxidants. This paper reviews data on model organisms concerning the effects of exogenous antioxidants (antioxidant vitamins, lipoic acid, coenzyme Q, melatonin, resveratrol, curcumin, other polyphenols, and synthetic antioxidants including antioxidant nanoparticles) on the lifespan of model organisms. Mechanisms of effects of antioxidants, often due to indirect antioxidant action or to action not related to the antioxidant properties of the compounds administered, are discussed. The legitimacy of antioxidant supplementation in human is considered. PMID:24783202

  8. Antioxidant vitamin supplementation reduces arterial stiffness in adults: a systematic review and meta-analysis of randomized controlled trials.

    Science.gov (United States)

    Ashor, Ammar W; Siervo, Mario; Lara, Jose; Oggioni, Clio; Mathers, John C

    2014-10-01

    Several studies tested the effects of supplementation with antioxidant vitamins on arterial stiffness, but the results were contradictory. The aim of our study was to conduct a systematic review and meta-analysis investigating the effect of antioxidant vitamins on arterial stiffness and to determine whether the effects on arterial stiffness vary according to dose, duration of intervention, and health or nutritional status of the included participants. We searched 3 databases (Medline, Embase, and Scopus) for articles that potentially met the following eligibility criteria: 1) randomized controlled trials comparing antioxidant vitamins (vitamins C, E, and A and β-carotene) to either placebo or no active control in 2) adult participants aged ≥18 y; 3) antioxidant vitamins administered alone or in combination, irrespective of dose, duration, and route of administration; and 4) changes in arterial stiffness or arterial compliance. Data were pooled as standardized mean differences (SMDs) and analyzed using fixed- and random-effects models. Data synthesis showed that antioxidant vitamins reduced arterial stiffness significantly (SMD: -0.17; 95% CI: -0.26, -0.08; P Vitamin supplementation improved arterial stiffness irrespective of age group and duration of intervention. Antioxidant vitamins were more effective in participants with low baseline plasma concentrations of vitamins C (SMD: -0.35; 95% CI: -0.62, -0.07; P Supplementation with antioxidant vitamins has a small, protective effect on arterial stiffness. The effect may be augmented in those with lower baseline plasma vitamin E and C concentrations. This trial was registered at PROSPERO as CRD42014007260. © 2014 American Society for Nutrition.

  9. Antioxidant Enriched Fractions from Zingiber Officinale Roscoe

    Directory of Open Access Journals (Sweden)

    Ismail Rahath Kubra

    2011-01-01

    Full Text Available Ginger rhizome (Zingiber officinale Roscoe has many diverse properties and medicinal values such as antioxidant potential combined with the properties of a spice. Dried ginger (DG were extracted with aqueous ethanol and freeze-dried. The extract was evaluated for antioxidant potential, using 1,1'-diphenyl-2-picryl-hydrazyl radical scavenging, antioxidant capacity and reducing power assays. DG extract was further fractionated into methanol (Mfr and water-soluble (Wfr fractions. The Mfr exhibited higher antioxidant capacity when compared to DG extract. Higher antioxidant potential of the methanol fraction may be due to the presence higher polyphenols and [6]-gingerol content. This suggests that alcoholic soluble fraction possess enormous scope to enhance the antioxidant potential when used as a supplement in various food as well as pharmaceutical formulations / products.

  10. Antioxidant Activity from Various Tomato Processing

    Directory of Open Access Journals (Sweden)

    Retno Sri Iswari

    2016-04-01

    Full Text Available Tomato is one of the high antioxidant potential vegetables. Nowadays, there are many techniques of tomato processings instead of fresh consumption, i.e. boiled, steamed, juiced and sauteed. Every treatment of cooking will influence the chemical compound inside the fruits and the body's nutrition intake. It is important to conduct the research on antioxidant compound especially lycopene, β-carotene, vitamin C, α-tocopherol, and its activity after processing. This research has been done using the experimental method. Tomatoes were cooked into six difference ways, and then it was extracted using the same procedure continued with antioxidant measurement. The research results showed that steaming had promoted the higher antioxidant numbers (lycopene. α-tocopherol, β-carotene and vitamin C and higher TCA and antioxidant activities in the tomatoes than other processings. It was indicated that steaming was the best way to enhance amount, capacity and activities of antioxidants of the tomatoes.

  11. Antioxidants: Enhancing oral and general health

    Directory of Open Access Journals (Sweden)

    Arvind Shetti

    2009-01-01

    Full Text Available Free radicals and antioxidant therapy have attracted a great deal of attention in recent years. Antioxidants are compounds that destroy the free radicals in the body, thereby preventing harmful oxidation-reduction reactions. Antioxidants are critical for maintaining optimum health and well-being. The best sources of antioxidants are fruits and vegetables, which provide a variety of antioxidants such as Vitamins A, C, E, and carotenoids. Currently available data are compatible with the notion that these vitamins act as chemopreventives against some important cancers, e.g., carotenoids for lung cancer, ascorbic acid for salivary gland cancer, tocopherols for head and neck cancers, etc. Thus, a greater consumption of fruits and vegetables should be encouraged as they are the natural sources of these chemopreventive antioxidants along with other protective factors packaged by nature.

  12. Phenolipids as antioxidants in emulsified systems

    DEFF Research Database (Denmark)

    Sørensen, Ann-Dorit Moltke; Bayrasy, Christelle; Laguerre, Mickäel

    along with their corresponding alkyl esters (C4-C20). The methods used to evaluate the antioxidative effect of the different phenolipids were the CAT assay (o/w emulsion), antioxidant assays (DPPH, Iron chelating and reducing power) and partitioning studies. Moreover, the results from the CAT assay...... to an increase of the antioxidative effect. When the phenolic compound reaches a certain point of lipophilicity its antioxidative effect decreases. Thus, the polar paradox hypothesis is not valid when the alkyl chain length is above a certain length. Futhermore, the length of the alkyl chain for optimal...... antioxidant effect has been shown to be influenced by the specific phenolic compound and the type of emulsion. The overall aim for our work was to evaluate phenolipids with different lipophilicity as antioxidants in emulsified food. In the study presented here caffeic, ferulic and coumaric acid were selected...

  13. Effect of maxillary sinus floor augmentation without bone grafts

    Directory of Open Access Journals (Sweden)

    D Shiva Kumar

    2013-01-01

    Full Text Available Objective: The objective of the present review was to determine the effectiveness of maxillary sinus floor augmentation without bone grafts using lateral window technique. Materials and Methods: PubMed and Cochrane databases were searched for relevant articles. We also included articles by hand search until June 2012. The analysis included both human and animal studies which satisfied the following criteria: Minimum of 6 months follow-up, no use of bone grafts, and lateral window approach to the sinus. Results: We included 22 articles in the review. A descriptive analysis of the constructed evidence tables indicated that there is evidence of predictable a mount of bone formation in the maxillary sinus augmentation without the use of bone grafts. Conclusion: Within the limits of the articles and data available, maxillary sinus augmentation without bone graft might be considered effective inpredictable bone formation.

  14. AUGMENTED REALITY AS A TEACHING TOOL IN HIGHER EDUCATION

    Directory of Open Access Journals (Sweden)

    Tashko Rizov

    2015-06-01

    Full Text Available Rapid development of the technology has influenced its inevitable entrance in the learning processes. Teachers are often challenged to use the appropriate educational technology in the process of teaching in order to ease the learning process of students. Introducing new technology in the teaching process should utilize the new technology in any possible way in order to assist the teacher in transferring the knowledge and assist the students in grasping that knowledge. This paper should emphasize the benefits of using augmented reality in higher education, by measuring outcomes of the students which used augmented reality as a teaching tool in the courses. Results from the survey imply that students show significantly improved results in increasing the interest, understanding and interiorizing the learning material. University teachers found that using augmented reality is significantly improving the learning process of students and their teaching process in a pedagogical and technical sense. 

  15. Augmented-pressure colostogram in imperforate anus with fistula

    Energy Technology Data Exchange (ETDEWEB)

    Gross, G.W. (Jefferson Medical Coll., Philadelphia, PA (United States). Dept. of Radiology); Wolfson, P.J. (Jefferson Medical Coll., Philadelphia, PA (United States). Dept. of Surgery); Pena, A. (Schneider Children' s Hospital, Long Island Jewish Medical Center, New York, NY (United States). Dept. of Pediatric Surgery)

    1991-12-01

    Most newborns with imperforate anus, except for those with very low varieties, undergo a diverting colostomy performed in the postnatal period, with definitive surgical repair at a later age. Accurate demonstration of the anatomy of any associated fistula between the rectum and urogenital tract is essential for optimal surgical management. An augmented-pressure distal segment colostogram is recommended prior to definitive repair, both to confirm the level of rectal atresia and to define any associated fistulous communication. We report a case of high imperforate anus with rectourethral fistula in which the fistulous tract was not identified on the conventional contrast colostogram but was readily delineated when an augmented-pressure modification of the technique was utilized. The technical aspects of augmented-pressure colostography are presented. (orig.).

  16. A Foreign Language Learning Application using Mobile Augmented Reality

    Directory of Open Access Journals (Sweden)

    Florentin-Alexandru DITA

    2016-01-01

    Full Text Available In this paper is described a foreign language learning application using mobile augmented reality based on gamification method and text recognition. The mobile augmented reality is a technology that extends the real world elements with 2D or 3D computer generated objects and lets the users interact with them. A Gamification system is based on different mechanisms that increase the motivation of students, due to the impact that videogames have in their emotional, cognitive and social areas. The proposed solution applies Optical Character Recognition technique, using the camera of the mobile device, in order to identify the text written on a card. The implementation combines the features of gamification system and mobile augmented reality in order to make the learning process more easy and fun. This paper aims to present the results after testing the foreign language learning application in different scenarios.

  17. "Messing with the Mind: Evolutionary Challenges to Human Brain Augmentation

    Directory of Open Access Journals (Sweden)

    ARTHUR eSANIOTIS

    2014-09-01

    Full Text Available The issue of brain augmentation has received considerable scientific attention over the last two decades. A key factor to brain augmentation that has been widely overlooked are the complex evolutionary processes which have taken place in evolving the human brain to its current state of functioning. Like other bodily organs, the human brain has been subject to the forces of biological adaptation. The structure and function of the brain, is very complex and only now we are beginning to understand some of the basic concepts of cognition. Therefore, this article proposes that brain-machine interfacing and nootropics are not going to produce augmented brains because we do not understand enough about how evolutionary pressures have informed the neural networks which support human cognitive faculties.

  18. Bibliography on augmentation of convective heat and mass transfer

    Energy Technology Data Exchange (ETDEWEB)

    Bergles, A.E.; Webb, R.L.; Junkhan, G.H.; Jensen, M.K.

    1979-05-01

    Heat transfer augmentation has developed into a major specialty area in heat transfer research and development. A bibliography of world literature on augmentation is presented. The literature is classified into passive augmentation techniques, which require no external power, and active techniques, which do require external power. The fourteen techniques are grouped in terms of their application to the various modes of heat transfer. Mass transfer is included for completeness. Key words are included with each citation for technique/mode identification. The total number of publications cited is 1,967, including 75 surveys of various techniques and 42 papers on performance evaluation of passive techniques. Patents are not included as they will be the subject of a future topical report.

  19. Integration Of Sensor Orientation Data Into An Augmented Reality Technology

    Directory of Open Access Journals (Sweden)

    Edgaras Artemčiukas

    2014-05-01

    Full Text Available Currently, such microelectromechanical sensors as accelerome­ters, gyroscopes and magnetometers are the dominant sensors in mobile devices. The market of mobile devices is constantly expanding and focused on sensor integration process by adding supplementary functionality for the applications; therefore, it is possible to adapt these sensors for augmented reality technology solutions. Many augmented reality solutions are based on computer vision processing methods in order to identify and track markers or other objects. However, the main problem is chaotic environment, lighting conditions where object recognition and tracking in real-time becomes difficult and sometimes is an impossible process. This paper analyses possibilities to apply microelectromechanical sensors. Additionally, it investigates quaternion use for sensor data to estimate reliable and accurate camera orientation and represent virtual content in augmented reality technology.

  20. Augmented reality three-dimensional display with light field fusion.

    Science.gov (United States)

    Xie, Songlin; Wang, Peng; Sang, Xinzhu; Li, Chengyu

    2016-05-30

    A video see-through augmented reality three-dimensional display method is presented. The system that is used for dense viewpoint augmented reality presentation fuses the light fields of the real scene and the virtual model naturally. Inherently benefiting from the rich information of the light field, depth sense and occlusion can be handled under no priori depth information of the real scene. A series of processes are proposed to optimize the augmented reality performance. Experimental results show that the reconstructed fused 3D light field on the autostereoscopic display is well presented. The virtual model is naturally integrated into the real scene with a consistence between binocular parallax and monocular depth cues.

  1. Usability engineering: domain analysis activities for augmented-reality systems

    Science.gov (United States)

    Gabbard, Joseph; Swan, J. E., II; Hix, Deborah; Lanzagorta, Marco O.; Livingston, Mark; Brown, Dennis B.; Julier, Simon J.

    2002-05-01

    This paper discusses our usability engineering process for the Battlefield Augmented Reality System (BARS). Usability engineering is a structured, iterative, stepwise development process. Like the related disciplines of software and systems engineering, usability engineering is a combination of management principals and techniques, formal and semi- formal evaluation techniques, and computerized tools. BARS is an outdoor augmented reality system that displays heads- up battlefield intelligence information to a dismounted warrior. The paper discusses our general usability engineering process. We originally developed the process in the context of virtual reality applications, but in this work we are adapting the procedures to an augmented reality system. The focus of this paper is our work on domain analysis, the first activity of the usability engineering process. We describe our plans for and our progress to date on our domain analysis for BARS. We give results in terms of a specific urban battlefield use case we have designed.

  2. [Subantral augmentation with porous titanium in experiment and clinic].

    Science.gov (United States)

    Sirak, S V; Shchetinin, E V; Sletov, A A

    2016-01-01

    The article discusses the use of porous titanium for subantral augmentation. Experimental study was conducted on 12 yearling rams. Subantral augmentation using porous titanium was performed in 33 patients. In the control group consisting of 14 patients calcium phosphates and bone collagen based agents ("Bio-Оss" and "Collost") were used. In the main and control groups 46 and 32 implant were placed, respectively. Pilot histological and clinical studies proved that the granules of porous titanium are biocompatible with bone tissue, provide the optimal surface microrelief, thus creating good conditions for adhesion, expansion and migration of osteoforming cells, have negligible kinetics of resorption, are porous to ensure effective neovascularization of de novo formed bone tissue. Porous titanium is an effective alternative material for subantral bone augmentation for dental implantation and reconstructive operations on the maxillary sinus.

  3. Calibration, registration, and synchronization for high precision augmented reality haptics.

    Science.gov (United States)

    Harders, Matthias; Bianchi, Gérald; Knoerlein, Benjamin; Székely, Gábor

    2009-01-01

    In our current research we examine the application of visuo-haptic augmented reality setups in medical training. To this end, highly accurate calibration, system stability, and low latency are indispensable prerequisites. These are necessary to maintain user immersion and avoid breaks in presence which potentially diminish the training outcome. In this paper we describe the developed calibration methods for visuo-haptic integration, the hybrid tracking technique for stable alignment of the augmentation, and the distributed framework ensuring low latency and component synchronization. Finally, we outline an early prototype system based on the multimodal augmented reality framework. The latter allows colocated visuo-haptic interaction with real and virtual scene components in a simplified open surgery setting.

  4. [6]-Gingerol attenuates β-amyloid-induced oxidative cell death via fortifying cellular antioxidant defense system.

    Science.gov (United States)

    Lee, Chan; Park, Gyu Hwan; Kim, Chang-Yul; Jang, Jung-Hee

    2011-06-01

    β-Amyloid (Aβ) is involved in the formation of senile plaques, the typical neuropathological marker for Alzheimer's disease (AD) and has been reported to cause apoptosis in neurons via oxidative and/or nitrosative stress. In this study, we have investigated the neuroprotective effect and molecular mechanism of [6]-gingerol, a pungent ingredient of ginger against Αβ(25-35)-induced oxidative and/or nitrosative cell death in SH-SY5Y cells. [6]-Gingerol pretreatment protected against Aβ(25-35)-induced cytotoxicity and apoptotic cell death such as DNA fragmentation, disruption of mitochondrial membrane potential, elevated Bax/Bcl-2 ratio, and activation of caspase-3. To elucidate the neuroprotective mechanism of [6]-gingerol, we have examined Aβ(25-35)-induced oxidative and/or nitrosative stress and cellular antioxidant defense system against them. [6]-Gingerol effectively suppressed Aβ(25-35)-induced intracellular accumulation of reactive oxygen and/or nitrogen species and restored Aβ(25-35)-depleted endogenous antioxidant glutathione levels. Furthermore, [6]-gingerol treatment up-regulated the mRNA and protein expression of antioxidant enzymes such as γ-glutamylcysteine ligase (GCL) and heme oxygenase-1 (HO-1), the rate limiting enzymes in the glutathione biosynthesis and the degradation of heme, respectively. The expression of aforementioned antioxidant enzymes seemed to be mediated by activation of NF-E2-related factor 2 (Nrf2). These results suggest that [6]-gingerol exhibits preventive and/or therapeutic potential for the management of AD via augmentation of antioxidant capacity. Copyright © 2011 Elsevier Ltd. All rights reserved.

  5. Nr2e1 Deficiency Augments Palmitate-Induced Oxidative Stress in Beta Cells

    Directory of Open Access Journals (Sweden)

    Xiaoli Shi

    2016-01-01

    Full Text Available Nuclear receptor subfamily 2 group E member 1 (Nr2e1 has been regarded as an essential regulator of the growth of neural stem cells. However, its function elsewhere is unknown. In the present study, we generated Nr2e1 knockdown MIN6 cells and studied whether Nr2e1 knockdown affected basal beta cell functions such as proliferation, cell death, and insulin secretion. We showed that knockdown of Nr2e1 in MIN6 cells resulted in increased sensitivity to lipotoxicity, decreased proliferation, a partial G0/G1 cell-cycle arrest, and higher rates of apoptosis. Moreover, Nr2e1 deficiency exaggerates palmitate-induced impairment in insulin secretion. At the molecular level, Nr2e1 deficiency augments palmitate-induced oxidative stress. Nr2e1 deficiency also resulted in decreases in antioxidant enzymes and expression level of Nrf2. Together, this study indicated a potential protective effect of Nr2e1 on beta cells, which may serve as a target for the development of novel therapies for diabetes.

  6. Tuftsin Augments Antitumor Efficacy of Liposomized Etoposide against Fibrosarcoma in Swiss Albino Mice

    Science.gov (United States)

    Khan, Arif; Khan, Aijaz A; Dwivedi, Varun; Ahmad, Manzoor G; Hakeem, Seema; Owais, Mohammad

    2007-01-01

    Anticancer drugs are generally plagued by toxic manifestations at doses necessary for control of various forms of cancer. Incorporating such drugs into liposomes not only reduces toxicity but also enhances the therapeutic index. Some antioxidants and potent immunomodulators have also been shown to impart significant antitumor activity presumably by nonspecific activation of the host immune system. In the present study, we evaluated augmentation of the antitumor activity of etoposide (ETP) by the immunomodulator tuftsin in Swiss albino mice with fibrosarcoma. The efficacies of the free form of ETP, liposomized ETP (Lip-ETP), and tuftsin-bearing liposomized ETP (Tuft-Lip-ETP) formulations were evaluated on the basis of tumor regression, effect on expression level of p53wt and p53mut, and survival of the treated animals. Tuft-Lip-ETP, when administered at a dosage of 10 mg/kg body weight/day for five days, significantly reduced tumor volume, delayed tumor growth, and also up-regulated the expression of p53wt. In contrast, although Lip-ETP delayed tumor growth, it did not decrease tumor size. The results of the present study suggest that tuftsin incorporation in drug-loaded liposomes is a promising treatment strategy for various forms of cancers, including fibrosarcoma. PMID:17622310

  7. Motivational factors and psychological processes in cosmetic breast augmentation surgery.

    Science.gov (United States)

    Solvi, Anette S; Foss, Kaja; von Soest, Tilmann; Roald, Helge E; Skolleborg, Knut C; Holte, Arne

    2010-04-01

    We investigated how and why prospective cosmetic breast augmentation patients decide to undergo such surgery. The results can offer important insights to plastic surgeons in addressing their patients' motives and expectations, and thereby avoiding potential patient dissatisfaction and disappointment. It is also a necessary first step to better understand the increasing tendency among women in the Western society to seek cosmetic breast augmentation. A qualitative, descriptive and phenomenological design was employed. Fourteen female prospective breast augmentation patients, aged 19-46 years, were recruited from a private plastic surgery clinic and interviewed in depth based on an informant-centred format. The interviews were tape-recorded, transcribed verbatim and coded and analysed phenomenologically using a QSR-N*Vivo software program. We detected four psychological processes associated with cosmetic breast augmentation surgery (create, improve, repair and restore). The data could further be categorised into one basic drive (femininity), six generating factors (appearance dissatisfaction, ideal figure, self-esteem, comments, clothes and sexuality) and five eliciting factors motivating the decision (media, knowledge of former patients, physicians, finances and romantic partner). These new insights into how and why women seek cosmetic breast augmentation may aid plastic surgeons in enhancing their communication with patients. This can be achieved by addressing the patient's psychological process and motives, and thereby better assist them in making the best decision possible in their particular situation. It may also lay the groundwork for future quantitative studies on the prevalence of certain motives for undergoing such surgery and, as such, help explain the increasing popularity of cosmetic breast-augmentation surgery. Copyright 2009 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.

  8. Partitioning of selected antioxidants in mayonnaise

    DEFF Research Database (Denmark)

    Jacobsen, Charlotte; Schwarz, K.; Stockmann, H.

    1999-01-01

    This study examined partitioning of alpha-, beta-, and gamma- tocopherol and six polar antioxidants (Trolox, ferulic acid, caffeic acid, propyl gallate, gallic acid, and catechin) in mayonnaise. Partitioning of antioxidants between different phases was determined after separation of mayonnaise...... acid and catechin) to 83% (Trolox). Accordingly, proportions of 6% (Trolox) to 80% (gallic acid and catechin) were found in the aqueous phase. Similar trends were observed after dialysis. After ultracentrifugation, large proportions of polar antioxidants were found in the "emulsion phase...

  9. Natural Antioxidants: Fascinating or Mythical Biomolecules?

    OpenAIRE

    Johannes Van Staden; Mack Moyo; Ashwell R. Ndhlala

    2010-01-01

    Research on the use, properties, characteristics and sources of antioxidants especially phenolic compounds, flavonoids, vitamins, synthetic chemicals and some micronutrients began in the late 18th century. Since then antioxidant research has received considerable attention and over a hundred thousand papers have been published on the subject. This has led to a rampant use of antioxidants in order to try to obtain and preserve optimal health. A number of nutraceuticals and food supplements are...

  10. Evaluation on Antioxidant Effect of Xanthohumol by Different Antioxidant Capacity Analytical Methods

    OpenAIRE

    Xiu-Li Zhang; Yong-Dong Zhang; Tao Wang; Hong-Yun Guo; Qi-Ming Liu; Hai-Xiang Su

    2014-01-01

    Several assays have been frequently used to estimate antioxidant capacities including ABTS•+, DPPH, and FRAP assays. Xanthohumol (XN), the major prenylated flavonoid contained in beer, witnessed various reports on its antioxidant capacity. We systematically evaluated the antioxidant activity of XN using three systems, 2,2,-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS•+) scavenging assays, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical assays, and ferric reducing antioxidant power (FRA...

  11. Antioxidants and embryo phenotype: is there experimental evidence for strong integration of the antioxidant system?

    Science.gov (United States)

    Possenti, Cristina Daniela; Karadas, Filiz; Colombo, Graziano; Caprioli, Manuela; Rubolini, Diego; Milzani, Aldo; Donne, Isabella Dalle; Saino, Nicola; Parolini, Marco

    2017-02-15

    Organisms have evolved complex defense systems against oxidative stress. Bird eggs contain maternally derived antioxidants that protect embryos from oxidative damage. The antioxidant system components are thought to be integrated, but few studies have analyzed the covariation between antioxidant concentrations, embryo 'oxidative status' and morphology. In addition, no study has tested the effects of experimental change in yolk antioxidant concentration on other antioxidants, on their reciprocal relationships and on their relationships with embryo oxidative status or growth, which are expected if antioxidants defenses are integrated. In yellow-legged gull (Larus michahellis) embryos, we analyzed the covariation between several antioxidants, markers of 'oxidative status' [total antioxidant capacity (TAC), concentration of pro-oxidants (TOS), lipid peroxidation (LPO) and protein carbonylation (PC)] in the yolk, liver and brain, and morphology. Yolk and liver antioxidant concentrations were positively correlated reciprocally and with embryo size, and positively predicted TAC but not oxidative status. TOS and LPO were positively correlated in the liver, while TAC and LPO were negatively correlated in the brain. Weak relationships existed between antioxidants and TOS, PC and LPO. The effects of antioxidants on oxidative status and morphology were non-synergistic. An experimental physiological increase in yolk vitamin E had very weak effects on the relationships between other antioxidants or oxidative status and vitamin E concentration, the concentration of other antioxidants or oxidative status; the covariation between other antioxidants and oxidative status, and relationships between morphology or oxidative status and other antioxidants, challenging the common wisdom of strong functional relationships among antioxidants, at least for embryos in the wild. © 2017. Published by The Company of Biologists Ltd.

  12. Synergy of hard and soft tissue augmentation around implants

    Directory of Open Access Journals (Sweden)

    Neel Bhatavadekar

    2015-01-01

    Full Text Available With the advent of dental implants, alveolar defects with insufficient bone height and width have emerged as an area of great concern. Since the overlying soft tissue forms the chief component of any esthetic effect, the maintenance and augmentation of the soft tissue emerged an area of concern and focus. This review discusses the synergy of hard and soft tissue augmentation around implants. The reader is introduced to the fundamental concepts of bone grafting,and guided to the sequence of treatment and treatment options that exist for ensuring optimum peri-implant esthetic and functional results.

  13. Augmented exercise biking with virtual environments for elderly users

    DEFF Research Database (Denmark)

    Bruun-Pedersen, Jon Ram; Pedersen, Kasper Søndergaard; Serafin, Stefania

    2014-01-01

    Virtual reality (VR) has been shown to function well as an assistive technology to physical therapy for elderly users. Elderly users are a unique user group in this field, due to their characteristics and demands. They are also a user group that can definitely benefit from VR technology, which...... routine. The results showed that a majority of subjects reported to support the VE augmentation and preferred the VE based exercise experience to the conventional exercise. This supports VR as an assisting technology for physical therapy, and suggests the potentiality VE augmented exercises, tailored...

  14. Experimental Investigations of Generalized Predictive Control for Tiltrotor Stability Augmentation

    Science.gov (United States)

    Nixon, Mark W.; Langston, Chester W.; Singleton, Jeffrey D.; Piatak, David J.; Kvaternik, Raymond G.; Bennett, Richard L.; Brown, Ross K.

    2001-01-01

    A team of researchers from the Army Research Laboratory, NASA Langley Research Center (LaRC), and Bell Helicopter-Textron, Inc. have completed hover-cell and wind-tunnel testing of a 1/5-size aeroelastically-scaled tiltrotor model using a new active control system for stability augmentation. The active system is based on a generalized predictive control (GPC) algorithm originally developed at NASA LaRC in 1997 for un-known disturbance rejection. Results of these investigations show that GPC combined with an active swashplate can significantly augment the damping and stability of tiltrotors in both hover and high-speed flight.

  15. The Future of Learning and Training in Augmented Reality

    Directory of Open Access Journals (Sweden)

    Kangdon Lee

    2012-08-01

    Full Text Available Students acquire knowledge and skills through different modes of instruction that include classroom lectures with textbooks, computers, and the like. The availability and choice of learning innovation depends on the individual’s access to technologies and on the infrastructure environment of the surrounding community. In this rapidly changing society, information needs to be adopted and applied at the right time and right place to maintain efficiency in all settings. Augmented reality is one technology that dramatically shifts the timing and location of learning. This paper describes augmented reality, how it applies to learning, and its potential impact on future education.

  16. Il telerilevamento a supporto dell’Augmented Reality

    OpenAIRE

    Filippo Gemma

    2011-01-01

    Fondere insieme realtà e oggetti virtuali per muoversi al meglio con efficacia ed efficienza è quanto si propone, tramite la  Realtà Aumentata, la AGI, Analytical Graphics Inc. di Exton (USA), distribuita in esclusiva in Italia da GMSPAZIO che offre il sistema STK, storicamente conosciuto come Satellite ToolKit che offre più di quarantamila utenti nel mondo un esteso set di funzionalità capaci di soddisfare ogni tipo di esigenza.Remote  Sensing  and  Augmented RealityAugmented reality has bee...

  17. Augmented Reality in the environment of Heritage Building

    Directory of Open Access Journals (Sweden)

    Gerson José de Mattos Freire

    2012-11-01

    Full Text Available The placement of elements that enhance the ambiance in assets and historic sites can serve to supply evidence to a greater understanding of the events associated with these sites. The functional organization grows in importance within the historic buildings, by the need to transmit the historical context of the time and the experience associated to the experience of the place. Technical augmented reality can simplify this transmission, valuing the equity and providing them with an overview of the proposed experiments. This paper discusses the technologies available and a methodological framework for the use of Augmented Reality in the context of historical heritage.

  18. Bromocriptine augmentation therapy in a patient with Cotard's syndrome.

    Science.gov (United States)

    Kondo, Shuko; Hayashi, Hiroshi; Eguchi, Takuya; Oyama, Takanobu; Wada, Tadashi; Otani, Koichi

    2003-06-01

    A 72-year-old female with bipolar I disorder developed Cotard's syndrome, i.e., various delusions of negation accompanied by severe depressive symptoms. She responded neither to the combination of antipsychotic drug and antidepressant nor to the lithium augmentation therapy. However, the delusions and depressive symptoms improved dramatically after the addition of bromocriptine 2.5-5 mg/day to the combination of clomipramine and lithium. This report suggests that bromocriptine augmentation therapy might be effective at least for some patients with Cotard's syndrome in mood disorders.

  19. Breast Imaging after Breast Augmentation with Autologous Tissues

    Energy Technology Data Exchange (ETDEWEB)

    Hwang, Kyu Won; Seo, Bo Kyung; Shim, Eddeum; Song, Sung Eun; Cho, Kyu Ran [Dept. of Radiology, Korea University Anam Hospital, Seoul (Korea, Republic of); Yoon, Eul Sik [Korea University Ansan Hospital, Ansan (Korea, Republic of); Woo, Ok Hee [Dept. of Radiology, Korea University Guro Hospital, Seoul (Korea, Republic of)

    2012-06-15

    The use of autologous tissue transfer for breast augmentation is an alternative to using foreign implant materials. The benefits of this method are the removal of unwanted fat from other body parts, no risk of implant rupture, and the same feel as real breast tissue. However, sometimes there is a dilemma about whether or not to biopsy for calcifications or masses detected after the procedure is completed. The purpose of this study is to illustrate the procedures of breast augmentation with autologous tissues, the imaging features of various complications, and the role of imaging in the diagnosis and management of complications and hidden breast diseases.

  20. Soft tissue augmentation - Use of hyaluronic acid as dermal filler

    Directory of Open Access Journals (Sweden)

    Vedamurthy Maya

    2004-01-01

    Full Text Available Soft tissue augmentation has revolutionized the treatment of the aging face. It is a technique in which a substance is injected under the skin. The concept of utilizing materials for soft tissue augmentation actually began around 1950 with the use of fluid silicone. Today we have a large armamentarium of implant materials to delay the tell tale signs of aging. Filling has replaced conventional surgery in facial rejuvenation. In this article, the emphasis will be on hyaluronic acid as this substance is easily available in India and ranks among the most widely used dermal fillers.

  1. Reality Check: Basics of Augmented, Virtual, and Mixed Reality.

    Science.gov (United States)

    Brigham, Tara J

    2017-01-01

    Augmented, virtual, and mixed reality applications all aim to enhance a user's current experience or reality. While variations of this technology are not new, within the last few years there has been a significant increase in the number of artificial reality devices or applications available to the general public. This column will explain the difference between augmented, virtual, and mixed reality and how each application might be useful in libraries. It will also provide an overview of the concerns surrounding these different reality applications and describe how and where they are currently being used.

  2. Larvicidal, nematicidal, antifeedant and antifungal, antioxidant ...

    African Journals Online (AJOL)

    Larvicidal, nematicidal, antifeedant and antifungal, antioxidant activities of Mentha spicata (Lamiaceae) root extracts. Abdullah Alaklabi, Ibrahim A. Arif, Anis Ahamed, Aseer Manilal, Radhakrishnan Surendrakumar, Akbar Idhayadhulla ...

  3. Bioactive content, hepatoprotective and antioxidant activities of ...

    African Journals Online (AJOL)

    Bioactive content, hepatoprotective and antioxidant activities of whole plant extract of Micromeria fruticosa (L) Druce ssp Serpyllifolia F Lamiaceae against Carbon tetrachloride-induced hepatotoxicity in mice.

  4. Antioxidants in Raspberry: On-line analysis links antioxidant activity to a diversity of individual metabolites

    NARCIS (Netherlands)

    Beekwilder, M.J.; Jonker, H.H.; Hall, R.D.; Meer, van der I.M.; Vos, de C.H.

    2005-01-01

    The presence of antioxidant compounds can be considered as a quality parameter for edible fruit. In this paper, we studied the antioxidant compounds in raspberry (Rubus idaeus) fruits by high-performance liquid chromatography (HPLC) coupled to an on-line postcolumn antioxidant detection system. Both

  5. Soluble Antioxidant Compounds Regenerate the Antioxidants Bound to Insoluble Parts of Foods

    NARCIS (Netherlands)

    Celik, E.E.; Gökmen, V.; Fogliano, V.

    2013-01-01

    This study aimed to investigate the regeneration potential of antioxidant capacity of an insoluble food matrix. Investigations were performed in vitro with several food matrices rich in dietary fiber (DF) and bound antioxidants. After removal of the soluble fraction, the antioxidant capacity (AC) of

  6. Women with endometriosis improved their peripheral antioxidant markers after the application of a high antioxidant diet

    Directory of Open Access Journals (Sweden)

    Casanueva Esther

    2009-05-01

    Full Text Available Abstract Background Oxidative stress has been identified in the peritoneal fluid and peripheral blood of women with endometriosis. However, there is little information on the antioxidant intake for this group of women. The objectives of this work were 1 to compare the antioxidant intake among women with and without endometriosis and 2 to design and apply a high antioxidant diet to evaluate its capacity to reduce oxidative stress markers and improve antioxidant markers in the peripheral blood of women with endometriosis. Methods Women with (WEN, n = 83 and without endometriosis (WWE, n = 80 were interviewed using a Food Frequency Questionnaire to compare their antioxidant intake (of vitamins and minerals. Then, the WEN participated in the application of a control (n = 35 and high antioxidant diet (n = 37 for four months. The high antioxidant diet (HAD guaranteed the intake of 150% of the suggested daily intake of vitamin A (1050 μg retinol equivalents, 660% of the recommended daily intake (RDI of vitamin C (500 mg and 133% of the RDI of vitamin E (20 mg. Oxidative stress and antioxidant markers (vitamins and antioxidant enzymatic activity were determined in plasma every month. Results Comparison of antioxidant intake between WWE and WEN showed a lower intake of vitamins A, C, E, zinc, and copper by WEN (p Conclusion WEN had a lower intake of antioxidants in comparison to WWE. Peripheral oxidative stress markers diminished, and antioxidant markers were enhanced, in WEN after the application of the HAD.

  7. Pomegranate Juice Augments Memory and fMRI Activity in Middle-Aged and Older Adults with Mild Memory Complaints

    Directory of Open Access Journals (Sweden)

    Susan Y. Bookheimer

    2013-01-01

    Full Text Available Despite increasing emphasis on the potential of dietary antioxidants in preventing memory loss and on diet as a precursor of neurological health, rigorous studies investigating the cognitive effects of foods and their components are rare. Recent animal studies have reported memory and other cognitive benefits of polyphenols, found abundantly in pomegranate juice. We performed a preliminary, placebo-controlled randomized trial of pomegranate juice in older subjects with age-associated memory complaints using memory testing and functional brain activation (fMRI as outcome measures. Thirty-two subjects (28 completers were randomly assigned to drink 8 ounces of either pomegranate juice or a flavor-matched placebo drink for 4 weeks. Subjects received memory testing, fMRI scans during cognitive tasks, and blood draws for peripheral biomarkers before and after the intervention. Investigators and subjects were all blind to group membership. After 4 weeks, only the pomegranate group showed a significant improvement in the Buschke selective reminding test of verbal memory and a significant increase in plasma trolox-equivalent antioxidant capacity (TEAC and urolithin A-glucuronide. Furthermore, compared to the placebo group, the pomegranate group had increased fMRI activity during verbal and visual memory tasks. While preliminary, these results suggest a role for pomegranate juice in augmenting memory function through task-related increases in functional brain activity.

  8. Augmented Reality Experience: From High-Resolution Acquisition to Real Time Augmented Contents

    Directory of Open Access Journals (Sweden)

    Paolo Clini

    2014-01-01

    Full Text Available This paper presents results of a research project “dUcale” that experiments ICT solutions for the museum of Palazzo Ducale (Urbino. In this project, the famed painting the “Città Ideale” becomes a case to exemplify a specific approach to the digital mediation of cultural heritage. An augmented reality (AR mobile application, able to enhance the museum visit experience, is presented. The computing technologies involved in the project (websites, desktop and social applications, mobile software, and AR constitute a persuasive environment for the artwork knowledge. The overall goal of our research is to provide to cultural institutions best practices efficiently on low budgets. Therefore, we present a low cost method for high-resolution acquisition of paintings; the image is used as a base in AR approach. The proposed methodology consists of an improved SIFT extractor for real time image. The other novelty of this work is the multipoint probabilistic layer. Experimental results demonstrated the robustness of the proposed approach with extensive use of the AR application in front of the “Città Ideale” painting. To prove the usability of the application and to ensure a good user experience, we also carried out several users tests in the real scenario.

  9. Augmenting your own reality: student authoring of science-based augmented reality games.

    Science.gov (United States)

    Klopfer, Eric; Sheldon, Josh

    2010-01-01

    Augmented Reality (AR) simulations superimpose a virtual overlay of data and interactions onto a real-world context. The simulation engine at the heart of this technology is built to afford elements of game play that support explorations and learning in students' natural context--their own community and surroundings. In one of the more recent games, TimeLab 2100, players role-play citizens of the early 22nd century when global climate change is out of control. Through AR, they see their community as it might be nearly one hundred years in the future. TimeLab and other similar AR games balance location specificity and portability--they are games that are tied to a location and games that are movable from place to place. Focusing students on developing their own AR games provides the best of both virtual and physical worlds: a more portable solution that deeply connects young people to their own surroundings. A series of initiatives has focused on technical and pedagogical solutions to supporting students authoring their own games.

  10. In vitro antioxidant activity of Vetiveria zizanioides root extract

    African Journals Online (AJOL)

    lmboera

    anion radical scavenging activity, deoxyribose degradation assay, total antioxidant capacity, total phenolics and total flavonoid composition. The various antioxidant activities were compared with suitable antioxidants such as butyl hydroxy toluene, ascorbic acid, quercetin, alpha tocopherol, pyrocatechol and curcumin ...

  11. The induction of salt stress tolerance by propyl gallate treatment in green microalga Dunaliella bardawil, through enhancing ascorbate pool and antioxidant enzymes activity.

    Science.gov (United States)

    Einali, Alireza

    2017-10-08

    The effect of propyl gallate (PG), a synthetic antioxidant, on antioxidant responses and salinity tolerance was investigated in the cells of the green microalga, Dunaliella bardawil. Algal suspensions grown at three salinity levels of 1, 2, and 3 M NaCl were incubated with 1 mM of PG. The number of cells was significantly lower in all PG-treated cells compared to untreated controls. Despite PG-induced cell death, the fresh weight of all PG-treated cells was considerably higher than controls. PG-treated cells had enhanced antioxidant capacity because of increased levels of Chlorophyll a, β-carotene, reduced ascorbate, protein, and enzymatic activities, but accumulated lower levels of malonyldialdehyde and hydrogen peroxide compared to untreated cells. The results suggest that PG acts as a signal molecule both directly by reducing of free radical oxidants and indirectly by augmenting ascorbate pool levels, β-carotene production, and antioxidant enzymes activity to boost the capacity of antioxidant systems and radical oxygen species scavenging. Therefore, induction of salt stress tolerance by PG in D. bardawil is associated with metabolic adjustments through activation or synthesis of both enzymatic and non-enzymatic molecules involved in antioxidant systems.

  12. Suppression of high pacing-induced ANP secretion by antioxidants in isolated rat atria.

    Science.gov (United States)

    Gao, Shan; Yuan, Kuichang; Shah, Amin; Kim, Jong Suk; Park, Woo Hyun; Kim, Suhn Hee

    2011-12-01

    Reactive oxygen species (ROS) are formed as a natural by-product of the normal metabolism of oxygen and have important roles in cell signaling. The aim of this study was to investigate direct effects of ROS on atrial hemodynamics and ANP secretion in isolated perfused beating rat atria with antioxidants. When atria were paced at 1.2 Hz, N-acetyl cystein (antioxidant, NAC), α-lipoic acid (antioxidant), tempol (superoxide dismutase mimic), and apocynin (NADPH oxidase inhibitor; NOX inhibitor) did not affect ANP secretion and atrial contractility. When pacing frequency was increased from 1.2 Hz to 4 Hz, the ANP secretion increased and atrial contractility decreased. H(2)O(2) level was increased in perfusate obtained from atria stimulated by high pacing frequency. NAC, α-lipoic acid and tempol attenuated high pacing frequency-induced ANP secretion but apocynin did not. In contrast, pyrogallol (a superoxide generator) augmented high pacing frequency-induced ANP secretion. NOX-4 protein was increased by high pacing stimulation and in diabetic rat atria. In diabetic rat atria, high pacing frequency caused an increased ANP secretion and a decreased atrial contractility, that were markedly attenuated as compared to control rats. NAC and apocynin reduced high pacing frequency-induced ANP secretion in diabetic rat atria. These results suggest that intracellular ROS formation partly through an increasing NOX activity in response to high pacing frequency is associated with an increased ANP secretion in rat atria. Copyright © 2011 Elsevier Inc. All rights reserved.

  13. Oxytocin augmentation: Poison or potion in the multipara? | Cluver ...

    African Journals Online (AJOL)

    Oxytocin is one of the most commonly used drugs in obstetric practice but it is also the drug associated with the most preventable adverse events in childbirth. In this review we look at the use of oxytocin augmentation in the multigravida. We look at the concept of whether the multigravida is different to the primigravida.

  14. Multimodal augmented reality : the norm rather than the exception

    NARCIS (Netherlands)

    Schraffenberger, Hanna; van der Heide, Edwin

    2016-01-01

    Augmented reality (AR) is commonly seen as a technology that overlays virtual imagery onto a participant's view of the world. In line with this, most AR research is focused on what we see. In this paper, we challenge this focus on vision and make a case for an experience-focused and

  15. Augmented Reality Based Doppler Lidar Data Visualization: Promises and Challenges

    Directory of Open Access Journals (Sweden)

    Cherukuru N. W.

    2016-01-01

    As a proof of concept, we used the lidar data from a recent field campaign and developed a smartphone application to view the lidar scan in augmented reality. In this paper, we give a brief methodology of this feasibility study, present the challenges and promises of using AR technology in conjunction with Doppler wind lidars.

  16. The Application of Augmented Reality Technology in Food Professional Education

    OpenAIRE

    Wei Shan

    2015-01-01

    This study presents the application of augmented reality technology in food professional education, combining with the current situation of applying virtual reality education, analyzes the problems existing in the virtual reality application in food professional education, puts forward some suggestions and finally prospects the developing trend of the technology of virtual reality now.

  17. Learning Molecular Structures in a Tangible Augmented Reality Environment

    Science.gov (United States)

    Asai, Kikuo; Takase, Norio

    This article presents the characteristics of using a tangible table top environment produced by augmented reality (AR), aimed at improving the environment in which learners observe three-dimensional molecular structures. The authors perform two evaluation experiments. A performance test for a user interface demonstrates that learners with a…

  18. The augment and {mu-} reduction in Bantu: An Optimality Theory ...

    African Journals Online (AJOL)

    In isiZulu, the resultant nasal is syllabic and does not assimilate to the place of articulation of the following consonant. In siSwati, the nasal is non-syllabic, functions as the coda of the immediately preceding vowel (the augment) and does not assimilate to the place of articulation of the following consonant. In both isiZulu and ...

  19. Usage of Microsoft Kinect for augmented prototyping speed-up

    Directory of Open Access Journals (Sweden)

    Jaromír Landa

    2012-01-01

    Full Text Available Physical model is a common tool for testing of the product features during the design process. This model is usually made of clay or plastic because of the modifiability of these materials. Therefore, the designer could easily adjust the model shape to enhance the look or ergonomics of the product. Nowadays, some companies use augmented reality to enhance their design process. This concept is called augmented prototyping. Common approach uses artificial markers to augment the product prototype by digital 3D models. These 3D models that are shown on the markers positions can represent e.g. car spare parts such as different lights, wheels, spoiler etc. This allows the designer interactively change the look of the physical model. Further, it is also necessary to transfer physical adjustments made on the model surface back to the computer digital model. Well-known tool for this purpose a professional 3D scanner. Nevertheless, the cost of such scanner is substantial. Therefore, we focused on different solution – a motion capture device Microsoft Kinect that is used for computer games. This article outlines a new augmented prototyping approach that directly updates the digital model during the design process using Kinect depth camera. This solution is a cost effective alternative to the professional 3D scanners. Our article describes especially how depth data can be obtained by the Kinect and also provides an evaluation of depth measurement precision.

  20. LBAS: Lanczos Bidiagonalization with Subspace Augmentation for Discrete Inverse Problems

    DEFF Research Database (Denmark)

    Hansen, Per Christian; Abe, Kyniyoshi

    The regularizing properties of Lanczos bidiagonalization are powerful when the underlying Krylov subspace captures the dominating components of the solution. In some applications the regularized solution can be further improved by augmenting the Krylov subspace with a low-dimensional subspace tha...