WorldWideScience

Sample records for anchors mooring devices

  1. Mooring Anchors for Marine Renewable Energy Foundations

    OpenAIRE

    Stevens, Robert F.; Rahim, Amir

    2014-01-01

    With the increasing use of offshore wind turbines, it has become necessary to explore deep-water sites for locating wind farms. Floating turbines are an ideal choice for these locations. Such turbines are anchored with mooring chains to the sea floor using suction anchors, driven piles or gravity foundations. This paper presents design methods for these types of foundations. Moored gravity foundations have been used for the much larger floating oil and gas installations. These concrete founda...

  2. A new device for monitoring moorings

    Digital Repository Service at National Institute of Oceanography (India)

    Namboothiri, E.G.; Krishnakumar, V.

    . The inwater unit of MMU can be easily attached to the mooring line. It produces acoustic signals at desired intervals. These signals are received through a hydrophone receiver of the MMU's deck unit which converts them in to audible sound signals. The signals...

  3. Development of mooring-anchor program in public domain for coupling with floater program for FOWTs (Floating Offshore Wind Turbines)

    Energy Technology Data Exchange (ETDEWEB)

    Kim, MooHyun [American Bureau of Shipping (ABS), Houston, TX (United States)

    2014-08-01

    This report presents the development of offshore anchor data sets which are intended to be used to develop a database that allows preliminary selection and sizing of anchors for the conceptual design of floating offshore wind turbines (FOWTs). The study is part of a project entitled “Development of Mooring-Anchor Program in Public Domain for Coupling with Floater Program for FOWTs (Floating Offshore Wind Turbines)”, under the direction of Dr. Moo-Hyun Kim at the Texas A&M University and with the sponsorship from the US Department of Energy (Contract No. DE-EE0005479, CFDA # 81.087 for DE-FOA-0000415, Topic Area 1.3: Subsurface Mooring and Anchoring Dynamics Models).

  4. Beyond Moore's law: towards competitive quantum devices

    Science.gov (United States)

    Troyer, Matthias

    2015-05-01

    A century after the invention of quantum theory and fifty years after Bell's inequality we see the first quantum devices emerge as products that aim to be competitive with the best classical computing devices. While a universal quantum computer of non-trivial size is still out of reach there exist a number commercial and experimental devices: quantum random number generators, quantum simulators and quantum annealers. In this colloquium I will present some of these devices and validation tests we performed on them. Quantum random number generators use the inherent randomness in quantum measurements to produce true random numbers, unlike classical pseudorandom number generators which are inherently deterministic. Optical lattice emulators use ultracold atomic gases in optical lattices to mimic typical models of condensed matter physics. In my talk I will focus especially on the devices built by Canadian company D-Wave systems, which are special purpose quantum simulators for solving hard classical optimization problems. I will review the controversy around the quantum nature of these devices and will compare them to state of the art classical algorithms. I will end with an outlook towards universal quantum computing and end with the question: which important problems that are intractable even for post-exa-scale classical computers could we expect to solve once we have a universal quantum computer?

  5. 30 CFR 57.9311 - Anchoring stationary sizing devices.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Anchoring stationary sizing devices. 57.9311 Section 57.9311 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND... Dumping Sites § 57.9311 Anchoring stationary sizing devices. Grizzlies and other stationary sizing...

  6. 30 CFR 56.9311 - Anchoring stationary sizing devices.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Anchoring stationary sizing devices. 56.9311 Section 56.9311 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND... Dumping Sites § 56.9311 Anchoring stationary sizing devices. Grizzlies and other stationary sizing...

  7. Developments, expectations of wave energy converters and mooring anchors in the UK

    Science.gov (United States)

    Huang, Ming; Aggidis, G. A.

    2008-02-01

    The paper introduces the important developments of Wave Energy Converters (WECs) in the UK, and the generic anchor types for WECs and similar structures. Several WECs and their characteristics are introduced to explain the development direction. The anchors are discussed in relation to the behaviour and performance of WECs, and comparisons are made with similar aspects of the offshore industry. Typical and desirable features of anchors for WECs are summarized. Additionally, expectations and research suggestions for WECs and their anchor design are presented.

  8. Neurostimulation leads, intrathecal catheters and anchoring devices evolution

    Directory of Open Access Journals (Sweden)

    Laura Demartini

    2015-03-01

    Full Text Available Many scientific studies highlight the usefulness of spinal cord stimulation and intrathecal therapy for the management of chronic pain syndromes resistant to pharmacological or less invasive interventional therapies. One of the possible complications of these techniques, reported in literature, is migration of the lead or catheter; thus the use of an anchoring system is considered mandatory. Every company that produces devices for neurostimulation or neuromodulation provides various anchoring devices evolved over time. In the study, the authors discuss about the most common anchoring devices based on their clinical experience.

  9. Neurostimulation leads, intrathecal catheters and anchoring devices evolution

    OpenAIRE

    Laura Demartini; Gianluca Conversa; Luciana Armiento; Lucia Angelini; Cesare Bonezzi

    2015-01-01

    Many scientific studies highlight the usefulness of spinal cord stimulation and intrathecal therapy for the management of chronic pain syndromes resistant to pharmacological or less invasive interventional therapies. One of the possible complications of these techniques, reported in literature, is migration of the lead or catheter; thus the use of an anchoring system is considered mandatory. Every company that produces devices for neurostimulation or neuromodulation provides various anchoring...

  10. Deepwater overflow observed by three bottom-anchored moorings in the Bashi Channel

    Science.gov (United States)

    Zhao, Xiaolong; Zhou, Chun; Zhao, Wei; Tian, Jiwei; Xu, Xiaobiao

    2016-04-01

    Three moorings equipped with 10 current meters and 7 CTDs were deployed in the Bashi Channel, the main deep connection between the northwestern Pacific Ocean and the South China Sea, from August 2010 to April 2011 to investigate the deepwater overflow of the North Pacific Deep Water through it. Results from these observations provide, for the first time, valuable information on the spatial structure of the deep current and allow us to estimate the overflow transport with greater accuracy. The observed current is coherent both vertically and horizontally but exhibits a much stronger velocity in the central area compared to near the edges of the channel. The core of the overflow is found near 2600 m, with mean velocity, potential temperature, and salinity of 22.5 cm s-1, 1.79 °C, and 34.64 psu, respectively. The current is approximately geostrophic, with isopycnals sloping upward to the right-hand side of the flow. The local Froude number is found much less than 1, implying that the deep flow in the Bashi Channel could not be hydraulically controlled. The observations yield an 8-month mean transport of 0.78 Sv with an rms error of 0.18 Sv. The transport time series exhibits significant intraseasonal variabilities, including variability on time scale close to the resonance period of the deep channel in the Luzon Strait (~30 days). Higher transports are connected with a higher velocity and a thicker overflow layer, allowing colder and saltier (thus denser) North Pacific Deep Water to flow into the South China Sea.

  11. 33 CFR 88.13 - Lights on moored barges.

    Science.gov (United States)

    2010-07-01

    ... barges at anchor or made fast to one or more mooring buoys or other similar device, in lieu of the... this section: (1) A barge or group of barges moored in a slip or slough used primarily for mooring... areas are as follows: Chicago Sanitary Ship Canal (1) Mile 293.2 to 293.9 (3) Mile 295.2 to 296.1...

  12. Wireless and acoustic hearing with bone-anchored hearing devices

    Science.gov (United States)

    Bosman, Arjan J.; Mylanus, Emmanuel A.M.; Hol, Myrthe K.S.; Snik, Ad F.M.

    2016-01-01

    Abstract Objective: The efficacy of wireless connectivity in bone-anchored hearing was studied by comparing the wireless and acoustic performance of the Ponto Plus sound processor from Oticon Medical relative to the acoustic performance of its predecessor, the Ponto Pro. Study sample: Nineteen subjects with more than two years' experience with a bone-anchored hearing device were included. Thirteen subjects were fitted unilaterally and six bilaterally. Design: Subjects served as their own control. First, subjects were tested with the Ponto Pro processor. After a four-week acclimatization period performance the Ponto Plus processor was measured. In the laboratory wireless and acoustic input levels were made equal. In daily life equal settings of wireless and acoustic input were used when watching TV, however when using the telephone the acoustic input was reduced by 9 dB relative to the wireless input. Results: Speech scores for microphone with Ponto Pro and for both input modes of the Ponto Plus processor were essentially equal when equal input levels of wireless and microphone inputs were used. Only the TV-condition showed a statistically significant (p <5%) lower speech reception threshold for wireless relative to microphone input. In real life, evaluation of speech quality, speech intelligibility in quiet and noise, and annoyance by ambient noise, when using landline phone, mobile telephone, and watching TV showed a clear preference (p <1%) for the Ponto Plus system with streamer over the microphone input. Due to the small number of respondents with landline phone (N = 7) the result for noise annoyance was only significant at the 5% level. Conclusion: Equal input levels for acoustic and wireless inputs results in equal speech scores, showing a (near) equivalence for acoustic and wireless sound transmission with Ponto Pro and Ponto Plus. The default 9-dB difference between microphone and wireless input when using the telephone results in a substantial

  13. Anchor reinforcements

    Energy Technology Data Exchange (ETDEWEB)

    Levkovich, P.Ye.; Sal' nikov, V.K.; Savich, N.S.

    1980-11-30

    An anchor reinforcement includes an anchor shaft, an elastic jig with a separator wall having compartments placed parallely along it and filled with reinforcement material and a device for destroying the jig wall separator. To quickly put the anchor in place and increase the reliability of the reinforcement by mixing the reinforcement material components better, the device for destroying the jig separator wall was made in the shape of a shovel, fastened to the anchor shaft and the separator wall has a longitudinal hollow for holding the anchor shaft/shovel.

  14. Gastrotomy closure with a new tissue anchoring device: A porcine survival study

    Institute of Scientific and Technical Information of China (English)

    Carlos Guarner-Argente; Henry Córdova; Graciela Martínez-Pallí; Ricard Navarro-Ripoll; Antonio Rodríguez-d'Jesús; Cristina Rodríguez de Miguel; Mireia Beltrán; Gloria Fernández-Esparrach

    2011-01-01

    AIM: To evaluate the feasibility, reproducibility and efficacy of a new tissue anchoring device in a porcine survival model.METHODS: Gastrotomies were performed using a needle-knife and balloon dilator in 10 female Yorkshire pigs weighing 30-35 kg. Gastric closure was attempted usinga new tissue anchoring device. The tightness of the closure was confirmed by means of air insufflation and the ability to maintain gastric distension with stability in peritoneal pressure measured with a Veress needle. All animals were monitored daily for signs of peritonitis and sepsis over 14 d. During necropsy, the peritoneal cavity and the gastric access site were examined.RESULTS: Transgastric access, closure and 14 d survival was achieved in all pigs. The mean closure timewas 18.1 ± 19.2 min and a mean of 2.1 ± 1 devices were used. Supplementary clips were necessary in 2 cases. The closure time was progressively reduced(24.8 ± 13.9 min in the first 5 pigs vs 11.4 ± 5.9 min in the last 5, P = NS). At necropsy, the gastric access site was correctly closed in all cases with all brace-bars present. One device was misplaced in the mesocolon.Minimal adhesions were observed in 3 pigs and signs of mild peritonitis and adhesions in one.CONCLUSIONS: The use of this new tissue anchoring device in porcine stomachs is feasible, reproducible and effective and requires a short learning curve.

  15. Device Design and Test of Fatigue Behaviour of Expansion Anchor Subjected to Tensile Loads

    Directory of Open Access Journals (Sweden)

    Zhang Jinfeng

    2016-01-01

    Full Text Available In order to study on the fatigue behaviour of expansion anchor (M16, grade 8.8 for overhead contact system in electrification railways, a set of safe, practical loading device is designed and a fatigue test campaign was carried out at structural laboratory of China Academy of Building Research on expansion anchor embedded in concrete block. The mobile frame of the loading device was designed well by finite-element simulation. According to some fatigue performance test of expansion anchor with different size and form, the device have been assessed experimentally its dependability. The results were found that no fatigue damage phenomenon occurred in all specimens after 2×106 cycles tensile fatigue test in this specific series. It shows that in the condition of medium level or slightly lower maximum stress limit and nominal stress range, expansion bolt has good fatigue resistance. The biggest relative displacement and the residual relative displacement after test (Δδ = δ2-δ1 was also strongly lower than the symbol of the fatigue test failure index of this specific series (0.5mm in the high cycle fatigue regime. The ultimate tension failures mode after fatigue tests in all tested samples take place in the concrete anchorage zone. The reduction range of the ultimate tensile strength properties of the anchorage system was not obvious, and the concrete was seen to be the weakest link of the system.

  16. Load bearing capacity of bone anchored fiber-reinforced composite device.

    Science.gov (United States)

    Ballo, Ahmed Mansour; Lassila, Lippo V; Vallittu, Pekka K; Närhi, Timo O

    2007-10-01

    The purpose of this study was to evaluate the push-out load-bearing capacity of threaded fiber-reinforced composite (FRC) devices for use as bone-anchored devices. The purpose was also to evaluate the possibility to use bioactive glass (BAG) granules on the experimental FRC devices in terms the mechanical behavior. Three experimental FRC devices (n = 15) were fabricated for the study: (a) threaded device with smooth surface; (b) threaded device with BAG granules (S53P4, Vivoxid Ltd, Turku, Finland) and supplementary retention grooves, and (c) unthreaded device with BAG granules. Threaded titanium devices were used as controls. The FRC devices were prepared from a light-polymerized dimethacrylate resin reinforced with preimpregnated unidirectional and bidirectional E-glass fibers (EverStick, StickTech Ltd, Turku, Finland). Experimental and control devices were embedded into dental plaster to simulate bone before the mechanical push-out test was carried out. ANOVA and Weibull analysis were used for the statistical evaluation. Threaded FRC devices had significantly higher push-out strength than the threaded titanium device (p < .001). The push-out forces exceeding 2,500 N were measured for threaded FRC devices with supplementary grooves and BAG coating. No thread failures were observed in any FRC devices. The unthreaded FRC devices with BAG lost 70% of glass particles during the test, while no BAG particles were lost from threaded FRC devices. It can be concluded that threaded FRC devices can withstand high push-out forces in the dental plaster without a risk of thread failure under physiological load. PMID:17558473

  17. OCGen Module Mooring Project

    Energy Technology Data Exchange (ETDEWEB)

    McEntee, Jarlath [Ocean Renewable Power Company, LLC, Portland, ME (United States)

    2015-02-06

    Ocean Renewable Power Company's OCGen Module Mooring Project provided an extensive research, design, development, testing and data collection effort and analysis conducted with respect to a positively buoyant, submerged MHK device secured to the seabed using a tensioned mooring system. Different analytic tools were evaluated for their utility in the design of submerged systems and their moorings. Deployment and testing of a prototype OCGen® system provided significant data related to mooring line loads and system attitude and station keeping. Mooring line loads were measured in situ and reported against flow speeds. The Project made a significant step in the development of designs, methodologies and practices related to floating and mooring of marine hydrokinetic (MHK) devices. Importantly for Ocean Renewable Power Company, the Project provided a sound basis for advancing a technically and commercially viable OCGen® Power System. The OCGen® Power System is unique in the MHK industry and, in itself, offers distinct advantages of MHK devices that are secured to the seabed using fixed structural frames. Foremost among these advantages are capital and operating cost reductions and increased power extraction by allowing the device to be placed at the most energetic level of the water column.

  18. Anchors and their use in offshore petroleum operations

    Energy Technology Data Exchange (ETDEWEB)

    1984-01-01

    Holding a ship or vessel in a fixed position over specific spots is essential in drilling subsea wells. Conventional anchors and holding systems have thus been transformed into permanent mooring points capable of withstanding enormous stresses. This book specifies the parameters directly governing behavior of these new anchors, studies the mechanisms involved in anchor/seabed interaction and interprets these in the context of soil mechanics, and draws practical conclusions in the form of methods for predicting holding capacity in different types of subsea soils. Contents are: history of anchors; high-capacity anchoring systems; kinetics of anchors; holding power of anchors; anchoring site survey; choice of an anchor; and anchoring tests.

  19. The anchor of the frameless intrauterine device does not migrate over time: an analysis in over 300 women

    Directory of Open Access Journals (Sweden)

    Wildemeersch D

    2014-12-01

    Full Text Available Dirk Wildemeersch,1 Ansgar Pett,2 Sohela Jandi,2 Kilian Nolte,3 Wolfgang Albrecht4 1Gynecological Outpatient Clinic and IUD Training Centre, Ghent, Belgium; 2Gynecological Outpatient Clinic, Berlin, Germany; 3Gynecological Outpatient Clinic, Uetze, Germany; 4Gynecological Outpatient Clinic, Feldkirchen, Austria Objective: To evaluate the correct position of the anchor at insertion and follow-up and assess if migration of the anchor occurs over time. Materials and methods: This was an insertion-related, prospective, postmarketing study in 309 women. Following insertion, women were followed up at 4–6 weeks, 6 months, and yearly thereafter. The position of the visualized anchor in the fundus of the uterus was evaluated using ultrasound by measuring its distance from the serosal surface of the uterus (SA-distance. Results: A total of 309 parous (n=115 and nulliparous (n=194 women were fitted with the frameless GyneFix 200 or the GyneFix 330 intrauterine device for contraception. The mean SA-distance in 306 parous and nulliparous women was 6.0 mm (range 2.0–24.0 mm at insertion in the parous group and 5.4 mm (range 1.3–11.0 mm in the nulliparous group. At the first follow-up in 281 women, the SA-distance was 6.0 mm (range 2.0–12.0 mm in the parous group and 5.5 mm (range 1.1–11.0 mm in the nulliparous group. The SA-distance was not significantly different. One patient had an exceptionally large SA-distance of 24 mm, probably due to insertion in the posterior wall. No follow-up could be done in this patient. In 77 women, the SA-distance was measured up to 42 months. The mean SA-distance at insertion in the parous group was 5.2 mm (range 3.0–8.5 mm and 4.8 mm (range 1.3–7.0 mm in the nulliparous group. At the last follow-up up to 36 months or longer, the SA-distance was 5.1 mm (range 3.0–8.5 mm in the parous group and 4.9 mm (range 1.3–7.0 mm in the nulliparous group. The SA-distance was not significantly different. The visualized

  20. Driveline Infection Risk with Utilization of a Temporary External Anchoring Suture After Implantation of a Left Ventricular Assist Device.

    Science.gov (United States)

    Fudim, Marat; Brown, Christopher L; Davis, Mary E; Djunaidi, Monica; Danter, Matthew R; Harrell, Frank E; Stulak, John M; Haglund, Nicholas A; Maltais, Simon

    2016-01-01

    Driveline infections (DLI) are a cause of morbidity after continuous-flow left ventricular assist device (CF-LVAD) implantation. Because driveline trauma contributes to DLI, we assessed whether intraoperative placement of a temporary external anchoring suture (EAS) influenced DLI rate. We analyzed 161 consecutive patients with CF-LVAD (HMII 82; HW 79) implantation. Two groups were defined: placement of EAS (n = 85) or No EAS (n = 76). For NO EAS patients, the driveline was permanently anchored internally to the rectus fascia. Cox proportional analysis was performed to assess the effect of EAS on time to first confirmed DLI. Baseline characteristics were comparable between groups (all p = 0.3). Mean follow-up time was 0.93 years. A total of 18 (11.1%) patients developed confirmed culture positive DLI, with "first infection" rate of 0.13 events/year. Mean time to confirmed DLI was 0.69 years. Driveline infection was less likely (hazard ratio [HR] = 0.28, 0.95 confidence interval [CI] = 0.06-1.25, p = 0.056) to occur in NO EAS (2/18) then in EAS (16/18). Confirmed DLI was comparable between device types (p = 0.3). Multivariable regression adjusted for age, BMI, blood product use, device type, and diabetes showed equivocal effect of EAS (HR = 0.33, 0.95 CI = 0.07-1.54, p = 0.12). Patients with a temporary EAS may have an increased risk of confirmed DLI after device implantation. PMID:26809083

  1. Stability Testing of a Wide Bone-Anchored Device after Surgery without Skin Thinning

    Directory of Open Access Journals (Sweden)

    Malou Hultcrantz

    2015-01-01

    Full Text Available Objective. To longitudinally follow the osseointegration using Resonance Frequency Analysis (RFA for different lengths of abutment on a new wide bone-anchored implant, introduced with the non-skin thinning surgical technique. Study Design. A single-center, prospective 1 year study following adults with bone-anchored hearing implants. Materials and Methods. Implantation was performed and followed for a minimum of 1 year. All patients were operated on according to the tissue preserving technique. A 4.5 mm wide fixture (Oticon Medical with varying abutments (9 to 12 mm was used and RFA was tested 1 week, 7 weeks, 6 months, and 12 months later. Implant Stability Quotient (ISQ, was measured from 1 to 100. Stability was compared to a group of patients (N=7 implanted with another brand (Cochlear BI400 of 4.5 mm fixtures. Results. All 10 adults concluded the study. None of the participants lost their implant during the test period indicating a good anchoring of abutments to the wide fixture tested. Stability testing was shown to vary depending on abutment length and time after surgery and with higher values for shorter abutments and increasing values over the first period of time. One patient changed the abutment from 12 to 9 mm and another from a 9 to a 12 during the year. No severe skin problems, numbness around the implant, or cosmetic problems arose. Conclusion. After 1 year of follow-up, combination of a wide fixture implant and the non-skin thinning surgical technique indicates a safe procedure with good stability and no abutment losses.

  2. Efficient light-emitting devices based on platinum-complexes-anchored polyhedral oligomeric silsesquioxane materials

    KAUST Repository

    Yang, Xiaohui

    2010-08-24

    The synthesis, photophysical, and electrochemical characterization of macromolecules, consisting of an emissive platinum complex and carbazole moieties covalently attached to a polyhedral oligomeric silsesquioxane (POSS) core, is reported. Organic light-emitting devices based on these POSS materials exhibit a peak external quantum efficiency of ca. 8%, which is significantly higher than that of the analogous devices with a physical blend of the platinum complexes and a polymer matrix, and they represent noticeable improvement in the device efficiency of solution-processable phosphorescent excimer devices. Furthermore, the ratio of monomer and excimer/aggregate electroluminescent emission intensity, as well as the device efficiency, increases as the platinum complex moiety presence on the POSS macromolecules decreases. © 2010 American Chemical Society.

  3. Comparison and Sensitivity Investigations of a CALM and SALM Type Mooring System for Wave Energy Converters

    Directory of Open Access Journals (Sweden)

    Arthur Pecher

    2014-02-01

    Full Text Available A quasi-static analysis and sensitivity investigation of two different mooring configurations—a single anchor leg mooring (SALM and a three-legged catenary anchor leg system (CALM—is presented. The analysis aims to indicate what can be expected in terms of requirements for the mooring system size and stiffness. The two mooring systems were designed for the same reference load case, corresponding to a horizontal design load at the wave energy converter (WEC of 2000 kN and a water depth of 30 m. This reference scenario seems to be representative for large WECs operating in intermediate water depths, such as Weptos, Wave Dragon and many others, including reasonable design safety factors. Around this reference scenario, the main influential parameters were modified in order to investigate their impact on the specifications of the mooring system, e.g. the water depth, the horizontal design load, and a mooring design parameter.

  4. Ode to Moore

    Science.gov (United States)

    Wilbert, Nancy Corrigan

    2011-01-01

    Best known for his monumental abstract sculptures of reclining figures, Henry Moore's forms are generally pierced or have a hollow space within them. Some say that these "organic undulating forms" are reminiscent of the landscape of his home in Yorkshire, England. Moore was a giant in the world of sculpture and his large cast bronzes and marble…

  5. Design of the Wave Dragon Mooring System

    DEFF Research Database (Denmark)

    Parmeggiani, Stefano

    with experimental data, derived from tank tests of the 2nd generation scaled model of the device. In phase 2 further tank testing has been carried out on a novel 3rd generation scaled model to assess the design loads in the mooring system and the extreme response of the device in surge, heave and pitch to extreme....... Alternative mooring configurations have to be assessed in order to identify the most cost-effective, real configurations allowing the desired compliance to the system, as shown by the results of phase 2. The numerical model used is part of the commercial software package SESAM, developed by DNV together...

  6. The detrimental consequences for seagrass of ineffective marine park management related to boat anchoring.

    Science.gov (United States)

    La Manna, G; Donno, Y; Sarà, G; Ceccherelli, G

    2015-01-15

    Posidonia oceanica (L.) Delile meadows are recognized as priority habitat for conservation by the EU Habitats Directive. The La Maddalena Archipelago National Park (Mediterranean Sea) P. oceanica meadow, the dominant coastal habitat of the area, is mostly threatened by boat anchoring. 12 years after the establishment of mooring fields and anchoring restrictions, a study was conducted to measure their effectiveness on the conservation of seagrass and the mitigation of anchoring damage. We found that: (i) the condition of P. oceanica was disturbed, both in the mooring fields and in control locations; (ii) mooring fields and anchoring restrictions did not show to be an efficient system for the protection of seagrass, in fact anchor scars increased after the tourist season; (iii) the mooring systems had an impact on the surrounding area of the meadow, probably due to their misuse. On the basis of these results, management recommendations for marine parks are proposed. PMID:25467874

  7. Fixpoints vs Moore Families

    DEFF Research Database (Denmark)

    Zhang, Fuyuan; Nielson, Flemming; Nielson, Hanne Riis

    2012-01-01

    CTL formula can be described as the least element in a Moore family of acceptable sets of states for the static analysis. Turning the attention to the μ-calculus we are able to generalise this result to the alternation-free fragment whereas even for the fragment of alternation depth 2 we show that the...... fixed point characterisation cannot be recast as a Moore family property....

  8. System for Monitoring, Determining, and Reporting Directional Spectra of Ocean Surface Waves in Near Realtime from a Moored Buoy

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A moored buoy floating at the ocean surface and anchored to the seafloor precisely measures acceleration, pitch, roll, and Earth's magnetic flux field of the buoy...

  9. Mooring-laitteiston vaikutus runkosuunnitteluun

    OpenAIRE

    Vuorio, Teemu

    2014-01-01

    Tämän opinnäytetyön tarkoituksena oli perehtyä mooring-laitteisiin ja niiden vaikutuksiin runkosuunnittelussa sekä tutkia mahdollisuutta kehittää standardoitu rakenne laivan keulan rakenteille ja mooring-laitteiden perustuksille, riippumatta mooring-laitteista. Mooring-laitteiden tehtävä on kiinnittää laiva satamaan tai ankkuroida se merellä. Laivan varustelunumero ja viranomaisten vaatimukset määräävät vaatimukset mooring-laitteille. Mooring-laitteiden vaikutus laivan runkosuunnitteluun o...

  10. Design of automatic thruster assisted mooring systems for ships

    Directory of Open Access Journals (Sweden)

    Jan P. Strand

    1998-04-01

    Full Text Available This paper addresses the mathematical modelling and controller design of an automatic thruster assisted position mooring system. Such control systems are applied to anchored floating production offloading and storage vessels and semi-subs. The controller is designed using model based control with a LQG feedback controller in conjunction with a Kalman filter. The controller design is in addition to the environmental loads accounting for the mooring forces acting on the vessel. This is reflected in the model structure and in the inclusion of new functionality.

  11. 一种锚式表层沉积物采集装置%One Anchor-Device Sampler for the Surface Sediment Collection

    Institute of Scientific and Technical Information of China (English)

    薛彬; 郭远明; 李铁军; 崔雪亮; 张玉荣; 朱剑

    2013-01-01

    One anchor-device sampler for the surface sediment collection was invented since conventional surface sediment sampler was too heavy for cancellation water current,depth,sediment condition and the sampling success rate. The new sampler like boat anchor whose quality was 1/3 of grab sampler′s. What′s more,the new sampler was very easy to operate and its success rate was nearly 100%,so it should be applied and popularized. In the paper,the structure and working process were introduced.%鉴于传统的柱状采泥器、抓斗式采泥器比重较大,受海流、水深、底质情况制约,采样成功率低的问题,借鉴了船锚的工作原理,研制了锚式表层沉积物采集装置。其重量为抓斗式采泥器的1/3,操作简便,成功率近100%,可以推广使用。该文介绍其结构和工作过程。

  12. Analysis and Design of Trial Well Mooring in Deepwater of the South China Sea

    Institute of Scientific and Technical Information of China (English)

    Yongfeng Guo; Shaojun Ji; Changquan Tang; Jiansong Li; Huiquan Zhong; Ong Chin Yam Ian

    2012-01-01

    Mooring systems play an important role for semi-submersible rigs that drill in deepwater.A detailed analysis was carried out on the mooring of a semi-submersible rig that conducted a trial well drilling at a deepwater location in the South China Sea in 2009.The rig was 30 years old and had a shallow platform with a designed maximum operating water depth of 457 m.Following the mooring analysis,a mooring design was given that requires upgrading of the rig's original mooring system.The upgrade included several innovations,such as installing eight larger anchors,i.e.replacing the original anchors and inserting an additional 600 m of steel wires with the existing chains.All this was done to enhance the mooring capability of the rig in order for the rig to be held in position to conduct drilling at a water depth of 476 m.The overall duration of the drilling was 50 days and the upgraded mooring system proved to be efficient in achieving the goal of keeping the rig stationary while it was drilling the trial well in the South China Sea.This successful campaign demonstrates that an older semi-submersible rig can take on drilling in deep water after careful design and proper upgrading and modification to the original mooring system.

  13. PULLOUT CAPACITY OF HORIZONTAL AND INCLINED PLATE ANCHORS IN CLAYEY SOILS

    Directory of Open Access Journals (Sweden)

    BALESHWAR SINGH

    2011-11-01

    Full Text Available Soil anchors are required to withstand uplift or lateral forces acting on the foundations of structures constructed both in land and offshore sites. Plate anchoring system is being increasingly used to moor floating structures for the exploration and development of oil and gas fields. In this study, various experimental,theoretical and numerical approaches for estimation of pullout capacity of horizontal and inclined plate anchors in clayey soils are reviewed. A comparative analysis of the ultimate capacity is then carried out for plate anchors embedded in clayey soils by varying embedment ratio for horizontal anchors and by varying inclination angle for inclined plate anchors.

  14. The ARGOS contribution to the successful dredging of a deep moored current meter

    Science.gov (United States)

    Gonella, J.; Ollivier, B.

    Current meters moored at 1200 m from a seabed 4600 m deep in the Indian Ocean were recovered using the ARGOS system after failure of the explosive anchor-release bolts prevented recovery using acoustic methods. The position of each mooring was known to within 0.25 nautical miles, so the ARGOS system was used to position the recovery ships to within 100 m of the targets.

  15. Instrument access device for use during e.g. aparoscopic choecystectomy procedure, has distal anchoring ring provided to locate within wound interior, and retractor with sleeve extending from ring to retract sides of wound opening

    OpenAIRE

    Bonadio, Frank; Butler, John; Vaugh, Trevor; MacNally, Shane

    2008-01-01

    The device (90) has two instrument seals (71, 72) for effecting a seal around two instruments extended through the device, respectively. The instrument seals are arranged in sealing relationship to a body of a patient. A distal anchoring ring (401) is provided to locate within a wound interior. A retractor with a sleeve (402) extends proximally from the distal ring to retract laterally sides of a wound opening. One instrument seal is spaced apart and is formed separately from another instrume...

  16. Risk assessment on a pipeline passing through a ship mooring area

    Science.gov (United States)

    Yan, Shu-wang; Huo, Zhi-liang; Sun, Li-qiang; Liu, Run

    2014-04-01

    It is very common that a submarine pipeline has to pass through a ship mooring area near a harbor zone in the Bohai Bay, China. The risk assessment of accidental events induced by the potential anchoring ships is carried out, which will lead to external interference with the pipeline. A procedure to calculate the probability for the anchoring activity in the ship mooring area to damage the underlying pipeline is proposed. The adopted methodology is based on the recommendations suggested by the DNV Codes. The same philosophy is also applied to estimate the damage probability that is concerned with sinking ships.

  17. Verification and Validation of Multisegmented Mooring Capabilities in FAST v8: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Andersen, Morten T.; Wendt, Fabian; Robertson, Amy; Jonkman, Jason; Hall, Matthew

    2016-08-01

    The quasi-static and dynamic mooring modules of the open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, have previously been verified and validated, but only for mooring arrangements consisting of single lines connecting each fairlead and anchor. This paper extends the previous verification and validation efforts to focus on the multisegmented mooring capability of the FAST v8 modules: MAP++, MoorDyn, and the OrcaFlex interface. The OC3-Hywind spar buoy system tested by the DeepCwind consortium at the MARIN ocean basin, which includes a multisegmented bridle layout of the mooring system, was used for the verification and validation activities.

  18. A review of synthetic fiber moorings for marine energy applications

    OpenAIRE

    Davies, Peter; Weller, Sam D.; Johanning, Lars; Banfield, Stephen J.

    2014-01-01

    Many marine renewable energy (MRE) conversion systems including wave, floating wind, Ocean Thermal Energy Conversion (OTEC) and some tidal energy devices, are moored in place. The choice of mooring system is critical as it directly affects installation, energy take-off, and long term reliability, and hence has a significant influence on costs. Installation has been estimated to account for 27% of lifetime cost for a tidal turbine [1]. This is an area where the other marine industries, notably...

  19. Simplified Design Procedures for Moorings of Wave-Energy Converters

    DEFF Research Database (Denmark)

    Bergdahl, Lars; Kofoed, Jens Peter

    The goal of the report is that the reader shall be able to self-dependently make a first, preliminary analysis of wave-induced horizontal loads, motions and mooring forces for a moored floating wave energy device. Necessary prerequisites to attain that goal are the understanding of the physical...... phenomena, awareness of simplifying assumptions and some insight into the available mathematical or numerical tools....

  20. Synthetic mooring ropes for marine renewable energy applications

    OpenAIRE

    Weller, Samuel; Johanning, L.; Davies, Peter; Banfield, S. J.

    2015-01-01

    Synthetic mooring ropes have a proven track record of use in harsh operating conditions over the past two decades. As one of the main users of ropes for permanent mooring systems, the oil and gas industry has opted for these components because they possess performance characteristics and economies of scale which are in many respects superior to steel components. Given this accrued experience, it is unsurprising that several marine renewable energy (MRE) device developers have utilised synthet...

  1. Stone anchors from Sindhudurg Fort on the west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Gaur, A.S.

    , of which there are triangular and three grapnet-type, used to construct the jetty along with the locally available sand stone. The two remaining grapnet-type anchors are erected on the jetty for mooring purposes. It is found that none of the anchors were...

  2. Patrick Moore the autobiography

    CERN Document Server

    Moore, Patrick

    2011-01-01

    Throughout his distinguished career, Patrick Moore has, without a doubt, done more to raise the profile of astronomy among the British public than any other figure in the scientific world. As the presenter of The Sky at Night on BBC television for nearly 50 years he was honored with an OBE in 1968 and a CBE in 1988. In 2001 he was knighted 'for services to the popularisation of science and to broadcasting'. The BBC first aired The Sky at Night in April 1957 and it is now in the record books as the world's longest running TV series with the same presenter. He is also the author of over 60

  3. Elomar - a moored platform for wind turbines

    Energy Technology Data Exchange (ETDEWEB)

    Bertacchi, P. (AIOM (Associazione Ingegneria Offshore e Marina), Milan (Italy)); Di Monaco, A.; Gerioni, M. de; Ferranti, G. (Ente Nazionale per l' Energia Elettrica, Milan (Italy). Centro di Ricerca Idraulica e Strutturale)

    1994-01-01

    Offshore installations of wind turbines are promising for higher wind energy availability, and for less severe environmental and social constraints, than on the mainland. In this paper a semi-submersible moored structure for supporting wind turbines in depths ranging from 30 to 100 m is presented and discussed. The proposed structure consists of a toroidal body connected, by means of three columns, with a platform located above the maximum wave crest, where the supporting tower of a standard wind turbine is placed. The toroidal body is held in submersion at a depth of about 10 m by mooring cables anchored to the sea bottom; this reduces the wave action on the structure and achieves suitable stability and stiffness of the whole system. With reference to a given site, with known wind and wave climate, and to a medium size wind turbine, some alternatives for the supporting structure are developed. The movements of the structures and the cable forces have been evaluated by means of model tests carried out in a laboratory wave flume. (author)

  4. The MAVID heart holder: a demonstration device to anchor cadaver hearts for surgical simulation and practical education.

    Science.gov (United States)

    Mavroudis, Constantine; Idriss, Rachid; Klaus, Kristen E

    2015-12-01

    Performing open heart surgery involves learning challenging techniques and a need for realistic training models to achieve and maintain a high level of surgical skills. The MAVID heart holder is an organ holder primarily designed to hold the heart in its anatomic position for the purpose of surgical simulation and education, thereby closing the gap between surgical performance in the laboratory and in the operating room. The device is simple to use, can be adjusted to organ size, and has the necessary instrumentation to be used with any solid organ. The MAVID heart holder also provides a platform for presentation and assists in advancing the research sphere. The advantage over other existing models is that the MAVID heart holder uses real tissue and does not distort the organ at the attachment sites. Further, it offers superior stability as well as the ability to manipulate the organ during presentation and dissection. Training with the MAVID heart holder has the potential to shorten training time to acquire surgical skills and proficiency before performing these techniques in the operating room and in so doing enhance patient safety. PMID:26675615

  5. Cabled-observatory Regional Circulation Moorings on the Endeavour segment of the Juan de Fuca Ridge

    Science.gov (United States)

    Mihaly, S. F.

    2011-12-01

    In September of 2010, one of four moorings was deployed on the Endeavour node of the NEPTUNE Canada cabled-observatory network. The installation included the laying of a 7km cable from the node to the mooring site in the axial valley about 3km north of the Main Endeavour Vent Field over extraordinary bathymetry. This September, three more cables and secondary junction boxes will be deployed to support the three additional moorings that complete the regional circulation array. The cable-laying is facilitated by the Canadian Scientific Submersible Facility's ROV ROPOS and a remotely operated cable-laying system, whereas the actual deployment of the moorings is a two ship operation. The CCGS John P. Tully lowers the mooring anchor first, while the RV Thomas G. Thompson supports the ROV operations which navigate the mooring to underwater mateable cable end. Precise navigation is needed because there are few areas suitable for placement of the junction boxes. Scientifically, the moorings are designed and located to best constrain the hydrothermally driven circulation within the rift valley, the regional circulation can then be used as a proxy measurement for hydrothermal fluxes. Each mooring carries a current meter/ ctd pair at 4, 50, 125, and 200m, with an upward looking ADCP at 250m. The northern moorings are located between the Hi-Rise and Salty Dawg fields about 700m apart in the ~1km wide rift valley and the southern moorings are located south of the Mothra vent field. Here we present initial results from the four mooring array.

  6. Moore, Francis (1657-c. 1715)

    Science.gov (United States)

    Murdin, P.

    2000-11-01

    Astrologer, born in Bridgnorth, Shropshire. In 1700 he began to publish Vox Stellarum (Voice of the Stars), which under the name Old Moore's Almanac still attempts to predict annually the events of the following year....

  7. Novel moored tidal stream generating equipment

    International Nuclear Information System (INIS)

    This development programme, which will run from April 2005 to February 2008, aims to further develop and test TidEl, a novel moored tidal stream generating device developed by SMD Hydrovision (SMDH) . TidEl consists of a pair of turbine/generators fixed together by a cross beam and secured to the sea bed using a novel mooring system. The practical and economic viability of TidEl as a deep water tidal energy-gathering device has already been demonstrated by SMDH using a 1/10th scale model. The project's objectives are to: conduct an environmental impact assessment of TidEl; design, assemble and install a full-scale 1 MW plant; operate the equipment for up to 12 months (including a winter period); develop and evaluate installation, maintenance and decommissioning techniques; and prove the economic viability of TidEl. The 1 MW TidEl device will be installed off Eday in the Orkney Isles during 2006 for intensive testing

  8. Nonlinear Dynamic Analysis of Multi-component Mooring Lines Incorporating Line-seabed Interaction

    Directory of Open Access Journals (Sweden)

    V.J. Kurian

    2013-07-01

    Full Text Available In this study, a deterministic approach for the dynamic analysis of a multi-component mooring line was formulated. The floater motion responses were considered as the mooring line upper boundary conditions while the anchored point was considered as pinned. Lumped parameter approach was adopted for the mooring line modelling. The forces considered were the submerged weights of mooring/attachment, physical/added inertia, line tension, fluid/line relative drag forces and line/seabed reactive forces. The latter interactions were modelled assuming that the mooring line rested on an elastic dissipative foundation. An iterative procedure for the dynamic analysis was developed and results for various mooring lines partially lying on different soils were obtained and validated by conducting a comparative study against published results. Good agreement between numerical and published experimental results was achieved. The contribution of the soil characteristics of the seabed to the dynamic behaviour of mooring line was investigated for different types of soil and reported.

  9. Dynamics of Large-Truncated Mooring Systems Coupled with A Catenary Moored Semi-Submersible

    Institute of Scientific and Technical Information of China (English)

    徐胜; 嵇春艳

    2014-01-01

    With the floating structures pushing their activities to the ultra-deep water, model tests have presented a challenge due to the limitation of the existing wave basins. Therefore, the concept of truncated mooring system is implemented to replace the full depth mooring system in the model tests, which aims to have the same dynamic responses as the full depth system. The truncated mooring system plays such a significant role that extra attention should be paid to the mooring systems with large truncation factor. Three different types of large truncation factor mooring system are being employed in the simulations, including the homogenously truncated mooring system, non-homogenously truncated mooring system and simplified truncated mooring system. A catenary moored semi-submersible operating at 1000 m water depth is presented. In addition, truncated mooring systems are proposed at the truncated water depth of 200 m. In order to explore the applicability of these truncated mooring systems, numerical simulations of the platform’s surge free decay interacting with three different styles of truncated mooring systems are studied in calm water. Furthermore, the mooring-induced damping of the truncated mooring systems is simulated in the regular wave. Finally, the platform motion responses and mooring line dynamics are simulated in irregular wave. All these simulations are implemented by employing full time domain coupled dynamic analysis, and the results are compared with those of the full depth simulations in the same cases. The results show that the mooring-induced damping plays a significant role in platform motion responses, and all truncated mooring systems are suitable for model tests with appropriate truncated mooring line diameters. However, a large diameter is needed for simplified truncated mooring lines. The suggestions are given to the selection of truncated mooring system for different situations as well as to the truncated mooring design criteria.

  10. The pre- stress concrete structure, Found to-be More Effective Then THE Reinforced concrete structure & System developed for mechanism OF, Anchoring devices in pre and post Tensioned concrete structural elements

    Directory of Open Access Journals (Sweden)

    Pradeep Nath Mathur

    2015-04-01

    Full Text Available The pre-stressing concrete Used for casting of section is quite different from reinforced cements concrete (RCC. in concrete Technology. The pre- stressing system used is of two kind, pre- tensioning & posttensioning methods. The prestressing by pre &post tensioning device mechanism, developed for Anchoring system in concrete structural element is adopted for structures. In modern type of Pre stressing electricity with Low voltage and high current is used in anchoring for a concrete member & sulpher Coating as applied on steel bars working, as duct material before the casting of concrete member. While supplying electricity in the structure sulpher get melted up because heat generated in the steel structure & allow them for pre stressing. No provision of any duct is required .The High strength steel alloy structure could be anchored by tightening nuts at both the ends. The Pre-stressing in concrete structure is found more effective then RCC technology. To-day prestressing is preferred for large structures like bridges etc. ,it is required to adopted for all small concrete structure sections also. It is to-days demand to replace RCC completely by Pre-stress concrete, because of RCC have large section with less strength as compare to pre-stress concrete. In RCC System it is rein-forced first and then loaded after casting, when ever in the Pre stressing system, where reinforcement which may called ‘tendons’ are as one kind used for stressing in the concrete itself . They are stressed first then casted & force is applied. It is required that, effective & less cost (Economic anchoring devices must be available for the prestressing techniques; It is because of its initial investment is high and less pre-stress work is restricted also, must be possible to make adoption easily. It is found possible to make concrete having light weight & high strength in all structures. High strength alloy steel & Rich strength concrete may be used along with large

  11. Hypersensitivity to Suture Anchors

    Directory of Open Access Journals (Sweden)

    Masafumi Goto

    2013-01-01

    Full Text Available Hypersensitivity to suture anchor is extremely rare. Herein, we present a case in which hypersensitivity to suture anchor was strongly suspected. The right rotator cuff of a 50-year-old woman was repaired with a metal suture anchor. Three weeks after the surgery, she developed erythema around her face, trunk, and hands, accompanied by itching. Infection was unlikely because no abnormalities were detected by blood testing or by medical examination. Suspicious of a metallic allergy, a dermatologist performed a patch testing 6 months after the first surgery. The patient had negative reactions to tests for titanium, aluminum, and vanadium, which were the principal components of the suture anchor. The anchor was removed 7 months after the first surgery, and the erythema disappeared immediately. When allergic symptoms occur and persist after the use of a metal anchor, removal should be considered as a treatment option even if the patch test result is negative.

  12. Moore et l’utilitarisme

    Directory of Open Access Journals (Sweden)

    Jean-Pierre Cléro

    2009-07-01

    Full Text Available The analytical requirements of Moore in ethical questions are so high that we labour under the impression that all morals and ethics before (and even after he wrote the Principia, fall into the delusion he calls "naturalistic". It may be granted that to do one’s duty, to realize one’s person, to follow a particular intuition etc.. is to do good ; but why would the good consist in doing one’s duty, realizing one’s person and conforming to a particular affect ? It is difficult to see how Utilitarianism would allow to resolve the "inverse problem" ; yet Moore claims himself to be a Utilitarian and inscribes his purpose in the wake of Bentham’s, Stuart Mill’s and Sidgwick’s. How is it possible? Of course, there are many sorts of Utilitarianism. What did Moore want? Did he want, at the beginning of the twentieth century, to add another sort of utilitarianism to a long list of ramifications and branching? What meaning should we give his ideal utilitarianism, as he called and promoted it in Principia Ethica?

  13. Susceptibility to anchoring effects

    Directory of Open Access Journals (Sweden)

    Todd McElroy

    2007-02-01

    Full Text Available Previous research on anchoring has shown this heuristic to be a very robust psychological phenomenon ubiquitous across many domains of human judgment and decision-making. Despite the prevalence of anchoring effects, researchers have only recently begun to investigate the underlying factors responsible for how and in what ways a person is susceptible to them. This paper examines how one such factor, the Big-Five personality trait of openness-to-experience, influences the effect of previously presented anchors on participants' judgments. Our findings indicate that participants high in openness-to-experience were significantly more influenced by anchoring cues relative to participants low in this trait. These findings were consistent across two different types of anchoring tasks providing convergent evidence for our hypothesis.

  14. A Nanotechnology Enhancement to Moore's Law

    Directory of Open Access Journals (Sweden)

    Jerry Wu

    2013-01-01

    Full Text Available Intel Moore observed an exponential doubling in the number of transistors in every 18 months through the size reduction of transistor components since 1965. In viewing of mobile computing with insatiate appetite, we explored the necessary enhancement by an increasingly maturing nanotechnology and facing the inevitable quantum-mechanical atomic and nuclei limits. Since we cannot break down the atomic size barrier, the fact implies a fundamental size limit at the atomic/nucleus scale. This means, no more simple 18-month doubling, but other forms of transistor doubling may happen at a different slope. We are particularly interested in the nano enhancement area. (i 3 Dimensions: If the progress in shrinking the in-plane dimensions is to slow down, vertical integration can help increasing the areal device transistor density. As the devices continue to shrink into the 20 to 30 nm range, the consideration of thermal properties and transport in such devices becomes increasingly important. (ii Quantum computing: The other types of transistor material are rapidly developed in laboratories worldwide, for example, Spintronics, Nanostorage, HP display Nanotechnology, which are modifying this Law. We shall consider the limitation of phonon engineering fundamental information unit “Qubyte” in quantum computing, Nano/Micro Electrical Mechanical System (NEMS, Carbon Nanotubes, single-layer Graphenes, single-strip Nano-Ribbons, and so forth.

  15. Measuring Turbulence from Moored Acoustic Doppler Velocimeters. A Manual to Quantifying Inflow at Tidal Energy Sites

    Energy Technology Data Exchange (ETDEWEB)

    Kilcher, Levi [National Renewable Energy Lab. (NREL), Golden, CO (United States); Thomson, Jim [Univ. of Washington, Seattle, WA (United States); Talbert, Joe [Univ. of Washington, Seattle, WA (United States); DeKlerk, Alex [Univ. of Washington, Seattle, WA (United States)

    2016-03-01

    This work details a methodology for measuring hub height inflow turbulence using moored acoustic Doppler velocimiters (ADVs). This approach is motivated by the shortcomings of alternatives. For example, remote velocity measurements (i.e., from acoustic Doppler profilers) lack sufficient precision for device simulation, and rigid tower-mounted measurements are very expensive and technically challenging in the tidal environment. Moorings offer a low-cost, site-adaptable and robust deployment platform, and ADVs provide the necessary precision to accurately quantify turbulence.

  16. The dynamic analysis of offshore mooring terminals

    OpenAIRE

    Langley, R.S.

    1983-01-01

    This Thesis investigates the methods which are currently avail- able for the dynamic analysis of Offshore Mooring Terminals, particular regard being paid to Single Point Mooring (SPM) Terminals. Various aspects of the problem are considered in turn, these being the random vibration of non-linear systems, the analysis of catenary mooring lines, buoy dynamics, ship motions, second order (or slow drift) forces and motions, and low frequency motions caused by instabilities. T...

  17. 33 CFR 62.35 - Mooring buoys.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Mooring buoys. 62.35 Section 62.35 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION UNITED STATES AIDS TO NAVIGATION SYSTEM The U.S. Aids to Navigation System § 62.35 Mooring buoys. Mooring Buoys are white with a blue horizontal...

  18. Anchoring visions in organizations

    DEFF Research Database (Denmark)

    Simonsen, Jesper

    1999-01-01

    This paper introduces the term 'anchoring' within systems development: Visions, developed through early systems design within an organization, need to be deeply rooted in the organization. A vision's rationale needs to be understood by those who decide if the vision should be implemented as well as...... anchoring is considered to be a main activity, is outlined. The task of anchoring visions is described, and techniques and activities are suggested with respect to those actors that have to act on the visions and the recommendations from a design proposal. The paper concludes that obtaining appropriate...

  19. Moore et l’utilitarisme

    OpenAIRE

    Jean-Pierre Cléro

    2009-01-01

    The analytical requirements of Moore in ethical questions are so high that we labour under the impression that all morals and ethics before (and even after) he wrote the Principia, fall into the delusion he calls "naturalistic". It may be granted that to do one’s duty, to realize one’s person, to follow a particular intuition etc.. is to do good ; but why would the good consist in doing one’s duty, realizing one’s person and conforming to a particular affect ? It is difficult to see h...

  20. Susceptibility to anchoring effects

    OpenAIRE

    Todd McElroy; Keith Dowd

    2007-01-01

    Previous research on anchoring has shown this heuristic to be a very robust psychological phenomenon ubiquitous across many domains of human judgment and decision-making. Despite the prevalence of anchoring effects, researchers have only recently begun to investigate the underlying factors responsible for how and in what ways a person is susceptible to them. This paper examines how one such factor, the Big-Five personality trait of openness-to-experience, influences the effect of previously p...

  1. Results of Austin Moore replacement.

    Directory of Open Access Journals (Sweden)

    Jadhav A

    1996-04-01

    Full Text Available Forty cases of Austin Moore Replacement done for transcervical fractures of the femur in patients were reviewed after a period of 12 to 48 months postoperatively (mean 26 mth. 30 cases (75% had mild to severe pain of non-infective origin, starting as early as 6 months postoperatively. This was irrespective of the make, size or position (varus/valgus of the prosthesis. Though the Aufranc and Sweet clinical scoring was satisfactory in 65% cases, radiological evidence of complications like sinking, protrusion, etc. were seen in majority of the cases. Calcar resorption was seen in 34 cases (85% as early as 4 months postoperatively. Results of THR and bipolar replacement done for transcervical fractures in recent literature show 85% pain-free cases at 5 years. We feel that Austin Moore Replacement should be reserved for patients more than 65 years of age and those who are less active or debilitated because of other factors, because of increased acetabular wear with time in the younger individual. This is corroborated by unsatisfactory results in patients less than 65 years of age (p < 0.05.

  2. Adsorption phenomena and anchoring energy in nematic liquid crystals

    CERN Document Server

    Barbero, Giovanni

    2005-01-01

    Despite the large quantity of phenomenological information concerning the bulk properties of nematic phase liquid crystals, little is understood about the origin of the surface energy, particularly the surface, interfacial, and anchoring properties of liquid crystals that affect the performance of liquid crystal devices. Self-contained and unique, Adsorption Phenomena and Anchoring Energy in Nematic Liquid Crystals provides an account of new and established results spanning three decades of research into the problems of anchoring energy and adsorption phenomena in liquid crystals.The book contains a detailed discussion of the origin and possible sources of anchoring energy in nematic liquid crystals, emphasizing the dielectric contribution to the anchoring energy in particular. Beginning with fundamental surface and anchoring properties of liquid crystals and the definition of the nematic phase, the authors explain how selective ion adsorption, dielectric energy density, thickness dependence, and bias voltage...

  3. More than Moore technologies for next generation computer design

    CERN Document Server

    2015-01-01

    This book provides a comprehensive overview of key technologies being used to address challenges raised by continued device scaling and the extending gap between memory and central processing unit performance.  Authors discuss in detail what are known commonly as “More than Moore” (MtM), technologies, which add value to devices by incorporating functionalities that do not necessarily scale according to “Moore's Law”.  Coverage focuses on three key technologies needed for efficient power management and cost per performance: novel memories, 3D integration and photonic on-chip interconnect.

  4. Experimental assessment of the mooring influence on the power output of floating Wave Activated Body WECs

    DEFF Research Database (Denmark)

    Angelelli, Elisa; Zanuttigh, Barbara; Ferri, Francesco;

    2013-01-01

    The paper presents the preliminary results of new physical tests carried out in the directional wave basin of Aalborg University (DK). The devices under exams are two floating 7 Degrees of Freedom Wave Activated Bodies moored with a spread system composed by 4 steel chains. The devices were subject...

  5. Mooring system design for floating wind turbines

    OpenAIRE

    Laks, Annika

    2014-01-01

    Recently, there has been a lot of research on floating wind turbines. These structures have to be moored for a station keeping, which is relatively straightforward for deep waters. In transitional water depths (35-70 m) however, it is not obvious how to find a good, cost-efficient mooring system.In this thesis a catenary mooring system for a typical floating wind turbine is designed with different options for the cables: chains, metal and synthetic rope, mixed type and clump weights. The anal...

  6. Anchoring the Deficit of the Anchor Deficit: Dyslexia or Attention?

    Science.gov (United States)

    Willburger, Edith; Landerl, Karin

    2010-01-01

    In the anchoring deficit hypothesis of dyslexia ("Trends Cogn. Sci.", 2007; 11: 458-465), it is proposed that perceptual problems arise from the lack of forming a perceptual anchor for repeatedly presented stimuli. A study designed to explicitly test the specificity of the anchoring deficit for dyslexia is presented. Four groups, representing all…

  7. Are open-fit hearing aids a possible alternative to bone-anchored hearing devices in patients with mild to severe hearing loss? A preliminary trial

    Directory of Open Access Journals (Sweden)

    Amberley V. Ostevik

    2013-08-01

    Full Text Available Open-fit hearing aids (OFHAs may be of benefit for some individuals with chronic outer and middle ear conditions for which boneanchored hearing devices (BAHDs are normally recommended. The purpose of this study was to compare performance between OFHAs and BAHDs. A Starkey Destiny 800 OFHA was fit on eight adult BAHD users and speech perception measures in quiet and in background noise were compared under two different test conditions: i BAHD only and ii OFHA only. Equivalent outcome measure performance between these two conditions suggests that the OFHA was able to provide sufficient amplification for mild to moderate degrees of hearing loss (pure-tone averages (PTAs less than 47 dB HL. The improved speech perception performances and increased loudness ratings observed for several of the participants with moderately-severe to severe degrees of hearing loss (PTAs of 47 dB HL or greater in the BAHD only condition suggest that the OFHA did not provide sufficient amplification for these individuals. Therefore, OFHAs may be a successful alternative to the BAHD for individuals with no more than a moderate conductive hearing loss who are unable or unwilling to undergo implant surgery or unable to wear conventional hearing aids due to allergies, irritation, or chronic infection associated with the ear being blocked with a shell or earmold.

  8. Beyond moore computing research challenge workshop report.

    Energy Technology Data Exchange (ETDEWEB)

    Huey, Mark C. [Perspectives, Inc., Albuquerque, NM; Aidun, John Bahram

    2013-10-01

    We summarize the presentations and break out session discussions from the in-house workshop that was held on 11 July 2013 to acquaint a wider group of Sandians with the Beyond Moore Computing research challenge.

  9. Methods in mooring deep sea sediment traps

    Digital Repository Service at National Institute of Oceanography (India)

    Venkatesan, R.; Fernando, V.; Rajaraman, V.S.; Janakiraman, G.

    The experience gained during the process of deployment and retrieval of nearly 39 sets of deep sea sediment trap moorings on various ships like FS Sonne, ORV Sagarkanya and DSV Nand Rachit are outlined. The various problems encountered...

  10. Mooring Line for an Oceanographic Buoy System

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A mooring line for an oceanographic buoy system includes four sections. The first section is a protected cable that is connectable to the buoy. The second section...

  11. The Scope of Moore's Ethical Intuitionism

    OpenAIRE

    Ali Akbar Abdolabadi

    2009-01-01

    One of the most fundamental questions about G. E. Moore's ethical intuitionism relates to its scope. Does Moore's ethical intuitionism only relate to the value - ethical terms and the ethical judgments or propositions containing them, or beside those terms and judgments or propositions, it relate to the obligatory ethical terms and the ethical judgments or propositions containing them? In this paper, we will try to show, by an analytic - critical method, that contrary to som...

  12. Improvement of Mooring Configurations in Geraldton Harbour

    OpenAIRE

    Wim van der Molen; Doug Scott; David Taylor; Trevor Elliott

    2015-01-01

    Ports exposed to high energy long wave conditions can experience significantly reduced berth operability. Geraldton is perhaps one of the best known examples. Recent studies to mitigate the problems have concentrated on the reduction of the long waves by extending the breakwater. However, this is quite costly. Various countermeasures related to the mooring configuration are defined and analysed in this paper. The analysed alternatives are use of shore-based mooring lines, installation of soft...

  13. Basin Testing of Wave Energy Converters in Trondheim: Investigation of Mooring Loads and Implications for Wider Research

    Directory of Open Access Journals (Sweden)

    Vladimir Krivtsov

    2014-04-01

    Full Text Available This paper describes the physical model testing of an array of wave energy devices undertaken in the NTNU (Norwegian University of Science and Technology Trondheim basin between 8 and 20 October 2008 funded under the EU Hydralabs III initiative, and provides an analysis of the extreme mooring loads. Tests were completed at 1/20 scale on a single oscillating water column device and on close-packed arrays of three and five devices following calibration of instrumentation and the wave and current test environment. One wave energy converter (WEC was fully instrumented with mooring line load cells, optical motion tracker and accelerometers and tested in regular waves, short- and long-crested irregular waves and current. The wave and current test regimes were measured by six wave probes and a current meter. Arrays of three and five similar WECs, with identical mooring systems, were tested under similar environmental loading with partial monitoring of mooring forces and motions. The majority of loads on the mooring lines appeared to be broadly consistent with both logistic and normal distribution; whilst the right tail appeared to conform to the extreme value distribution. Comparison of the loads at different configurations of WEC arrays suggests that the results are broadly consistent with the hypothesis that the mooring loads should differ. In particular; the results from the tests in short crested seas conditions give an indication that peak loads in a multi WEC array may be considerably higher than in 1-WEC configuration. The test campaign has contributed essential data to the development of Simulink™ and Orcaflex™ models of devices, which include mooring system interactions, and data have also been obtained for inter-tank comparisons, studies of scale effects and validation of mooring system numerical models. It is hoped that this paper will help to draw the attention of a wider scientific community to the dataset freely available from the

  14. Sampling efficiency of the Moore egg collector

    Science.gov (United States)

    Worthington, Thomas A.; Brewer, Shannon K.; Grabowski, Timothy B.; Mueller, Julia

    2013-01-01

    Quantitative studies focusing on the collection of semibuoyant fish eggs, which are associated with a pelagic broadcast-spawning reproductive strategy, are often conducted to evaluate reproductive success. Many of the fishes in this reproductive guild have suffered significant reductions in range and abundance. However, the efficiency of the sampling gear used to evaluate reproduction is often unknown and renders interpretation of the data from these studies difficult. Our objective was to assess the efficiency of a modified Moore egg collector (MEC) using field and laboratory trials. Gear efficiency was assessed by releasing a known quantity of gellan beads with a specific gravity similar to that of eggs from representatives of this reproductive guild (e.g., the Arkansas River Shiner Notropis girardi) into an outdoor flume and recording recaptures. We also used field trials to determine how discharge and release location influenced gear efficiency given current methodological approaches. The flume trials indicated that gear efficiency ranged between 0.0% and 9.5% (n = 57) in a simple 1.83-m-wide channel and was positively related to discharge. Efficiency in the field trials was lower, ranging between 0.0% and 3.6%, and was negatively related to bead release distance from the MEC and discharge. The flume trials indicated that the gellan beads were not distributed uniformly across the channel, although aggregation was reduced at higher discharges. This clustering of passively drifting particles should be considered when selecting placement sites for an MEC; further, the use of multiple devices may be warranted in channels with multiple areas of concentrated flow.

  15. Optimal Set-point Chasing of Position Moored Vessel

    DEFF Research Database (Denmark)

    Fang, Shaoji; Blanke, Mogens; Bernt, Leira

    2010-01-01

    Dynamic positioning of surface vessels moored to the seabed via a spread mooring system are referred to as position mooring (PM), the main objective of which is to keep the vessel within a small radius from a given position while preventing mooring line breakage. When environmental loads become...... high, position mooring systems apply thruster forces to protect mooring lines and position accuracy may need be relaxed. This paper suggests an new position chasing algorithm that works entirely online, is optimal according to a criterion and can protect any number of mooring lines simultaneously....... Tensions of all mooring lines are included in a cost function where the criticality for each mooring line determine individual weights. With this strategy, external environment effects are included directly by without needing predefined tabular settings of environmental loads as in earlier approaches...

  16. The Anchoring Concept

    DEFF Research Database (Denmark)

    Simonsen, Jesper

    1998-01-01

    This paper introduces the term 'anchoring' within systems development: Visions, developed through early systems design within an organization, need to be deeply rooted in the organization. A vision's rationale needs to be understood by those who decide if the vision should be implemented as well as...... by those involved in the actual implementation. A model depicting a recent trend within systems development is presented: Organizations rely on purchasing generic software products and/or software development outsourced to external contractors. A contemporary method for participatory design, where...

  17. Moor House Pictures 1961-1964

    OpenAIRE

    D. T. Crisp

    2007-01-01

    During the period 1961 to 1964 the writer was employed by the Nature Conservancy at the Merlewood Research Station to act as deputy to Michael Rawes (who was then the Officer-in-Charge at Moor House), to spend approximately half his time at Moor House and to do research there. The photographs in this book were taken during this period and originated as 35 mm colour transparencies. Many of them were very dark and some digital improvement has been possible. Some are of rather poor quality...

  18. Response of surface buoy moorings in steady and wave flows

    Digital Repository Service at National Institute of Oceanography (India)

    Anand, N.M.; Nayak, B.U; SanilKumar, V.

    A numerical model has been developed to evaluate the dynamics of surface buoy mooring systems under wave and current loading. System tension response and variation of tension in the mooring line at various depths have been evaluated for deep water...

  19. Mooring Line Damping Estimation for a Floating Wind Turbine

    OpenAIRE

    Dongsheng Qiao; Jinping Ou

    2014-01-01

    The dynamic responses of mooring line serve important functions in the station keeping of a floating wind turbine (FWT). Mooring line damping significantly influences the global motions of a FWT. This study investigates the estimation of mooring line damping on the basis of the National Renewable Energy Laboratory 5 MW offshore wind turbine model that is mounted on the ITI Energy barge. A numerical estimation method is derived from the energy absorption of a mooring line resulting from FWT mo...

  20. Improvement of Mooring Configurations in Geraldton Harbour

    Directory of Open Access Journals (Sweden)

    Wim van der Molen

    2015-12-01

    Full Text Available Ports exposed to high energy long wave conditions can experience significantly reduced berth operability. Geraldton is perhaps one of the best known examples. Recent studies to mitigate the problems have concentrated on the reduction of the long waves by extending the breakwater. However, this is quite costly. Various countermeasures related to the mooring configuration are defined and analysed in this paper. The analysed alternatives are use of shore-based mooring lines, installation of softer fenders, a combination of these two, and deployment of Cavotec MoorMaster™ units. These alternatives were compared with the existing mooring configuration and with the option to extend the breakwater. The best improvement (50% increase of threshold long wave height inside the harbour is reached by installing a combination of pneumatic fenders and constant tension winches set to 30 t, or nylon breast lines on a brake winch with a pretension of 25 t. In this way, the vessel is pulled into the fenders and fender friction prevents excessive surging of the ship along the berth.

  1. Final Technical Report Advanced Anchoring Technology DOE Award Number DE-EE0003632 Project Period 09/10 - 09/12

    Energy Technology Data Exchange (ETDEWEB)

    Meggitt, Dallas J

    2012-11-09

    It is generally conceded that the costs associated with current practices for the mooring, anchoring, or foundation systems of Marine HydroKinetic (MHK) and Deepwater Floating Wind systems are a disproportionate portion of the total cost of an installed system. Reducing the cost of the mooring and anchoring components for MHK systems can contribute substantially to reducing the levelized cost of electricity (LCOE). Micropile anchors can reduce the LCOE both directly, because the anchors, associated mooring hardware and installation costs are less than conventional anchor and mooring systems, but also because micropile anchors require less extensive geotechnical surveys for confident design and proper implementation of an anchor or foundation system. This report presents the results of the development of critical elements of grouted marine micropile anchor (MMA) technology for application to MHK energy conversion systems and other ocean engineering applications that require fixing equipment to the seafloor. Specifically, this project identified grout formulations and developed designs for grout dispensing systems suitable for use in a seawater environment as a critical development need for successful implementation of practical MMA systems. The project conducted a thorough review of available information on the use of cement-based grouts in seawater. Based on this review and data available from commercial sources, the project selected a range of grout formulations for testing as part of a micropile system. The project also reviewed instrumentation for measuring grout density, pressure and flow rate, and integrated an instrumentation system suitable for use with micropile installation. The grout formulations and instrumentation system were tested successfully and demonstrated the suitability of MMA technology for implementation into anchor systems for MHK and other marine renewable energy systems. In addition, this project developed conceptual designs for micropile

  2. Fault Monitoring and Fault Recovery Control for Position Moored Tanker

    DEFF Research Database (Denmark)

    Fang, Shaoji; Blanke, Mogens

    2011-01-01

    addition to dedicated diagnosis, an optimal position algorithm is proposed to accommodate buoyancy element failure and keep the mooring system in a safe state. Furthermore, even in the case of line breakage, this optimal position strategy could be utilised to avoid breakage of a second mooring line......This paper addresses fault tolerant control for position mooring of a shuttle tanker operating in the North Sea. A complete framework for fault diagnosis is presented but the loss of a sub-sea mooring line buoyancy element is given particular attention, since this fault could lead to mooring line...

  3. Monitoring of a single point moored ship

    OpenAIRE

    Facchini, Luca; Rizzo, Michele; Spadaccini, Ostilio; Vignoli, Andrea

    2013-01-01

    The offshore platform VEGA is operating since 1988 in Sicily channel with a Single Point Moored tanker ship,. This work shows the overall features of the system and the collection and analysis of the data concerning the structural response of column-yoke-vessel FSO recorded since 2009. The structural monitoring is performed through a series of 37 optical strain gauges installed on the ship and on the yoke, and two biaxial inclinometers installed on SPM. Therefore the following items are moni...

  4. Coupled Mooring Systems for Floating Wind Farms

    OpenAIRE

    Goldschmidt, Marek

    2014-01-01

    In this work the feasibility of an integrated catenary loose mooring system for offshore floating wind turbines is investigated. The dynamic behavior of different wind farm layouts is analyzed employing the equation of motion. It will be especially sought after potential resonance problems. The equation is solved in frequency domain, using a linearized stiffness matrix, as well as in time domain. Time-domain simulation is done by using a quasi-static model, where the catenary equa...

  5. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... skin to allow removal of some of the soft tissue where the screwlike fixture will be anchored. The ... screen, acting as a hinge. Beneath that the soft tissue consisting of fat and some muscle is removed. ...

  6. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... to allow removal of some of the soft tissue where the screwlike fixture will be anchored. The ... series of slides demonstrates the removal of the tissue beneath the skin flap. You can see in ...

  7. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... The Baha system consists of a bone-anchored titanium fixture that is implanted in the mastoid bone, ... the -- great. I'm going to grab the titanium implant. And what I want you to notice ...

  8. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... of the bone oscillator is superficial on the skin, the transference of that energy is less efficient, ... slides, is to mark the location in the skin where the screwlike fixture will be anchored. Subsequent ...

  9. Basin Testing of Wave Energy Converters in Trondheim: Investigation of Mooring Loads and Implications for Wider Research

    OpenAIRE

    Vladimir Krivtsov; Brian Linfoot

    2014-01-01

    This paper describes the physical model testing of an array of wave energy devices undertaken in the NTNU (Norwegian University of Science and Technology) Trondheim basin between 8 and 20 October 2008 funded under the EU Hydralabs III initiative, and provides an analysis of the extreme mooring loads. Tests were completed at 1/20 scale on a single oscillating water column device and on close-packed arrays of three and five devices following calibration of instrumentation and the wave and curre...

  10. Mooring System Diagnosis and Structural Reliability Control for Position Moored Vessels

    DEFF Research Database (Denmark)

    Fang, Shaoji; Blanke, Mogens; Leira, Bernt J.

    2015-01-01

    Early diagnosis and fault-tolerant control are essential for safe operation of oating platforms where mooring systems maintain vessel position and must withstand environmental loads. This paper considers two critical faults, line breakage and loss of a buoyancy element and employs vector statisti......Early diagnosis and fault-tolerant control are essential for safe operation of oating platforms where mooring systems maintain vessel position and must withstand environmental loads. This paper considers two critical faults, line breakage and loss of a buoyancy element and employs vector...... monitoring the safety level of each mooring line and, a set-point chasing algorithm accommodates the eects of line failure, as an integral part of the reliability- based set-point chasing control algorithm. The feasibility of the diagnosis and of the fault-tolerant control strategy is veried in model basin...

  11. Mechanical Design of a Trawl-Resistant Self-Mooring Autonomous Underwater Vehicle

    OpenAIRE

    Wilson, Taylor Boyde

    2016-01-01

    The Virginia Tech Trawl-Resistant Self-Mooring Autonomous Underwater Vehicle (TRSMAUV) is designed to reside on the seafloor for extended periods of time. The TRSMAUV shape allows for deployment in areas where trawl fisheries are conducted. TRSMAUV is a two stage vehicle. The ingress vehicle is the delivery device, and it is constructed from two symmetric halves. The top half contains the ingress vehicle propulsion system and control surfaces. The bottom half is the trawl-resistant moori...

  12. Robotic Ankle for Omnidirectional Rock Anchors

    Science.gov (United States)

    Parness, Aaron; Frost, Matthew; Thatte, Nitish

    2013-01-01

    Future robotic exploration of near-Earth asteroids and the vertical and inverted rock walls of lava caves and cliff faces on Mars and other planetary bodies would require a method of gripping their rocky surfaces to allow mobility without gravitational assistance. In order to successfully navigate this terrain and drill for samples, the grippers must be able to produce anchoring forces in excess of 100 N. Additionally, the grippers must be able to support the inertial forces of a moving robot, as well gravitational forces for demonstrations on Earth. One possible solution would be to use microspine arrays to anchor to rock surfaces and provide the necessary load-bearing abilities for robotic exploration of asteroids. Microspine arrays comprise dozens of small steel hooks supported on individual suspensions. When these arrays are dragged along a rock surface, the steel hooks engage with asperities and holes on the surface. The suspensions allow for individual hooks to engage with asperities while the remaining hooks continue to drag along the surface. This ensures that the maximum possible number of hooks engage with the surface, thereby increasing the load-bearing abilities of the gripper. Using the microspine array grippers described above as the end-effectors of a robot would allow it to traverse terrain previously unreachable by traditional wheeled robots. Furthermore, microspine-gripping robots that can perch on cliffs or rocky walls could enable a new class of persistent surveillance devices for military applications. In order to interface these microspine grippers with a legged robot, an ankle is needed that can robotically actuate the gripper, as well as allow it to conform to the large-scale irregularities in the rock. The anchor serves three main purposes: deploy and release the anchor, conform to roughness or misalignment with the surface, and cancel out any moments about the anchor that could cause unintentional detachment. The ankle design contains a

  13. Mooring Line Damping Estimation for a Floating Wind Turbine

    Science.gov (United States)

    Qiao, Dongsheng; Ou, Jinping

    2014-01-01

    The dynamic responses of mooring line serve important functions in the station keeping of a floating wind turbine (FWT). Mooring line damping significantly influences the global motions of a FWT. This study investigates the estimation of mooring line damping on the basis of the National Renewable Energy Laboratory 5 MW offshore wind turbine model that is mounted on the ITI Energy barge. A numerical estimation method is derived from the energy absorption of a mooring line resulting from FWT motion. The method is validated by performing a 1/80 scale model test. Different parameter changes are analyzed for mooring line damping induced by horizontal and vertical motions. These parameters include excitation amplitude, excitation period, and drag coefficient. Results suggest that mooring line damping must be carefully considered in the FWT design. PMID:25243231

  14. Mooring Line Damping Estimation for a Floating Wind Turbine

    Directory of Open Access Journals (Sweden)

    Dongsheng Qiao

    2014-01-01

    Full Text Available The dynamic responses of mooring line serve important functions in the station keeping of a floating wind turbine (FWT. Mooring line damping significantly influences the global motions of a FWT. This study investigates the estimation of mooring line damping on the basis of the National Renewable Energy Laboratory 5 MW offshore wind turbine model that is mounted on the ITI Energy barge. A numerical estimation method is derived from the energy absorption of a mooring line resulting from FWT motion. The method is validated by performing a 1/80 scale model test. Different parameter changes are analyzed for mooring line damping induced by horizontal and vertical motions. These parameters include excitation amplitude, excitation period, and drag coefficient. Results suggest that mooring line damping must be carefully considered in the FWT design.

  15. Fault tolerant position mooring control based on structural reliability

    OpenAIRE

    Fang, Shaoji

    2012-01-01

    Safety of position mooring system is a prime concern in the marine industry and regulations are in force to prevent faults in equipment from causing failure of the whole system. There are many reasons for failures in elements of a mooring system, e.g. material damage, overload, fatigue, brittle fracture, corrosion, abrasion, extreme environment. For mooring cables, one of the typical reasons for failure is overload due to frequent replacement and inspections. Although a design based on knowle...

  16. PREFACE: E-MRS 2012 Spring Meeting, Symposium M: More than Moore: Novel materials approaches for functionalized Silicon based Microelectronics

    Science.gov (United States)

    Wenger, Christian; Fompeyrine, Jean; Vallée, Christophe; Locquet, Jean-Pierre

    2012-12-01

    More than Moore explores a new area of Silicon based microelectronics, which reaches beyond the boundaries of conventional semiconductor applications. Creating new functionality to semiconductor circuits, More than Moore focuses on motivating new technological possibilities. In the past decades, the main stream of microelectronics progresses was mainly powered by Moore's law, with two focused development arenas, namely, IC miniaturization down to nano scale, and SoC based system integration. While the microelectronics community continues to invent new solutions around the world to keep Moore's law alive, there is increasing momentum for the development of 'More than Moore' technologies which are based on silicon technologies but do not simply scale with Moore's law. Typical examples are RF, Power/HV, Passives, Sensor/Actuator/MEMS or Bio-chips. The More than Moore strategy is driven by the increasing social needs for high level heterogeneous system integration including non-digital functions, the necessity to speed up innovative product creation and to broaden the product portfolio of wafer fabs, and the limiting cost and time factors of advanced SoC development. It is believed that More than Moore will add value to society on top of and beyond advanced CMOS with fast increasing marketing potentials. Important key challenges for the realization of the 'More than Moore' strategy are: perspective materials for future THz devices materials systems for embedded sensors and actuators perspective materials for epitaxial approaches material systems for embedded innovative memory technologies development of new materials with customized characteristics The Hot topics covered by the symposium M (More than Moore: Novel materials approaches for functionalized Silicon based Microelectronics) at E-MRS 2012 Spring Meeting, 14-18 May 2012 have been: development of functional ceramics thin films New dielectric materials for advanced microelectronics bio- and CMOS compatible

  17. Current status of frameless anchored IUD for immediate intracesarean insertion.

    Science.gov (United States)

    Wildemeersch, Dirk; Goldstuck, Norman D; Hasskamp, Thomas

    2016-01-01

    Immediate postpartum intrauterine device (IUD) insertion deserves great attention as it can provide immediate, timely and convenient contraception plus the added benefit of preventing repeat unintended pregnancies. Although women post vaginal delivery can benefit from immediate post-placenta contraception, women undergoing Cesarean section clearly need contraception, as an inter-delivery interval shorter than 18 months places them at a high risk for uterine rupture. The main drawback of currently available framed IUD devices for immediate postpartum insertion of an IUD is their high expulsion and displacement rates when inserted immediately postpartum after both vaginal and Cesarean delivery. Current research suggests that a brief window of opportunity exists of 10 minutes for insertion of conventional IUDs after which time expulsion rates both immediately and over time are greatly enhanced. This paper summarizes the current research conducted to overcome the expulsion problems associated with conventional T-shaped devices as well as through the use of an anchored frameless device. In the 1970s and 1980s, attempts were made to solve the expulsion problem by modifying existing devices, such as adding absorbable sutures (Delta-T) or additional appendages. These attempts proved to be clinically unsuccessful as the catgut suture added to the transverse arms did not provide sufficient resistance to prevent downward displacement and expulsion. An anchoring technique to suspend a copper IUD to the fundus of the uterus was developed in Belgium in the 1980s and has been the subject of extensive ongoing clinical research since 1985. Recently the frameless copper releasing anchor IUD, GyneFix, has been tested for postplacental insertion. Initially, the anchor was modified by the inclusion of a biodegradable cone which was added below the anchoring knot. Clinical studies confirmed the adequacy of this approach suggesting that it was technically possible to anchor an IUD

  18. Permanent ground anchors: Nicholson design criteria

    Science.gov (United States)

    Nicholson, P. J.; Uranowski, D. D.; Wycliffe-Jones, P. T.

    1982-09-01

    The methods used by Nicholson Construction Company in the design of permanent ground anchors specifically as related to retaining walls are discussed. Basic soil parameters, design concepts, drilling and grouting methods for ground anchors are discussed. Particular emphasis is placed on anchors founded in soil rather than rock formations. Also, soil properties necessary for the proper design of anchored retaining walls are detailed. The second chapter of the report is devoted to a general discussion of retaining wall and anchor design. In addition, a design example of an anchored retaining wall is presented in a step by step manner.

  19. Report of the ITTC Specialist Committee on Deep Water Mooring

    DEFF Research Database (Denmark)

    Aage, Christian; Bernitsas, M.M.; Choi, H.S.;

    1999-01-01

    The Committee tasks were to evaluate techniques and recommend procedures for the experimental and numerical simulations of moored vessels in wind, waves and currents.......The Committee tasks were to evaluate techniques and recommend procedures for the experimental and numerical simulations of moored vessels in wind, waves and currents....

  20. Henry (Hank) J. Moore (1928-1998)

    Science.gov (United States)

    Thompson, Thomas W.

    Henry (Hank) J. Moore, a member of the AGU Planetary Sciences section, died of a heart attack on September 21, 1998. He was in Utah while on a family trip to visit his daughter. His 70th birthday occurred just 3 weeks before his death. Henry, who was born in Albuquerque, New Mexico, took great pride in having found and visited the small town of Albuquerque in the Extremadura region of Spain, noting the geologic similarities between that part of Spain and his birthplace in America.Henry, known for his contributions to the Apollo,Viking, Magellan, and Mars Pathfinder missions, attributed his career to a chance encounter with Gene Shoemaker in 1960. Henry was completing his Ph.D. work in geology at Stanford University and Gene obviously had spotted Henry's keen analytical mind. I suspect this pivotal meeting was far from a chance encounter.

  1. Extending the Capabilities of the Mooring Analysis Program: A Survey of Dynamic Mooring Line Theories for Integration into FAST: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Masciola, M.; Jonkman, J.; Robertson, A.

    2014-03-01

    Techniques to model dynamic mooring lines come in various forms. The most widely used models include either a heuristic representation of the physics (such as a Lumped-Mass, LM, system), a Finite-Element Analysis (FEA) discretization of the lines (discretized in space), or a Finite-Difference (FD) model (which is discretized in both space and time). In this paper, we explore the features of the various models, weigh the advantages of each, and propose a plan for implementing one dynamic mooring line model into the open-source Mooring Analysis Program (MAP). MAP is currently used as a module for the FAST offshore wind turbine computer-aided engineering (CAE) tool to model mooring systems quasi-statically, although dynamic mooring capabilities are desired. Based on the exploration in this manuscript, the lumped-mass representation is selected for implementation in MAP based on its simplicity, computational cost, and ability to provide similar physics captured by higher-order models.

  2. A Moored Underwater Energy Conservation System for Profiling Measurement

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    There is a need to obtain the hydrologic data including ocean current, wave, temperature and so on in the South China Sea. A new profiling instrument which does not suffer from the damage due to nature forces or incidents caused by passing ships, is under development to acquire data from this area. This device is based on a taut single point mid-water mooring system. It incorporates a small, instrumented vertically profiling float attached via an electromechanical cable to a winch integral with the main subsurface flotation. On a pre-set schedule, the instrument float with sensors is winched up to the surface if there is no ship passing by, which is defined by an on-board miniature sonar. And it can be immediately winched down to a certain depth if the sonar sensor finds something is coming. Since, because of logistics, the area can only be visited once for a long time and a minimum of 10 times per day profiles are desired, energy demands are severe. To respond to these concerns, the system has been designed to conserve a substantial portion of the potential energy lost during the ascent phase of each profile and subsequently use this energy to pull the instrument down. Compared with the previous single-point layered measuring mode,it is advanced and economica1. At last the paper introduces the test in the South China Sea.

  3. Anchoring in numeric judgments of visual stimuli

    Directory of Open Access Journals (Sweden)

    Linda eLangeborg

    2016-02-01

    Full Text Available This article investigates effects of anchoring in age estimation and estimation of quantities, two tasks which to different extents are based on visual stimuli. The results are compared to anchoring in answers to classic general knowledge questions that rely on semantic knowledge. Cognitive load was manipulated to explore possible differences between domains. Effects of source credibility, manipulated by differing instructions regarding the selection of anchor values (no information regarding anchor selection, information that the anchors are randomly generated or information that the anchors are answers from an expert on anchoring were also investigated. Effects of anchoring were large for all types of judgments but were not affected by cognitive load or by source credibility in either one of the researched domains. A main effect of cognitive load on quantity estimations and main effects of source credibility in the two visually based domains indicate that the manipulations were efficient. Implications for theoretical explanations of anchoring are discussed. In particular, because anchoring did not interact with source credibility or cognitive load, the results imply that the process behind anchoring in visual tasks is predominantly automatic and unconscious.

  4. Inconspicuous anchoring effects generated by false information

    Institute of Scientific and Technical Information of China (English)

    Chen Qu; Jun Wang; Yuejia Luo

    2008-01-01

    The impact of false information on numerical judgments was examined on young normal subjects by an event-related potential (ERP) experiment. To imitate the judgments in real world, we ensured the subjects acknowledged of the target task. The behavioral results found that both uncertain information and false information assimilated the final estimates: higher after higher anchors and lower after lower anchors; and false information caused a weaker anchoring bias than uncertain information. ERP results provided further electrophysiological evidence for the mechanism of anchoring. In the early phrase, it was an accessibility-dominated process in which two kinds of anchors elicited an N300 component related to the accessibility of anchors propositions. The knowledge relevant to targets joined the process in the late phrase, which caused a larger amplitude of late positive component (LPC) for implausible lower anchors than that for plausible higher anchors. Source analysis showed that medial frontal gyrus, whose activity was suggested to signal the need of adjustment, was more reliable to explain the LPC elicited by implausible lower anchors. Therefore, we suggest that accessibility is facilitated when the external anchor is consistent with the world knowledge, and adjustment is initiated when the external anchor is inconsistent.

  5. Anchoring in Numeric Judgments of Visual Stimuli.

    Science.gov (United States)

    Langeborg, Linda; Eriksson, Mårten

    2016-01-01

    This article investigates effects of anchoring in age estimation and estimation of quantities, two tasks which to different extents are based on visual stimuli. The results are compared to anchoring in answers to classic general knowledge questions that rely on semantic knowledge. Cognitive load was manipulated to explore possible differences between domains. Effects of source credibility, manipulated by differing instructions regarding the selection of anchor values (no information regarding anchor selection, information that the anchors are randomly generated or information that the anchors are answers from an expert) on anchoring were also investigated. Effects of anchoring were large for all types of judgments but were not affected by cognitive load or by source credibility in either one of the researched domains. A main effect of cognitive load on quantity estimations and main effects of source credibility in the two visually based domains indicate that the manipulations were efficient. Implications for theoretical explanations of anchoring are discussed. In particular, because anchoring did not interact with cognitive load, the results imply that the process behind anchoring in visual tasks is predominantly automatic and unconscious. PMID:26941684

  6. A Load Cell for the Measurement of Slack Mooring Forces

    Science.gov (United States)

    Balaji, R.; Sannasiraj, S. A.; Sundar, V.

    2014-07-01

    A load cell for the measurement of mooring forces is designed using the load-strain principles and the same is verified for its efficiency by structural modeling. A model load cell is fabricated and calibrated through laboratory experiments using three axes loading as well as mooring chain catenary principles. Experiments are also conducted in the physical wave tank to measure the mooring forces exerted on a disc shaped data buoy by using the designed load cell. The details of the design concepts, structural modeling, instrumentation, calibration, wave tank experiments and the results are discussed in this paper.

  7. DEX-1 and DYF-7 establish sensory dendrite length by anchoring dendritic tips during cell migration

    OpenAIRE

    Heiman, Maxwell G.; Shaham, Shai

    2009-01-01

    Cells are devices whose structures delimit function. For example, in the nervous system, neuronal and glial shapes dictate paths of information flow. To understand how cells acquire their shapes, we examined the formation of a sense organ in C. elegans. Using time-lapse imaging, we found that sensory dendrites form by stationary anchoring of dendritic tips during cell-body migration. A genetic screen identified DEX-1 and DYF-7, extracellular proteins required for dendritic tip anchoring, whic...

  8. Time-Domain Analysis for 3-D Moored Systems

    Institute of Scientific and Technical Information of China (English)

    肖越; 王言英

    2004-01-01

    In the paper, a comprehensive numerical study on the moored system is performed in time domain. The moored system, which is composed of the floating body sub-system and the mooring line sub-system, is calculated as a whole system by coupling. A time-domain method is applied to the analysis of the mooring line sub-system, and at the same time, an indirect time-domain method translated from frequency-domain to time-domain is developed to calculate the floating body sub-system. In the end, an FPSO vessel is calculated as a numerical example by the present method. A comparison of the result of the model test and that of the numerical method indicates that the present method is exact and effective.

  9. Position Mooring Control Based on a Structural Reliability Criterion

    DEFF Research Database (Denmark)

    Fang, Shaoji; Leira, Bernt J.; Blanke, Mogens

    2013-01-01

    mooring lines simultaneously from exceeding a stress threshold, this paper suggests a new algorithm to determine the reference position and an associated control system. The safety of each line is assessed through a structural reliability index. A reference position where all mooring lines are safe is...... achieved using structural reliability indices in a cost function, where both the mean mooring-line tension and dynamic effects are considered. An optimal set-point is automatically produced without need for manual interaction. The parameters of the extreme value distribution are calculated on-line thereby...... adapting the set-point calculations to the prevailing environment. In contrast to earlier approaches, several mooring line are simultaneously accounted for by the algorithm, not only the most critical one. Detailed simulations illustrate the features of the new method and it is shown that the structural...

  10. The Effects of Moore's Law and Slacking on Large Computations

    CERN Document Server

    Gottbrath, C; Meakin, C; Thompson, T; Charfman, J J

    1999-01-01

    We show that, in the context of Moore's Law, overall productivity can be increased for large enough computations by `slacking' or waiting for some period of time before purchasing a computer and beginning the calculation.

  11. AWI Moored ULS Data, Weddell Sea (1990-1998)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set consists of moored Upward Looking Sonar (ULS) data from 14 stations in the Weddell Sea. Parameters in the processed data files are water pressure,...

  12. The RECENT code with the Reich-Moore parametrization

    International Nuclear Information System (INIS)

    The program RECENT, which reconstructs neutron cross sections from resonance parameters given in the ENDF/B format, was modified in order to include in its structure the Reich-Moore parametrization. (Author)

  13. Moored current observations in the Mozambique Channel

    Science.gov (United States)

    Ridderinkhof, H.; de Ruijter, W. P. M.

    2003-07-01

    Observations from an array of current meter moorings across the narrowest section of the Mozambique Channel are used to study the general characteristics of the current field and to estimate the volume transport through the channel. The observations cover a period of about 19 months in 2000 and 2001. Due to problems in data return, the mean transport time series is constructed using several assumptions. The resulting mean volume transport through the channel is estimated to be 14 Sv southward. The time variability of the volume transport is large and oscillates remarkably regular with minimum and maximum values varying roughly between 20 Sv northwards and 60 Sv southwards. No seasonal variability has been found. The spatial and temporal variability of the currents can be characterised by two different regimes: one with strong currents across the entire section, the other one with weak currents. The former lasts much longer than the latter. During the strong-current regime, an anti-cyclonic eddy is formed, which subsequently migrates southward. The formation of these eddies occurs regularly and is related to the strength of the volume transport through the channel. At intermediate and deep levels against the African continental slope (1500 and 2500 m), a relatively strong and northward flowing Mozambique Undercurrent is observed. The mean northward speed is 4.6 cm s -1 (1500 m) and 4.5 cm s -1 (2500 m).

  14. Charles Bachman Moore (1920-2010)

    Science.gov (United States)

    Winn, William; Krehbiel, Paul

    2011-02-01

    Charles B. Moore passed away 2 March 2010 at the age of 89, following a long and varied scientific career in meteorology and the atmospheric sciences. He will be remembered best for his substantial contributions in the field of atmospheric electricity and for the students and faculty he guided as chairman of Langmuir Laboratory for Atmospheric Research and professor of physics at the New Mexico Institute of Mining and Technology. He possessed a unique sense of humor and an excellent memory that served as a reservoir of scientific and historical knowledge. Like many of his generation, Charlie's career was profoundly influenced by the Second World War. Following Pearl Harbor, he interrupted his undergraduate studies in chemical engineering at Georgia Institute of Technology to enlist in the Army Air Corps, where he became the chief weather equipment officer in the 10th Weather Squadron, setting up and operating remote meteorological stations behind enemy lines in the China-Burma-India theater. He served with distinction alongside Athelstan Spilhaus Sr., who had been one of Charlie's instructors in the Army meteorology program.

  15. Experimental and Numerical Studies of Moored Ships in Level Ice

    OpenAIRE

    Aksnes, Vegard Øgård

    2011-01-01

    Moored ships are believed to be feasible for marine operations in ice-covered waters. A variety of ice features, such as broken ice, level ice, ridged ice and icebergs, will pose potential challenges with respect to design and operations. This thesis presents studies on the actions of level ice on moored ships and the resulting vessel response. Focus was put on both analysing physical measurements and deriving suitable numerical models. The thesis is thus articulated around three parts:analys...

  16. Indian Moorings: Deep-sea current meter moorings in the Eastern Equatorial Indian Ocean

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, V.S.N.; Sarma, M.S.S.; Suryanarayana, A.; Sengupta, D.; Unnikrishnan, A.S.; Fernando, V.; Almeida, A.; Khalap, S.; Sardar, A.; Somasundar, K.; Ravichandran, M.

    , for assistance with logistic support; NOAA’s Office of Climate Observation for financial support; and JAMSTEC for its support of the TRITON mooring program. References Duval, J.P. and J. vialard, 2006: The VASCO-CIRENE experiment. Proc 27th AMS Conference...) and meridional (v) current data using a 49 hour moving average. The residual time series data were used for spectral analysis (Murty et al., 2002; Emery and Thomson, 1997). The upward-looking ADCP (300 kHz, RD Instruments Make, USA) provided data of zonal (u...

  17. The Study of Collective Actions in a University Anchored Community Wireless Network

    Science.gov (United States)

    Kuchibhotla, Hari N.

    2012-01-01

    The emergence of wireless devices and the ease in setting up wireless devices has created opportunities for various entities, and in particular to universities, by partnering with their local communities in the form of a university anchored community wireless network. This provides opportunities for students to be part of the community-based…

  18. Shifting Nominal Anchors: The Experience of Mexico

    OpenAIRE

    Leonardo Leiderman; Nissan Liviatan; Alfredo Thorne

    1995-01-01

    In the mid-1980’s Mexico successfully brought down its high rate of inflation by using the exchange rate as nominal anchor in combination with strict fiscal discipline, tight monetary policy, and incomes policy. This paper discusses the role of exchange rate policy as nominal anchor in Mexico and develops the inflation target as the monetary framework for anchoring prices. It also describes how Mexico is applying this frame work while shifting to a more flexible exchange regime and discusses ...

  19. Capital Asset Pricing Model Adjusted for Anchoring

    OpenAIRE

    Hammad, Siddiqi

    2015-01-01

    I show that adjusting CAPM for anchoring provides a unified explanation for the size, value, and momentum effects. Anchoring adjusted CAPM (ACAPM) predicts that stock splits are associated with positive abnormal returns and an increase in return volatility, whereas the reverse stock-splits are associated with negative abnormal returns and a fall in return volatility. Existing empirical evidence strongly supports these predictions. Anchoring has the effect of pushing up the equity premium, a ...

  20. Obituary: Ben Hawkins Moore, 1921-2003

    Science.gov (United States)

    Moore, James F.

    2004-12-01

    Ben H. Moore, emeritus professor of physics, astronomy and earth sciences at St. Cloud State University, Minnesota, died 7 November 2003, in South Padre Island, Texas. Ben was born 18 March 1921, in Kansas City, Missouri, to Fraser D. and Cora R. (Hawkins) Moore. Though his parents provided a strong guiding influence on Ben's development, Ben's career was impacted most clearly by his work as a student and research assistant for Allen Basset (Ben's father-in-law) at Park College. This relationship turned Ben's early interest in chemistry and biology toward a focus on physics. Ben received his undergraduate degree from Park College where he graduated Phi Delta Kappa. He received a MS in physics from Kansas State University. He also did post-masters work at the University of Kansas, the University of Colorado, the University of Washington and Temple University. In addition to his work as a research assistant, Ben taught at Park College as well as Washington Kansas High School, Wyandotte High School, and Kansas City Kansas Junior College before moving to St. Cloud State University in 1960. He retired from this teaching position in May 1982 but remained involved in activities of his department, including some teaching, through most of his years in retirement. Ben's accomplishments were mainly centered on his teaching. His development of courses and his rapport with students consistently brought praise from both his colleagues and his students. Above all, his work involved innovative development of the curriculum in the sciences at St. Cloud State. Soon after his arrival at the university, Ben took over the fledgling field geology course and continued to shape this offering into a program in earth sciences. The popularity of his classes, which attracted both general students and a growing number of majors, finally enabled the university to establish an earth sciences department in the late 1960's and Ben was the first chair of that department. In the mid-1960's Ben took

  1. Design, Fabrication and Testing of Mooring Masts for Remotely Controlled Indoor and Outdoor Airships

    Science.gov (United States)

    Khaleelullah, Syed; Bhardwaj, Utsav; Pant, Rajkumar Sureshchandra

    2016-04-01

    This paper presents the design and structural details of two mooring masts, one for remotely controlled outdoor airships and another one for remotely controlled indoor airships. In a previous study, a mast for outdoor remotely controlled airship was designed to meet several user-specified operating requirements, and a simplified version of the same was fabricated. A spring loaded device was incorporated that sounds an alarm when the wind-loads exceed a threshold value, so that the airship can be taken indoors. The present study started with a critical analysis of that mast, and a new mast was designed and fabricated to remove several of its shortcomings. This mast consists of power screw operated telescopic module made of aluminium, mounted on a five legged base with castor wheels, for ease in mobility. Components of the existing mast were used to the possible extent, and the design was simplified to meet the assembly and transportation requirements. The spring mechanism used in alarming device was also modified to ensure higher sensitivity in the range of maximum expected wind-loads acting on the airship. A lightweight mooring mast for indoor remotely controlled airships was also designed and fabricated, which can accommodate non-rigid indoor airships of length up to 5 m. The mast consists of an elevating bolt operated telescopic module mounted on a tripod adapter base, with lockable castor wheels, and has a specially designed mooring-clamp at the top. The various modules and components of the mast were designed to enable quick assembly and transportation.

  2. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... appropriately. The way the device works is it uses the fact that sound is transmitted very efficiently ... the head using bone conduction. The Baha device uses sound vibrations, and those vibrations then are passed ...

  3. Underwater application of quantitative PCR on an ocean mooring.

    Directory of Open Access Journals (Sweden)

    Christina M Preston

    Full Text Available The Environmental Sample Processor (ESP is a device that allows for the underwater, autonomous application of DNA and protein probe array technologies as a means to remotely identify and quantify, in situ, marine microorganisms and substances they produce. Here, we added functionality to the ESP through the development and incorporation of a module capable of solid-phase nucleic acid extraction and quantitative PCR (qPCR. Samples collected by the instrument were homogenized in a chaotropic buffer compatible with direct detection of ribosomal RNA (rRNA and nucleic acid purification. From a single sample, both an rRNA community profile and select gene abundances were ascertained. To illustrate this functionality, we focused on bacterioplankton commonly found along the central coast of California and that are known to vary in accordance with different oceanic conditions. DNA probe arrays targeting rRNA revealed the presence of 16S rRNA indicative of marine crenarchaea, SAR11 and marine cyanobacteria; in parallel, qPCR was used to detect 16S rRNA genes from the former two groups and the large subunit RuBisCo gene (rbcL from Synecchococcus. The PCR-enabled ESP was deployed on a coastal mooring in Monterey Bay for 28 days during the spring-summer upwelling season. The distributions of the targeted bacterioplankon groups were as expected, with the exception of an increase in abundance of marine crenarchaea in anomalous nitrate-rich, low-salinity waters. The unexpected co-occurrence demonstrated the utility of the ESP in detecting novel events relative to previously described distributions of particular bacterioplankton groups. The ESP can easily be configured to detect and enumerate genes and gene products from a wide range of organisms. This study demonstrated for the first time that gene abundances could be assessed autonomously, underwater in near real-time and referenced against prevailing chemical, physical and bulk biological conditions.

  4. Underwater application of quantitative PCR on an ocean mooring.

    Science.gov (United States)

    Preston, Christina M; Harris, Adeline; Ryan, John P; Roman, Brent; Marin, Roman; Jensen, Scott; Everlove, Cheri; Birch, James; Dzenitis, John M; Pargett, Douglas; Adachi, Masao; Turk, Kendra; Zehr, Jonathon P; Scholin, Christopher A

    2011-01-01

    The Environmental Sample Processor (ESP) is a device that allows for the underwater, autonomous application of DNA and protein probe array technologies as a means to remotely identify and quantify, in situ, marine microorganisms and substances they produce. Here, we added functionality to the ESP through the development and incorporation of a module capable of solid-phase nucleic acid extraction and quantitative PCR (qPCR). Samples collected by the instrument were homogenized in a chaotropic buffer compatible with direct detection of ribosomal RNA (rRNA) and nucleic acid purification. From a single sample, both an rRNA community profile and select gene abundances were ascertained. To illustrate this functionality, we focused on bacterioplankton commonly found along the central coast of California and that are known to vary in accordance with different oceanic conditions. DNA probe arrays targeting rRNA revealed the presence of 16S rRNA indicative of marine crenarchaea, SAR11 and marine cyanobacteria; in parallel, qPCR was used to detect 16S rRNA genes from the former two groups and the large subunit RuBisCo gene (rbcL) from Synecchococcus. The PCR-enabled ESP was deployed on a coastal mooring in Monterey Bay for 28 days during the spring-summer upwelling season. The distributions of the targeted bacterioplankon groups were as expected, with the exception of an increase in abundance of marine crenarchaea in anomalous nitrate-rich, low-salinity waters. The unexpected co-occurrence demonstrated the utility of the ESP in detecting novel events relative to previously described distributions of particular bacterioplankton groups. The ESP can easily be configured to detect and enumerate genes and gene products from a wide range of organisms. This study demonstrated for the first time that gene abundances could be assessed autonomously, underwater in near real-time and referenced against prevailing chemical, physical and bulk biological conditions. PMID:21829630

  5. Feasibility study of a semi floating spar buoy wind turbine anchored with a spherical joint to the sea floor

    DEFF Research Database (Denmark)

    Sanz Martinez, Maria; Natarajan, Anand; Henriksen, Lars Christian

    2013-01-01

    The feasibility of a semi floating platform offshore wind turbine system is investigated at 120m water depth. The semi floating system consists of a 5MW wind turbine on a floater with mooring lines similar to a spar buoy and strongly anchored with a spherical joint to the sea soil. The stability of...... loads are obtained and compared with the corresponding loads from the same wind turbine mounted on a spar buoy and as a land based wind turbine. The results show a reduction in the ultimate and equivalent fatigue loads for the new system....

  6. Anchors from Goa waters, central west coast of India: Remains of Goa's overseas trade contacts with Arabian countries and Portugal

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Gaur, A.S.; Sundaresh

    of horses at Goa. During the Portuguese period, Old Goa became the commercial city. The hinterland region of Goa was connected by the land and riverine routes from the various port sites. Merchants from Arabia, Mozambique, Java, Sri..., paving and moorings (Sila Tripati, et al. , 1998). Similarly, a broken stone anchor has also been used as an architectural feature in the city of Qalhat and is datable to the 10th?16th century AD . In the beginning of the 18th century, Europeans...

  7. Systematic analysis on mooring systems of floating structures; Futai keiryuho ni kansuru keitoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, K.; Suzuki, H.; Ide, T. [The University of Tokyo, Tokyo (Japan)

    1996-12-31

    Discussed herein are mooring performance requirements of the new types of marine structures now proposed, and characteristic ranges and future expansion potential of the existing mooring systems. The mooring systems studied for floating structures are catenary, single point (multi-leg and single-leg types), fixed structure with fender and tension leg mooring systems. The studied items include extraction of the elements that constitute rigidity of the spring for horizontal mooring, survey on and data collection for each element, determination of element ranges, programs for mooring analysis, assessment of mooring characteristic ranges, and potential development of the characteristic ranges. It is concluded that the existing systems with their current characteristic ranges and future possibility are insufficient for the future marine structures. It is therefore necessary to develop new mooring concepts, instead of expanding the current concepts, in order to meet the mooring performance requirements for the new marine structures. 14 refs., 9 figs., 11 tabs.

  8. Verification and Validation of the New Dynamic Mooring Modules Available in FAST v8: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Wendt, Fabian; Robertson, Amy; Jonkman, Jason; Andersen, Morten T.

    2016-08-01

    The open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, was recently coupled to two newly developed mooring dynamics modules: MoorDyn and FEAMooring. MoorDyn is a lumped-mass-based mooring dynamics module developed by the University of Maine, and FEAMooring is a finite-element-based mooring dynamics module developed by Texas A&M University. This paper summarizes the work performed to verify and validate these modules against other mooring models and measured test data to assess their reliability and accuracy. The quality of the fairlead load predictions by the open-source mooring modules MoorDyn and FEAMooring appear to be largely equivalent to what is predicted by the commercial tool OrcaFlex. Both mooring dynamic model predictions agree well with the experimental data, considering the given limitations in the accuracy of the platform hydrodynamic load calculation and the quality of the measurement data.

  9. Impact of mooring activities on carbon stocks in seagrass meadows

    KAUST Repository

    Serrano, O.

    2016-03-16

    Boating activities are one of the causes that threaten seagrass meadows and the ecosystem services they provide. Mechanical destruction of seagrass habitats may also trigger the erosion of sedimentary organic carbon (Corg) stocks, which may contribute to increasing atmospheric CO2. This study presents the first estimates of loss of Corg stocks in seagrass meadows due to mooring activities in Rottnest Island, Western Australia. Sediment cores were sampled from seagrass meadows and from bare but previously vegetated sediments underneath moorings. The Corg stores have been compromised by the mooring deployment from 1930s onwards, which involved both the erosion of existing sedimentary Corg stores and the lack of further accumulation of Corg. On average, undisturbed meadows had accumulated ~6.4 Kg Corg m−2 in the upper 50 cm-thick deposits at a rate of 34 g Corg m−2 yr−1. The comparison of Corg stores between meadows and mooring scars allows us to estimate a loss of 4.8 kg Corg m−2 in the 50 cm-thick deposits accumulated over ca. 200 yr as a result of mooring deployments. These results provide key data for the implementation of Corg storage credit offset policies to avoid the conversion of seagrass ecosystems and contribute to their preservation.

  10. Impact of mooring activities on carbon stocks in seagrass meadows

    Science.gov (United States)

    Serrano, O.; Ruhon, R.; Lavery, P. S.; Kendrick, G. A.; Hickey, S.; Masqué, P.; Arias-Ortiz, A.; Steven, A.; Duarte, C. M.

    2016-03-01

    Boating activities are one of the causes that threaten seagrass meadows and the ecosystem services they provide. Mechanical destruction of seagrass habitats may also trigger the erosion of sedimentary organic carbon (Corg) stocks, which may contribute to increasing atmospheric CO2. This study presents the first estimates of loss of Corg stocks in seagrass meadows due to mooring activities in Rottnest Island, Western Australia. Sediment cores were sampled from seagrass meadows and from bare but previously vegetated sediments underneath moorings. The Corg stores have been compromised by the mooring deployment from 1930s onwards, which involved both the erosion of existing sedimentary Corg stores and the lack of further accumulation of Corg. On average, undisturbed meadows had accumulated ~6.4 Kg Corg m‑2 in the upper 50 cm-thick deposits at a rate of 34 g Corg m‑2 yr‑1. The comparison of Corg stores between meadows and mooring scars allows us to estimate a loss of 4.8 kg Corg m‑2 in the 50 cm-thick deposits accumulated over ca. 200 yr as a result of mooring deployments. These results provide key data for the implementation of Corg storage credit offset policies to avoid the conversion of seagrass ecosystems and contribute to their preservation.

  11. Method of fabrication of anchored nanostructure materials

    Science.gov (United States)

    Seals, Roland D; Menchhofer, Paul A; Howe, Jane Y; Wang, Wei

    2013-11-26

    Methods for fabricating anchored nanostructure materials are described. The methods include heating a nano-catalyst under a protective atmosphere to a temperature ranging from about 450.degree. C. to about 1500.degree. C. and contacting the heated nano-catalysts with an organic vapor to affix carbon nanostructures to the nano-catalysts and form the anchored nanostructure material.

  12. Suction anchors for floating production systems

    Energy Technology Data Exchange (ETDEWEB)

    Tjelta, T.I.; Rusas, P. [Statoil a.s. (Norway); Edvardsen, G. [HEX a.s. (Norway)

    1996-12-31

    Since the suction anchor is a recent development in its current use, this work provides a brief historical background. It is shown that the suction anchor throughout evolution today is a competitive foundation solution for many applications. Examples from these categories are included in this paper. Also several installation methods are discussed. 3 refs., 7 figs., 2 tabs.

  13. Obituary: Ben Hawkins Moore, 1921-2003

    Science.gov (United States)

    Moore, James F.

    2004-12-01

    Ben H. Moore, emeritus professor of physics, astronomy and earth sciences at St. Cloud State University, Minnesota, died 7 November 2003, in South Padre Island, Texas. Ben was born 18 March 1921, in Kansas City, Missouri, to Fraser D. and Cora R. (Hawkins) Moore. Though his parents provided a strong guiding influence on Ben's development, Ben's career was impacted most clearly by his work as a student and research assistant for Allen Basset (Ben's father-in-law) at Park College. This relationship turned Ben's early interest in chemistry and biology toward a focus on physics. Ben received his undergraduate degree from Park College where he graduated Phi Delta Kappa. He received a MS in physics from Kansas State University. He also did post-masters work at the University of Kansas, the University of Colorado, the University of Washington and Temple University. In addition to his work as a research assistant, Ben taught at Park College as well as Washington Kansas High School, Wyandotte High School, and Kansas City Kansas Junior College before moving to St. Cloud State University in 1960. He retired from this teaching position in May 1982 but remained involved in activities of his department, including some teaching, through most of his years in retirement. Ben's accomplishments were mainly centered on his teaching. His development of courses and his rapport with students consistently brought praise from both his colleagues and his students. Above all, his work involved innovative development of the curriculum in the sciences at St. Cloud State. Soon after his arrival at the university, Ben took over the fledgling field geology course and continued to shape this offering into a program in earth sciences. The popularity of his classes, which attracted both general students and a growing number of majors, finally enabled the university to establish an earth sciences department in the late 1960's and Ben was the first chair of that department. In the mid-1960's Ben took

  14. Maxillary sinus perforation by orthodontic anchor screws.

    Science.gov (United States)

    Motoyoshi, Mitsuru; Sanuki-Suzuki, Rina; Uchida, Yasuki; Saiki, Akari; Shimizu, Noriyoshi

    2015-06-01

    To facilitate safe placement of orthodontic anchor screws (miniscrews), we investigated the frequency of maxillary sinus perforation after screw placement and the effect of sinus perforation on screw stability. Maxillary sinus perforations involving 82 miniscrews (diameter, 1.6 mm; length, 8 mm) were evaluated using cone-beam computed tomography. All miniscrews were placed in maxillary alveolar bone between the second premolar and first molar for anchorage for anterior retraction in patients undergoing first premolar extraction. The placement torque and screw mobility of each implant were determined using a torque tester and a Periotest device, and variability in these values in relation to sinus perforation was evaluated. Eight of the 82 miniscrews perforated the maxillary sinus. There was no case of sinusitis in patients with miniscrew perforation and no significant difference in screw mobility or placement torque between perforating and non-perforating miniscrews. The sinus floor was significantly thinner in perforated cases than in non-perforated cases. A sinus floor thickness of 6.0 mm or more is recommended in order to avoid miniscrew perforation of the maxillary sinus. PMID:26062857

  15. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... the screwlike fixture is permanently in place and well-healed, the device can be utilized. That actually takes about three to four ... is would this device address the ringing as well as the hearing problem. ... is no sound. It tends to be ringing but can have character of roaring or ...

  16. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... The Baha device uses sound vibrations, and those vibrations then are passed from the side with no functional hearing to the functioning ear internally on the opposite side. That happens very efficiently, with no loss of energy, because the placement of the device is surgically ...

  17. Autonomous Acoustic Receiver Deployment and Mooring Techniques for Use in Large Rivers and Estuaries

    Energy Technology Data Exchange (ETDEWEB)

    Titzler, P. Scott; McMichael, Geoffrey A.; Carter, Jessica A.

    2010-08-01

    Autonomous acoustic receivers are often deployed across a range of aquatic habitats to study aquatic species. The Juvenile Salmon Telemetry System autonomous acoustic receiver packages we deployed in the Columbia River and its estuary were comprised of an acoustic receiver, acoustic release, and mooring line sections and were deployed directly on the river bottom. Detection ranges and reception data from past optimization deployments helped determine acoustic receiver spacing in order to achieve acceptable detection probabilities for juvenile salmon survival estimation. Methods used in 2005, which resulted in a high equipment loss rate, were modified and used between 2006 and 2008 to increase crew safety and optimize receiver deployment and recovery operations in a large river system. By eliminating surface buoys and taglines (for anchor recovery), we experienced a recovery success rate greater than previous acoustic receiver deployment techniques used in the Columbia River and elsewhere. This autonomous acoustic receiver system has optimized deployment, recovery, and servicing efficiency to successfully detect acoustic-tagged salmonids in a variety of river environments.

  18. Anchored nanostructure materials and method of fabrication

    Science.gov (United States)

    Seals, Roland D; Menchhofer, Paul A; Howe, Jane Y; Wang, Wei

    2012-11-27

    Anchored nanostructure materials and methods for their fabrication are described. The anchored nanostructure materials may utilize nano-catalysts that include powder-based or solid-based support materials. The support material may comprise metal, such as NiAl, ceramic, a cermet, or silicon or other metalloid. Typically, nanoparticles are disposed adjacent a surface of the support material. Nanostructures may be formed as anchored to nanoparticles that are adjacent the surface of the support material by heating the nano-catalysts and then exposing the nano-catalysts to an organic vapor. The nanostructures are typically single wall or multi-wall carbon nanotubes.

  19. Numerical model validation for mooring systems: Method and application for wave energy converters

    OpenAIRE

    Harnois, V.; Sam D. Weller; Johanning, L.; Thies, P. R.; LE BOULLUEC, Marc; Le Roux, Dominique; Soule, Veronique; Ohana, Jeremy

    2015-01-01

    The design of wave energy mooring systems is challenging: overdesign incurs a significant cost penalty, underdesign may lead to a premature failure and incorrect design could reduce the power production. Consequently, compliant mooring systems are being developed for wave energy applications. This paper presents tank test results for a scale model of the buoy and mooring used at the SouthWest Mooring Test Facility (SWMTF), an offshore facility developed to conduct long-term sea trials for ...

  20. ALTERNATIF PERENCANAAN MOORING DOLPHIN PELABUHAN KHUSUS BATU BARA PT. SEMEN TONASA PANGKEP

    OpenAIRE

    Abadi, Yusri

    2014-01-01

    ABSTRAK Mooring dolphin adalah bagian yang sangat penting dan tidak terpisahkan pada konstruksi pelabuhan ataupun dermaga. Mooring dolphin memiliki berbagai macam jenis dan bentuk. Mooring dolphin berfungsi sebagai alat untuk menambat kapal yang berlabuh pada pelabuhan atau dermaga tersebut agar tidak bergeser jauh dari pelabuhan pada saat menerima gaya. Sehingga dengan demikian mooring dolphin yang terdiri dari tiga bagian utama yaitu, bollard, poer, dan tiang pancang yang direncanakan ...

  1. Bioabsorbable Suture Anchor Migration to the Acromioclavicular Joint: How Far Can These Implants Go?

    Directory of Open Access Journals (Sweden)

    Giovanna Medina

    2014-01-01

    Full Text Available Few complications regarding the use of bioabsorbable suture anchors in the shoulder have been reported. What motivated this case report was the unusual location of the anchor, found in the acromioclavicular joint which, to our knowledge, has never been reported so far. A 53-year old male with previous rotator cuff (RC repair using bioabsorbable suture anchors presented with pain and weakness after 2 years of surgery. A suspicion of retear of the RC led to request of a magnetic resonance image, in which the implant was found located in the acromioclavicular joint. The complications reported with the use of metallic implants around the shoulder led to the development of bioabsorbable anchors. Advantages are their absorption over time, minimizing the risk of migration or interference with revision surgery, less artifacts with magnetic resonance imaging, and tendon-to-bone repair strength similar to metallic anchors. Since the use of bioabsorbable suture anchors is increasing, it is important to know the possible complications associated with these devices.

  2. Mechanical characterization of bone anchors used with a bone-attached, parallel robot for skull surgery.

    Science.gov (United States)

    Kobler, Jan-Philipp; Prielozny, Lenka; Lexow, G Jakob; Rau, Thomas S; Majdani, Omid; Ortmaier, Tobias

    2015-05-01

    Bone-attached robots and microstereotactic frames, intended for deep brain stimulation and minimally invasive cochlear implantation, typically attach to a patient's skull via bone anchors. A rigid and reliable link between such devices and the skull is mandatory in order to fulfill the high accuracy demands of minimally invasive procedures while maintaining patient safety. In this paper, a method is presented to experimentally characterize the mechanical properties of the anchor-bone linkage. A custom-built universal testing machine is used to measure the pullout strength as well as the spring constants of bone anchors seated in four different bone substitutes as well as in human cranial bone. Furthermore, the angles at which forces act on the bone anchors are varied to simulate realistic conditions. Based on the experimental results, a substitute material that has mechanical properties similar to those of cranial bone is identified. The results further reveal that the pullout strength of the investigated anchor design is sufficient with respect to the proposed application. However, both the measured load capacity as well as the spring constants vary depending on the load angles. Based on these findings, an alternative bone anchor design is presented and experimentally validated. Furthermore, the results serve as a basis for stiffness simulation and optimization of bone-attached microstereotactic frames. PMID:25771430

  3. DEX-1 and DYF-7 establish sensory dendrite length by anchoring dendritic tips during cell migration.

    Science.gov (United States)

    Heiman, Maxwell G; Shaham, Shai

    2009-04-17

    Cells are devices whose structures delimit function. For example, in the nervous system, neuronal and glial shapes dictate paths of information flow. To understand how cells acquire their shapes, we examined the formation of a sense organ in C. elegans. Using time-lapse imaging, we found that sensory dendrites form by stationary anchoring of dendritic tips during cell-body migration. A genetic screen identified DEX-1 and DYF-7, extracellular proteins required for dendritic tip anchoring, which act cooperatively at the time and place of anchoring. DEX-1 and DYF-7 contain, respectively, zonadhesin and zona pellucida domains, and DYF-7 self-associates into multimers important for anchoring. Thus, unlike other dendrites, amphid dendritic tips are positioned by DEX-1 and DYF-7 without the need for long-range guidance cues. In sequence and function, DEX-1 and DYF-7 resemble tectorins, which anchor stereocilia in the inner ear, suggesting that a sensory dendrite anchor may have evolved into part of a mechanosensor. PMID:19344940

  4. Michael Moore kaevati kohtusse pettuse eest / Mari Rebane

    Index Scriptorium Estoniae

    Rebane, Mari

    2006-01-01

    Dokumentaalfilm "9/11 Fahrenheiti" ("Fahrenheit 9/11") : režissöör Michael Moore : USA 2004. Iraagi sõja invaliidistunud veteran andis režissööri kohtusse teda kujutavate flmikaadrite loata ja tenentsliku kasutamise pärast

  5. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... implanted, the Baha device will allow sound to travel through bone and restore close-to-normal hearing ... through the abutment so the sound can then travel through the head to the functional cochlea, or ...

  6. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... transmitted very efficiently through the head using bone conduction. The Baha device uses sound vibrations, and those ... changed from a normal soundwave into a bone conduction vibration, and that is what is passed then ...

  7. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... That happens very efficiently, with no loss of energy, because the placement of the device is surgically ... superficial on the skin, the transference of that energy is less efficient, and therefore the sound quality ...

  8. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... to-day situations, both socially or in a work situation, for example, a meeting where you may ... enough to respond appropriately. The way the device works is it uses the fact that sound is ...

  9. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... Marc, all applies to after this initial healing phase of several months. 00:42:26 MARC D. ... that the abutment stays and the device can change. So you can get an updated processor when ...

  10. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... a candidate at all for any of this technology. So what I'm going to have next ... whether the fixture can accommodate the ever-shrinking technology in today's world. Obviously if the device becomes ...

  11. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... noise. This device also lacks some of the disadvantages of more conventional treatments for that. It used ... snaps on to the abutment. And then we wind a little gauze around, the whole idea being ...

  12. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... an interference. 00:06:33 One of the problems with single-sided deafness is the head is ... would be transmitted to the better side. The problem with that type of a device is that ...

  13. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... not able to hear as well, or background noise may suddenly start up and then be an ... It allows for localization and improved hearing and noise. This device also lacks some of the disadvantages ...

  14. 33 CFR 401.12 - Minimum requirements-mooring lines and fairleads.

    Science.gov (United States)

    2010-07-01

    ... mooring lines Nos. 3 and 4 100 m or more but not more than 180 m Shall be at a location on the ship side... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Minimum requirements-mooring... Vessels § 401.12 Minimum requirements—mooring lines and fairleads. (a) Unless otherwise permitted by...

  15. Computing the Moore-Penrose Inverse of a Matrix with a Computer Algebra System

    Science.gov (United States)

    Schmidt, Karsten

    2008-01-01

    In this paper "Derive" functions are provided for the computation of the Moore-Penrose inverse of a matrix, as well as for solving systems of linear equations by means of the Moore-Penrose inverse. Making it possible to compute the Moore-Penrose inverse easily with one of the most commonly used Computer Algebra Systems--and to have the blueprint…

  16. 33 CFR 401.37 - Mooring at tie-up walls.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Mooring at tie-up walls. 401.37... OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.37 Mooring at tie-up walls. (a) Upon arrival at a lock, a vessel awaiting instructions to advance shall moor at the...

  17. 75 FR 38019 - Safety Zone; Fixed Mooring Balls, South of Barbers Pt. Harbor Channel, Oahu, HI

    Science.gov (United States)

    2010-07-01

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Fixed Mooring Balls, South of Barbers Pt... placement of six fixed mooring balls in an area south of Barbers Pt. Harbor Channel, the Coast Guard is... Safety Zone; Fixed Mooring Balls, South of Barbers Pt Harbor Channel, Oahu, Hawaii. (a) Location....

  18. Accuracy in GPS/Acoustic positioning on a moored buoy moving around far from the optimal position

    Science.gov (United States)

    Imano, M.; Kido, M.; Ohta, Y.; Takahashi, N.; Fukuda, T.; Ochi, H.; Hino, R.

    2015-12-01

    For detecting the seafloor crustal deformation and Tsunami associated with large earthquakes in real-time, it is necessary to monitor them just above the possible source region. For this purpose, we have been dedicated in developing a real-time continuous observation system using a multi-purpose moored buoy. Sea-trials of the system have been carried out near the Nanakai trough in 2013 and 2014 (Takahashi et al., 2014). We especially focused on the GPS/Acoustic measurement (GPS/A) in the system for horizontal crustal movement. The GPS/A on a moored buoy has a critical drawback compared to the traditional ones, in which the data can be stacked over ranging points fixed at an optimal position. Accuracy in positioning with a single ranging from an arbitrary point is the subject to be improved in this study. Here, we report the positioning results in the buoy system using data in the 2014 sea-trial and demonstrate the improvement of the result. We also address the potential resolving power in the positioning using synthetic tests. The target GPS/A site consists of six seafloor transponders (PXPs) forming a small inner- and a large outer-triangles. The bottom of the moored cable is anchored nearly the center of the triangles. In the sea-trial, 11 times successive ranging was scheduled once a week, and we plotted positioning results from different buoy position. We confirmed that scatter in positioning using six PXPs simultaneously is ten times smaller than that using individual triangle separately. Next, we modified the definition of the PXP array geometry using data obtained in a campaign observation. Definition of an array geometry is insensitive as far as ranging is made in the same position, however, severely affects the positioning when ranging is made from various positions like the moored buoy. The modified PXP array is slightly smaller and 2m deeper than the original one. We found that the scatter of positioning results in the sea-trial is reduced from 4m to 1

  19. Anchoring Adjusted Capital Asset Pricing Model

    OpenAIRE

    Hammad, Siddiqi

    2015-01-01

    An anchoring adjusted Capital Asset Pricing Model (ACAPM) is developed in which the payoff volatilities of well-established stocks are used as starting points that are adjusted to form volatility judgments about other stocks. Anchoring heuristic implies that such adjustments are typically insufficient. ACAPM converges to CAPM with correct adjustment, so CAPM is a special case of ACAPM. The model provides a unified explanation for the size, value, and momentum effects in the stock market. A ke...

  20. FRP-to-concrete joint assemblies anchored with multiple FRP anchors: experimental investigation

    OpenAIRE

    Zhang, H.; Smith, ST

    2010-01-01

    Higher strains can be developed in fibre-reinforced polymer (FRP) composites which are bonded to the surfaces of concrete members if the FRP is anchored. Anchors made from FRP (also known as FRP spike anchors but herein referred to as FRP anchors) are a promising type of anchorage as they can be applied to a variety of different shaped structural elements and they have been shown to be effective in en-hancing the strain capacity of externally bonded FRP. Limited research, however, has been co...

  1. Anchors as Semantic Primes in Value Construction: An EEG Study of the Anchoring Effect.

    Directory of Open Access Journals (Sweden)

    Qingguo Ma

    Full Text Available Previous research regarding anchoring effects has demonstrated that human judgments are often assimilated to irrelevant information. Studies have demonstrated that anchors influence the economic valuation of various products and experiences; however, the cognitive explanations of this effect remain controversial, and its neural mechanisms have rarely been explored. In the current study, we conducted an electroencephalography (EEG experiment to investigate the anchoring effect on willingness to accept (WTA for an aversive hedonic experience and the role of anchors in this judgment heuristic. The behavioral results demonstrated that random numbers affect participants' WTA for listening to pieces of noise. The participants asked for higher pay after comparing their WTA with higher numbers. The EEG results indicated that anchors also influenced the neural underpinnings of the valuation process. Specifically, when a higher anchor number was drawn, larger P2 and late positive potential amplitudes were elicited, reflecting the anticipation of more intensive pain from the subsequent noise. Moreover, higher anchors induced a stronger theta band power increase compared with lower anchors when subjects listened to the noises, indicating that the participants felt more unpleasant during the actual experience of the noise. The levels of unpleasantness during both anticipation and experience were consistent with the semantic information implied by the anchors. Therefore, these data suggest that a semantic priming process underlies the anchoring effect in WTA. This study provides proof for the robustness of the anchoring effect and neural evidence of the semantic priming model. Our findings indicate that activated contextual information, even seemingly irrelevant, can be embedded in the construction of economic value in the brain.

  2. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... cochlea, or inner ear. Let me show you what that device looks like. On your screen you will see the placement of the ... as we're drilling. 00:20:51 Now, what you can see here is that ... our drill. This is useful for orienting your pilot hole such that it's straight up and ...

  3. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... of the device is surgically implanted. The sound quality is very high-quality and it exceeds results that you can get ... is correcting for the sound for the highest quality. And then that is then changed from a ...

  4. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... implanted, the Baha device will allow sound to travel through bone and restore close-to-normal hearing for the patient. During the webcast you may email questions to the surgeon by clicking the MDirectAccess button at any time. This program represents Hartford Hospital's ongoing efforts to ...

  5. Fixation of a human rib by an intramedullary telescoping splint anchored by bone cement.

    Science.gov (United States)

    Liovic, Petar; Šutalo, Ilija D; Marasco, Silvana F

    2016-09-01

    A novel concept for rib fixation is presented that involves the use of a bioresorbable polymer intramedullary telescoping splint. Bone cement is used to anchor each end of the splint inside the medullary canal on each side of the fracture site. In this manner, rib fixation is achieved without fixation device protrusion from the rib, making the splint completely intramedullary. Finite element analysis is used to demonstrate that such a splint/cement composite can preserve rib fixation subjected to cough-intensity force loadings. Computational fluid dynamics and porcine rib experiments were used to study the anchor formation process required to complete the fixation. PMID:26733094

  6. Monitoring ground anchor using non-destructive ground anchor integrity test (NDT-GRANIT)

    International Nuclear Information System (INIS)

    Monitoring at ground anchor commonly uses a pull out test method, therefor we developing a non-destructive ground anchor integrity testing (NDT-GRANIT). NDT-GRANIT using the principle of seismic waves that have been modified into form of sweep signal, the signal will be demodulated, filtered, and Fourier transformation (inverse discrete Fourier transform) so the data can be interpreted reflected wave from the ground anchor. The method was applied to determine whether the ground anchor still gripped in the subsurface by looking the attenuation of the wave generated sources. From the result we can see that ground anchor does not grip. To validate the results of the comparison method of measurement used pile integrity test

  7. Intercomparison tests of moored current measurements in the upper ocean

    Science.gov (United States)

    Halpern, David; Weller, Robert A.; Briscoe, Melbourne G.; Davis, Russ E.; McCullough, James R.

    1981-01-01

    During the August-September 1977 Mixed Layer Experiment (Mile) and the July-September 1978 Joint Air-Sea Interaction (Jasin) project, moored current measurements were made in the upper ocean with Savonius rotor and vane vector-averaging current meters (VACM), dual orthogonal propeller vector-measuring current meters (VMCM), and dual orthogonal acoustic travel-time vector-averaging current meters (ACM). Wind speeds and significant wave heights reached 20ms-1 and 5 m. The influence of mooring motion upon ACM, VACM, and VMCM measurements are described. In the mixed layer above about 30 m depth where mean currents are relatively large, the effect of a surface-following buoy upon ACM, VACM, and VMCM velocity fluctuations at frequencies less than 0.3 cph was negligible; at frequencies above 4 cph, the VACM data contained the largest amount of mooring induced contamination. Below the mixed layer at depths greater than about 75 m, a subsurface mooring should be used; however, when a surface-following buoy was used, then VMCM data better approximated the spectrum of the fluctuations than VACM data. A spar-buoy should not be used to measure currents at depths as deep as 80 m. The frequency-dependent differences between VACM and VMCM and between VACM and ACM measurements are described. At frequencies less than 0.3 cph, the differences between the VACM and ACM or the VMCM records were not significant with 95% confidence limits, were always positive, and above 80 m depth were less than 20%. At frequencies above 4 cph, the VACM-VMCM differences were about 5 times larger than the VACM-ACM differences.

  8. Anchor-free NEMS non-volatile memory cell for harsh environment data storage

    International Nuclear Information System (INIS)

    This work demonstrates a novel anchor-free nano-electromechanical (NEMS) based non-volatile memory cell, suitable for high temperature (T ≤ 300 °C) and radiation prone harsh environment applications. The anchor-free circular metal beam is actuated by electrostatic force and is held in one of the bi-stable memory states by adhesion force between two smooth metal surfaces in contact. Smooth metal layers form strong van der Waals stiction between two surfaces in contact and memory detection (Logic-‘1’ / Logic-‘0’) is obtained by detecting the conductance between two fixed contacts. This anchor-free design offers highest density (9F2 footprint) compared to other mechanical memory devices reported to date. (paper)

  9. Diagnosis of traction electric motor at irregularity in speed of anchor rotation

    Directory of Open Access Journals (Sweden)

    D.V. Cyernyayev

    2013-06-01

    Full Text Available Purpose. To offer a complex diagnostic parameter (or system of parameters that would allow determining the fault of electric traction motor as well as electromagnetic and mechanical nature. Methodology. Technology transition to maintenance and repair of equipment in accordance with its actual condition are developed rapidly in the world practice in recent years. Control of equipment and forecasting of its technical condition with the use of non-destructive testing and diagnosis in-place methods is the basis of such technologies. In operation the reliability level of electrical machines including traction electric motor is very difficult to maintain. Analyzing failures of rolling stock, which arise from the operation, we can see that traction electric motors are the least reliable nodes. Diagnostics of traction electric motor at irregularity in speed of anchor rotation is proposed. A measurement device for irregularity in speed of anchor rotation was developed. Findings. An experimental research in order to determine the irregularity in speed of anchor armature shaft rotation and coupling of irregularity in speed of anchor rotation with traction electric motors nodes failures was executed. The experimental dependence of the waveform uneven rotation anchor for engines with different technical conditions. Originality. A method for diagnosis of traction electric motors at irregularity in speed of anchor armature shaft rotation was first proposed. This method after further improvement can be used at bench test of engines in their work without load and for the quality of the repair. Practical value. The device for detecting defects of the traction electric motor nodes as well as electromagnetic and mechanical nature without engine disassembly may be used for control of engine assembly after repair, and at testing of traction electric motor without load.

  10. Coupled Mooring Analyses for the WEC-Sim Wave Energy Converter Design Tool: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Sirnivas, Senu; Yu, Yi-Hsiang; Hall, Matthew; Bosma, Bret

    2016-07-01

    A wave-energy-converter-specific time-domain modeling method (WEC-Sim) was coupled with a lumped-mass-based mooring model (MoorDyn) to improve its mooring dynamics modeling capability. This paper presents a verification and validation study on the coupled numerical method. First, a coupled model was built to simulate a 1/25 model scale floating power system connected to a traditional three-point catenary mooring with an angle of 120 between the lines. The body response and the tension force on the mooring lines at the fairlead in decay tests and under regular and irregular waves were examined. To validate and verify the coupled numerical method, the simulation results were compared to the measurements from a wave tank test and a commercial code (OrcaFlex). Second, a coupled model was built to simulate a two-body point absorber system with a chain-connected catenary system. The influence of the mooring connection on the point absorber was investigated. Overall, the study showed that the coupling of WEC-Sim and the MoorDyn model works reasonably well for simulating a floating system with practical mooring designs and predicting the corresponding dynamic loads on the mooring lines. Further analyses on improving coupling efficiency and the feasibility of applying the numerical method to simulate WEC systems with more complex mooring configuration are still needed.

  11. ANCHORING EFFECT ANALYSIS OF TENSIONED BOLTS

    Institute of Scientific and Technical Information of China (English)

    夏建中

    1997-01-01

    The paper analyses quantitatively the anchoring effect of tensioned bolts on surrounding rock strength, and defines two concepts: one is the surrounding rock strength increased amount △τ13 and the other is the strength influence factor k. The anchoring effect of tensioned bolts is considered to increase a strength increased amount △τ13 where △τ13 is the product k and tensioned load p, i. e. △τ13= kp, where k is a function of two variables x and y. The distributive properties both △τ13 and k are also discussed in the paper, obtaining some useful results for designing bolting support parameters.

  12. Suppression of single-molecule conductance fluctuations using extended anchor groups on graphene and carbon-nanotube electrodes

    Science.gov (United States)

    Péterfalvi, Csaba G.; Lambert, Colin J.

    2012-08-01

    Devices formed from single molecules attached to noble-metal electrodes exhibit large conductance fluctuations, which inhibit their development as reproducible functional units. We demonstrate that single molecules with planar anchor groups attached to carbon-based electrodes are more resilient to atomic-scale variation in the contacts and exhibit significantly lower conductance fluctuations. We examine the conductance of a 2,6-dibenzylamino core-substituted naphthalenediimide chromophore attached to carbon electrodes by either phenanthrene anchors or more extended anchor groups, which include oligophenylene ethynylene spacers. We demonstrate that for the more spatially extended anchor groups conductance fluctuations are significantly reduced. The current-voltage characteristic arising from long-range tunneling is found to be strongly nonlinear with pronounced conductance suppression below a threshold voltage of approximately 2.5 V.

  13. Adaptive anchored inversion for Gaussian random fields using nonlinear data

    International Nuclear Information System (INIS)

    In a broad and fundamental type of ‘inverse problems’ in science, one infers a spatially distributed physical attribute based on observations of processes that are controlled by the spatial attribute in question. The data-generating field processes, known as ‘forward processes’, are usually nonlinear with respect to the spatial attribute, and are often defined non-analytically by a numerical model. The data often contain a large number of elements with significant inter-correlation. We propose a general statistical method to tackle this problem. The method is centered on a parameterization device called ‘anchors’ and an iterative algorithm for deriving the distribution of anchors conditional on the observed data. The algorithm draws upon techniques of importance sampling and multivariate kernel density estimation with weighted samples. Anchors are selected automatically; the selection evolves in iterations in a way that is tailored to important features of the attribute field. The method and the algorithm are general with respect to the scientific nature and technical details of the forward processes. Conceptual and technical components render the method in contrast to standard approaches that are based on regularization or optimization. Some important features of the proposed method are demonstrated by examples from the earth sciences, including groundwater flow, rainfall-runoff and seismic tomography. (paper)

  14. Monogenean anchor morphometry: systematic value, phylogenetic signal, and evolution.

    Science.gov (United States)

    Khang, Tsung Fei; Soo, Oi Yoon Michelle; Tan, Wooi Boon; Lim, Lee Hong Susan

    2016-01-01

    Background. Anchors are one of the important attachment appendages for monogenean parasites. Common descent and evolutionary processes have left their mark on anchor morphometry, in the form of patterns of shape and size variation useful for systematic and evolutionary studies. When combined with morphological and molecular data, analysis of anchor morphometry can potentially answer a wide range of biological questions. Materials and Methods. We used data from anchor morphometry, body size and morphology of 13 Ligophorus (Monogenea: Ancyrocephalidae) species infecting two marine mugilid (Teleostei: Mugilidae) fish hosts: Moolgarda buchanani (Bleeker) and Liza subviridis (Valenciennes) from Malaysia. Anchor shape and size data (n = 530) were generated using methods of geometric morphometrics. We used 28S rRNA, 18S rRNA, and ITS1 sequence data to infer a maximum likelihood phylogeny. We discriminated species using principal component and cluster analysis of shape data. Adams's K mult was used to detect phylogenetic signal in anchor shape. Phylogeny-correlated size and shape changes were investigated using continuous character mapping and directional statistics, respectively. We assessed morphological constraints in anchor morphometry using phylogenetic regression of anchor shape against body size and anchor size. Anchor morphological integration was studied using partial least squares method. The association between copulatory organ morphology and anchor shape and size in phylomorphospace was used to test the Rohde-Hobbs hypothesis. We created monogeneaGM, a new R package that integrates analyses of monogenean anchor geometric morphometric data with morphological and phylogenetic data. Results. We discriminated 12 of the 13 Ligophorus species using anchor shape data. Significant phylogenetic signal was detected in anchor shape. Thus, we discovered new morphological characters based on anchor shaft shape, the length between the inner root point and the outer root

  15. Anchor Stress Checking of Security Injection Tank

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The intention of the calculating is to check the anchor stresses of the security injection tank to know whether the stress is satisfied the code requirements on the basis of all the reaction forces gained in the static, seismic and thermal stress results.

  16. Stone anchors from Minicoy Island, Lakshadweep, India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.

    at Androth, Kadmat, Kavaratti and Minicoy. In addition to these finds, in recent past an Indo-Arabian type of stone anchor has come to lime light at the Jama Mosque of Funhilol of Minicoy. In this paper an attempt has been made to describe the Indo...

  17. Predicting Anchor Links between Heterogeneous Social Networks

    CERN Document Server

    Sajadmanesh, Sina; Khodadadi, Ali

    2016-01-01

    People usually get involved in multiple social networks to enjoy new services or to fulfill their needs. Many new social networks try to attract users of other existing networks to increase the number of their users. Once a user (called source user) of a social network (called source network) joins a new social network (called target network), a new inter-network link (called anchor link) is formed between the source and target networks. In this paper, we concentrated on predicting the formation of such anchor links between heterogeneous social networks. Unlike conventional link prediction problems in which the formation of a link between two existing users within a single network is predicted, in anchor link prediction, the target user is missing and will be added to the target network once the anchor link is created. To solve this problem, we use meta-paths as a powerful tool for utilizing heterogeneous information in both the source and target networks. To this end, we propose an effective general meta-pat...

  18. Analysis of Low-Frequency Damping in Mooring Lines for Floating Production Units

    OpenAIRE

    Magnussen, Eivind Tørset

    2014-01-01

    In this thesis, the relationship between mooring line damping and system responses, due to varying environmental conditions, is investigated. The responses focus mainly on the low-frequency (LF) components and on the modelling capabilities of coupled and uncoupled analysis.Moored vessels are exposed to time varying environmental loads, such as wind, waves and current, which give rise to large dynamic motions. The presence of mooring introduces a low stiffness and a high natural period in the ...

  19. Influence of Anchoring on Burial Depth of Submarine Pipelines

    Science.gov (United States)

    Zhuang, Yuan; Li, Yang; Su, Wei

    2016-01-01

    Since the beginning of the twenty-first century, there has been widespread construction of submarine oil-gas transmission pipelines due to an increase in offshore oil exploration. Vessel anchoring operations are causing more damage to submarine pipelines due to shipping transportation also increasing. Therefore, it is essential that the influence of anchoring on the required burial depth of submarine pipelines is determined. In this paper, mathematical models for ordinary anchoring and emergency anchoring have been established to derive an anchor impact energy equation for each condition. The required effective burial depth for submarine pipelines has then been calculated via an energy absorption equation for the protection layer covering the submarine pipelines. Finally, the results of the model calculation have been verified by accident case analysis, and the impact of the anchoring height, anchoring water depth and the anchor weight on the required burial depth of submarine pipelines has been further analyzed. PMID:27166952

  20. Influence of Anchoring on Burial Depth of Submarine Pipelines.

    Science.gov (United States)

    Zhuang, Yuan; Li, Yang; Su, Wei

    2016-01-01

    Since the beginning of the twenty-first century, there has been widespread construction of submarine oil-gas transmission pipelines due to an increase in offshore oil exploration. Vessel anchoring operations are causing more damage to submarine pipelines due to shipping transportation also increasing. Therefore, it is essential that the influence of anchoring on the required burial depth of submarine pipelines is determined. In this paper, mathematical models for ordinary anchoring and emergency anchoring have been established to derive an anchor impact energy equation for each condition. The required effective burial depth for submarine pipelines has then been calculated via an energy absorption equation for the protection layer covering the submarine pipelines. Finally, the results of the model calculation have been verified by accident case analysis, and the impact of the anchoring height, anchoring water depth and the anchor weight on the required burial depth of submarine pipelines has been further analyzed. PMID:27166952

  1. Assessment of Current State of Mooring Design in the Danish Wave Energy Sector

    DEFF Research Database (Denmark)

    Thomsen, Jonas Bjerg; Ferri, Francesco; Kofoed, Jens Peter

    2015-01-01

    The mooring system is a vital part of any floating wave energy converter, both in terms of ensuring station keeping but also as it constitutes a significant share of the total cost. Motivatedby the considerable amount of failures due to insufficient mooring and the cost of mooring today, the...... present study outlines the design procedure recommended by design standards and provides considerations on choice of tools for analysis. This is compared to the procedure used by four wave energy converter developers, to illustrate the state of their current mooring design. The study shows a clear...

  2. Experimental Study on Allowable Berthing and Mooring Conditions of An Oil Tanker

    Institute of Scientific and Technical Information of China (English)

    张日向; 刘忠波; 张宁川; 韩丽华

    2003-01-01

    When an oil tanker under the combined action of wind, waves and tidal current and is berthed or moored to a platform, the impact forces on the fenders and the tensile force in the mooring lines are important factors in the studies of berthing and mooring conditions. Based on the experiment of a berthing and mooring tanker model under the action of wind, wave and tidal current in the same direction, this paper studies the allowable berthing and mooring conditions by considering the tensile forces of mooring lines and impact forces on the fenders, as well as the impact energy on the fenders. And a method has been proposed here for motion amplitude analysis. A successful method to decrease impact forces on the fenders is put forward. Blowing-in wind and blowing-off wind and different angles between waves and the fenders are considered in the experimental study. In the berthing tests of the tanker model, the impact forces are measured and the impact energy is calculated, then the berthing conditions are determined. In the mooring tests of the tanker model, the mooring line tensile forces and impact forces are measured, and the allowable mooring conditions are given that will be useful to engineering design.

  3. Stone anchors of India: Findings, classification and significance.

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.

    Honolulu, Hawaii, May 12-16, 2014, Vol. 2: 973-986 973 Stone anchors of India: Findings, Classification and Significance Sila Tripati CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, India Email: sila@nio.org Abstract Various.... The making of anchors from the hero stones indicates their alternative use (Sila Tripati and Patnaik, 2008). Classification Stone anchors are classified according to character, shape and region. In general stone anchors have been classified...

  4. Susceptibility to anchoring effects: How openness-to-experience influences responses to anchoring cues

    OpenAIRE

    Todd McElroy; Keith Dowd

    2007-01-01

    Previous research on anchoring has shown this heuristic to be a very robust psychological phenomenon ubiquitous across many domains of human judgment and decision-making. Despite the prevalence of anchoring effects, researchers have only recently begun to investigate the underlying factors responsible for how and in what ways a person is susceptible to them. This paper examines how one such factor, the Big-Five personality trait of openness-to-experience, influences the effect of previously p...

  5. Neutral Fermion Excitations in the Moore-Read state at \

    OpenAIRE

    Moller, Gunnar; Wojs, Arkadiusz; Cooper, Nigel R.

    2010-01-01

    We present evidence supporting the weakly paired Moore-Read phase in the half-filled second Landau level, focusing on some of the qualitative features of its excitations. Based on numerical studies, we show that systems with odd particle number at the flux $N_\\phi=2N-3$ can be interpreted as a neutral fermion mode of one unpaired fermion, which is gapped. The mode is found to have two distinct minima, providing a signature that could be observed by photoluminescence. In the presence of two qu...

  6. Monitoring of a single point mooring in the VEGA field

    OpenAIRE

    Facchini, Luca; Rizzo, Michele; Spadaccini, Ostilio; Vignoli, Andrea

    2013-01-01

    In Sicily channel is operating from 1988 the offshore platform VEGA; in addition, the ship tanker Leonis is moored nearby the platform and coupled to a system tower-tanker. VEGA is the largest off-shore oil platform built in Italy. Oil production in Sicily began with the discovery of deposits in the areas of Ragusa in 1950 and Gela in 1956. The offshore exploration, from 1959, found some minor deposits, but only in the period 1978-80 through the acquisition of 3D seismic data the interpretati...

  7. Analysis of Motion in Single-Point Mooring Systems

    Directory of Open Access Journals (Sweden)

    Hans R. Sørheim

    1980-07-01

    Full Text Available A mathematical model of the slow motions of ships in single-point moorings is described. The model is used for analysis of stability of equilibrium positions. An analytical criterion for stability relating main system parameters is derived under simplifying assumptions. A numerical example with a 100 000 dwt tanker showed that the effect of wind and current are of equal importance with respect to system stability, and astern propulsion is generally required to avoid stable oscillations. Stability problems in waves have not been found. The effects of time varying excitations are discussed and illustrated by simulation.

  8. Patrick Moore's millennium yearbook : the view from AD 1001

    Science.gov (United States)

    Moore, Patrick, Chapman, Allan

    In a year that will probably be remembered almost as much for books about the millennium as for the turn of 2000 A.D itself, Patrick Moore's Millennium Yearbook celebrates.....well, the wrong millennium! This thoroughly entertaining book - which is for everyone, not just astronomers - contains articles on King Alfred's chronological work, reviews of the new Star Catalogue by the Arab Al-Sufi and the latest edition of Ptolemy's Almagast. And foreshadowing the change to metric units by 1000 years, the book uses arabic numbers instead of Roman - but there is a conversion table if you have trouble with the idea of "zero" and prefer the older system.

  9. Experimental Comparison of Dynamic Responses of a Tension Moored Floating Wind Turbine Platform with and without Spring Dampers

    Science.gov (United States)

    Wright, C.; O'Sullivan, K.; Murphy, J.; Pakrashi, V.

    2015-07-01

    The offshore wind industry is rapidly maturing and is now expanding to more extreme environments in deeper water and farther from shore. To date fixed foundation types (i.e. monopoles, jackets) have been primarily used but become uneconomical in water depths greater than 50m. Floating foundations have more complex dynamics but at the moment no design has reached commercialization, although a number of devices are being tested at prototype stage. The development of concepts is carried out through physical model testing of scaled devices such that to better understand the dynamics of the system and validate numerical models. This paper investigates the testing of a scale model of a tension moored wind turbine at two different scales and in the presence and absence of a spring damper controlling its dynamic response. The models were tested under combined wave and wind thrust loading conditions. The analysis compares the motions of the platform at different scales and structural conditions through RAO, testing a mooring spring damper for load reductions.

  10. How curved membranes recruit amphipathic helices and protein anchoring motifs

    DEFF Research Database (Denmark)

    Hatzakis, Nikos; Bhatia, Vikram Kjøller; Larsen, Jannik;

    2009-01-01

    : membrane-anchored proteins. The fact that unrelated structural motifs such as alpha-helices and alkyl chains sense MC led us to propose that MC sensing is a generic property of curved membranes rather than a property of the anchoring molecules. We therefore anticipate that MC will promote the...... redistribution of proteins that are anchored in membranes through other types of hydrophobic moieties....

  11. 33 CFR 401.14 - Anchor marking buoys.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Anchor marking buoys. 401.14 Section 401.14 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Condition of Vessels § 401.14 Anchor marking buoys. A highly visible anchor marking...

  12. Students' Anchoring Predisposition: An Illustration from Spring Training Baseball

    Science.gov (United States)

    Mohrweis, Lawrence C.

    2014-01-01

    The anchoring tendency results when decision makers anchor on initial values and then make final assessments that are adjusted insufficiently away from the initial values. The professional literature recognizes that auditors often risk falling into the judgment trap of anchoring and adjusting (Ranzilla et al., 2011). Students may also be unaware…

  13. Implantation of a polycaprolactone scaffold with subchondral bone anchoring ameliorates nodules formation and other tissue alterations

    OpenAIRE

    Vikingsson, Line; Sancho-Tello, Mar??a; Ruiz-Saur??, Amparo; Martinez-Diaz, Santos; G??mez-Tejedor, Jos?? Antonio; Gallego Ferrer, Gloria; Carda, Carmen; Monllau Garc??a, Juan Carlos; G??mez Ribelles, Jos?? Luis

    2016-01-01

    PURPOSE: Articular cartilage has limited repair capacity. Two different implant devices for articular cartilage regeneration were tested in vivo in a sheep model to evaluate the effect of subchondral bone anchoring for tissue repair. METHODS: The implants were placed with press-fit technique in a cartilage defect after microfracture surgery in the femoral condyle of the knee joint of the sheep and histologic and mechanical evaluation was done 4.5 months later. The first group consisted of a b...

  14. Geodesic defect anchoring on nematic shells.

    Science.gov (United States)

    Mirantsev, Leonid V; Sonnet, André M; Virga, Epifanio G

    2012-08-01

    Nematic shells are colloidal particles coated with nematic liquid crystal molecules, which may freely glide and rotate on the colloid's surface while keeping their long axis on the local tangent plane. Molecular dynamics simulations on a nanoscopic spherical shell indicate that under appropriate adhesion conditions for the molecules on the equator, the equilibrium nematic texture exhibits at each pole a pair of +1/2 defects so close to one another to be treated as one +1 defect. Spirals connect the polar defects, though the continuum limit of the interaction potential would not feature any elastic anisotropy. A molecular averaging justifies an anchoring defect energy that feels the geodesics emanating from the defect. All our observations are explained by such a geodesic anchoring, which vanishes on flat manifolds. PMID:23005713

  15. Recent Study of Drag Embedment Plate Anchors in China

    Institute of Scientific and Technical Information of China (English)

    Haixiao Liu

    2012-01-01

    Experimental and theoretical studies of drag embedment plate anchors recently carried out in Tianjin University are summarized in this research paper,which involve a series of important topics relevant to the study of drag anchors.The techniques for measuring the trajectory and movement direction of drag anchors in soils,the techniques for measuring the moving embedment point and reverse catenary shape of the embedded drag line,the penetration mechanism and kinematic behavior of drag anchors,the ultimate embedment depth of drag anchors,the movement direction of the anchor with an arbitrary fluke section,the reverse catenary properties of the embedded drag line,the interactional properties between drag anchor and installation line,the kinematic model of drag anchors in seabed soils,and the analytical method for predicting the anchor trajectory in soils will all be examined.The present work remarkably reduces the uncertainties in design and analysis of drag embedment plate anchors,and is beneficial to improving the application of this new type of drag anchor in offshore engineering.

  16. Red electroluminescence of ruthenium sensitizer functionalized by sulfonate anchoring groups.

    Science.gov (United States)

    Shahroosvand, Hashem; Abbasi, Parisa; Mohajerani, Ezeddin; Janghouri, Mohammad

    2014-06-28

    We have synthesized five novel Ru(ii) phenanthroline complexes with an additional aryl sulfonate ligating substituent at the 5-position [Ru(L)(bpy)2](BF4)2 (1), [Ru(L)(bpy)(SCN)2] (2), [Ru(L)3](BF4)2 (3), [Ru(L)2(bpy)](BF4)2 (4) and [Ru(L)(BPhen)(SCN)2] (5) (where L = 6-one-[1,10]phenanthroline-5-ylamino)-3-hydroxynaphthalene 1-sulfonic, bpy = 2,2'-bipyridine, BPhen = 4,7-diphenyl-1,10-phenanthroline), as both photosensitizers for oxide semiconductor solar cells (DSSCs) and light emitting diodes (LEDs). The absorption and emission maxima of these complexes red shifted upon extending the conjugation of the phenanthroline ligand. Ru phenanthroline complexes exhibit broad metal to ligand charge transfer-centered electroluminescence (EL) with a maximum near 580 nm. Our results indicated that a particular structure (2) can be considered as both DSSC and OLED devices. The efficiency of the LED performance can be tuned by using a range of ligands. Device (2) has a luminance of 550 cd m(-2) and maximum efficiency of 0.9 cd A(-1) at 18 V, which are the highest values among the five devices. The turn-on voltage of this device is approximately 5 V. The role of auxiliary ligands in the photophysical properties of Ru complexes was investigated by DFT calculation. We have also studied photovoltaic properties of dye-sensitized nanocrystalline semiconductor solar cells based on Ru phenanthroline complexes and an iodine redox electrolyte. A solar energy to electricity conversion efficiency (η) of 0.67% was obtained for Ru complex (2) under standard AM 1.5 irradiation with a short-circuit photocurrent density (Jsc) of 2.46 mA cm(-2), an open-circuit photovoltage (Voc) of 0.6 V, and a fill factor (ff) of 40%, which are all among the highest values for ruthenium sulfonated anchoring groups reported so far. Monochromatic incident photon to current conversion efficiency was 23% at 475 nm. Photovoltaic studies clearly indicated dyes with two SCN substituents yielded a higher Jsc for the

  17. Anchoring in a novel bimanual coordination pattern.

    Science.gov (United States)

    Maslovat, Dana; Lam, Melanie Y; Brunke, Kirstin M; Chua, Romeo; Franks, Ian M

    2009-02-01

    Anchoring in cyclical movements has been defined as regions of reduced spatial or temporal variability [Beek, P. J. (1989). Juggling dynamics. PhD thesis. Amsterdam: Free University Press] that are typically found at movement reversal points. For in-phase and anti-phase movements, synchronizing reversal points with a metronome pulse has resulted in decreased anchor point variability and increased pattern stability [Byblow, W. D., Carson, R. G., & Goodman, D. (1994). Expressions of asymmetries and anchoring in bimanual coordination. Human Movement Science, 13, 3-28; Fink, P. W., Foo, P., Jirsa, V. K., & Kelso, J. A. S. (2000). Local and global stabilization of coordination by sensory information. Experimental Brain Research, 134, 9-20]. The present experiment examined anchoring during acquisition, retention, and transfer of a 90 degrees phase-offset continuous bimanual coordination pattern (whereby the right limb lags the left limb by one quarter cycle), involving horizontal flexion about the elbow. Three metronome synchronization strategies were imposed: participants either synchronized maximal flexion of the right arm (i.e., single metronome), both flexion and extension of the right arm (i.e., double metronome within-limb), or flexion of each arm (i.e., double metronome between-limb) to an auditory metronome. In contrast to simpler in-phase and anti-phase movements, synchronization of additional reversal points to the metronome did not reduce reversal point variability or increase pattern stability. Furthermore, practicing under different metronome synchronization strategies did not appear to have a significant effect on the rate of acquisition of the pattern. PMID:18842313

  18. Molecular Conductance: Chemical Trends of Anchoring Groups

    OpenAIRE

    Ke, San-Huang; Baranger, Harold U.; Yang, Weitao

    2004-01-01

    Combining density functional theory calculations for molecular electronic structure with a Green function method for electron transport, we calculate from first principles the molecular conductance of benzene connected to two Au leads through different anchoring atoms -- S, Se, and Te. The relaxed atomic structure of the contact, different lead orientations, and different adsorption sites are fully considered. We find that the molecule-lead coupling, electron transfer, and conductance all dep...

  19. Anchor Toolkit - a secure mobile agent system

    OpenAIRE

    Mudumbai, Srilekha S.; Johnston, William; Essiari, Abdelilah

    2008-01-01

    Mobile agent technology facilitates intelligent operation in software systems with less human interaction. Major challenge to deployment of mobile agents include secure transmission of agents and preventing unauthorized access to resources between interacting systems, as either hosts, or agents, or both can act maliciously. The Anchor toolkit, designed by LBNL, handles the transmission and secure management of mobile agents in a heterogeneous distributed computing environment. It provide...

  20. Anchoring Heuristic and the Equity Premium Puzzle

    OpenAIRE

    Siddiqi, Hammad

    2015-01-01

    What happens when the anchoring and adjustment heuristic of Tversky and Kahneman (1974) is incorporated in the standard consumption-based capital asset pricing model (CCAPM)? The surprising finding is that it not only resolves the high equity-premium and low risk-free rate puzzles with a low risk-aversion coefficient, but also provides a unified framework for understanding countercyclical equity-premium, excess volatility, size, value, and momentum effects, and abnormal returns and volatiliti...

  1. Physical oceanographic mooring data (temperature, salinity, velocity including ADCP ice tracking) collected from Bering Strait Moorings A2, A3, A4 in Bering Strait from 2014-07-02 to 2015-07-05 (NCEI Accession 0155760)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from moorings deployed in Bering Strait from summer 2014 to summer 2015. Mooring deployments were funded by the NSF-Arctic Observing...

  2. Comparison of Mooring Loads in Survivability Mode on the Wave Dragon Wave Energy Converter Obtained by a Numerical Model and Experimental Data

    DEFF Research Database (Denmark)

    Parmeggiani, Stefano; Muliawan, Made Jaya; Gao, Zhen;

    2012-01-01

    , with experimental results derived from tank tests of a small scale model. Due to the complex geometry of the device, a sensitivity analysis is performed to discuss the influence of the mean position on the quality of the numerical predictions. Good correspondence is achieved between the experimental...... carried out numerically, through coupled analyses of alternative solutions. The present study deals with the preliminary hydrodynamic characterization of Wave Dragon needed in order to calibrate the numerical model to be used for the mooring design. A hydrodynamic analysis of the small scale model in the...... frequency domain is performed by the software HydroD, which uses WAMIT as core software. The quadratic damping term, accounting for the viscous effect, is determined through an iterative procedure aimed at matching numerical predictions on the mooring tension, derived through time domain coupled analysis...

  3. The Analysis Stability of Anchor Retaining Wall

    International Nuclear Information System (INIS)

    The construction of anchored retaining walls reach every day in the field of Civil Engineering especially in public works. Their dimensioning and stability are the axes of research for geotechnical. The rule is to reduce the active forces of the slide and increase the effective normal stress on the rupture surface. So that, we anchored tied-back (constituted by steel cables) in the stable ground located under the failure surface and we apply at the top a traction force. This effort can be distributed over the ground surface by means of small plates or massive reinforced concrete. The study of the stability of anchored retaining wall was also performed by using software GEO4. Many cases can be solved using analytical solutions available in the group GEO4 program, but for our standard model solution studied analytically proved unsatisfactory so we used a numerical analysis based on the method of finite element in this program. The results obtained by numerical study were interpreted to identify the precision numerical predictions. Moreover these methods were useful and economics in the realization of reinforced slopes by tied-buck. (author)

  4. Experimental study on the structural and mooring loads of the WEPTOS Wave Energy Converter

    DEFF Research Database (Denmark)

    Pecher, Arthur Francois Serge; Kofoed, Jens Peter

    This report presents the results of an experimental study that was performed on small scale model that was a replication of the full-scale Weptos WEC intended for DanWEC. During these tests, after optimising the mooring solution, various loads were measured that occur in the structure and mooring...

  5. Using the "Mary Tyler Moore Show" as a Feminist Teaching Tool

    Science.gov (United States)

    Jule, Allyson

    2010-01-01

    This paper explores the use of "The Mary Tyler Moore Show" as a teaching tool used with a group of final-year undergraduate students who gathered together last academic year (2007-8) to explore Women in Leadership, as part of a Communications course. The research focus was: How can the use of "The Mary Tyler Moore Show" (a 1970-7 American…

  6. Return to the far side of planet Moore! rambling through observations, friendships and antics of sir Patrick Moore

    CERN Document Server

    Mobberley, Martin

    2015-01-01

    The result of an exhaustive study of Sir Patrick Moore’s observations of the Moon and planets for more than 60 years, this book is a fantastic companion to the extremely popular, “It Came From Outer Space Wearing an RAF Blazer!” written by the same author.  Moore recorded his telescopic observations in his logbooks, which are reproduced and described here in detail, along with his sketches and notes. In this light, the author discusses the factors that caused Moore to switch from lunar observing to planetary and variable star observing.  He has also included personal recollections and humorous anecdotes from Moore’s friends and acquaintances, as well as a look at his best loved books. Further chapters describe Moore’s foreign travels and correspondence with those back home. Lastly, the author has not neglected a few of Moore’s most memorable television and radio appearances, which are examined along with a close up of what it was like to visit Moore’s beloved home of Farthings in Selsey. Essen...

  7. Physical oceanographic data collected from moorings deployed in the Bering Strait from July 2005 to July 2006 (NODC Accession 0013223)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Moorings were deployed from summer 2005 to summer 2006. Each data file contains the data from one instrument-year. The listed year is the year in which the mooring...

  8. FragAnchor: A Large-Scale Predictor of Glycosylphosphatidylinositol Anchors in Eukaryote Protein Sequences by Qualitative Scoring

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A glycosylphosphatidylinositol (GPI) anchor is a common but complex C-terminal post-translational modification of extracellular proteins in eukaryotes. Here we investigate the problem of correctly annotating GPI-anchored proteins for the growing number of sequences in public databases. We developed a computational system, called FragAnchor, based on the tandem use of a neural network (NN) and a hidden Markov model (HMM). Firstly, NN selects potential GPI-anchored proteins in a dataset, then HMM parses these potential GPI signals and refines the prediction by qualitative scoring. FragAnchor correctly predicted 91% of all the GPI-anchored proteins annotated in the Swiss-Prot database.In a large-scale analysis of 29 eukaryote proteomes, FragAnchor predicted that the percentage of highly probable GPI-anchored proteins is between 0.21% and 2.01%. The distinctive feature of FragAnchor, compared with other systems,is that it targets only the C-terminus of a protein, making it less sensitive to the background noise found in databases and possible incomplete protein sequences. Moreover, FragAnchor can be used to predict GPI-anchored proteins in all eukaryotes. Finally, by using qualitative scoring, the predictions combine both sensitivity and information content. The predictor is publicly available at http: // navet. ics. hawaii.edu/~fraganchor/NNHMM/NNHMM.html.

  9. Investigation of the environmental radioactivity around the mooring port

    International Nuclear Information System (INIS)

    Here are the main data for radioactivity examination performed in 1975 at Mutsu port, the mooring port of atomic energy vessel ''Mutsu''. No abnormality were observed in space γ ray dose ratio, and integrated doses measured by the thermofluorescence dosimeter at three monitoring posts in the port (G M tube) and three monitoring station in Mutsu City. A serial measurement of radioactivity concentration in sea water did not show any abnormality, either. Samples were taken from the surface soil of the ground, the bottom of the rivers, river water, drinking water, and milk and measured the total radioactivity by a gas flow counter. The measurement of the total β-radioactivity and radio nuclides analysis were carried out in sea water, the soil from the bottom of the sea and sea products. Abnormality considered to be caused by ''Mutsu'' did not observed at all. (Kobatake, H.)

  10. Moored systems designed to sense deep ocean earthquakes

    International Nuclear Information System (INIS)

    The ability to predict earthquakes and tsunamis is becoming increasingly important as world population continues to grow in high-density coastal metropolitan areas. Earthquakes which occur in and near undersea subduction zones where the earth's crust slides under continental masses generate highly destructive tsunamis. Deep ocean buoy systems and sensor implantation techniques are being developed to obtain seismic data from the earth's crust in water depths of 6000 m. For the first time, deep-sea drilling, high-resolution seismic sensors, and long-term, deep-ocean mooring technology are being combined to provide systems which continuously monitor earthquake activity in the deep ocean. Such systems provide vital seismic research information to the scientific community

  11. Dynamic performance of concrete undercut anchors for Nuclear Power Plants

    International Nuclear Information System (INIS)

    Graphical abstract: - Highlights: • Behavior of undercut anchors under dynamic actions simulating earthquakes. • First high frequency load and crack cycling tests on installed concrete anchors ever. • Comprehensive review of anchor qualification for Nuclear Power Plants. - Abstract: Post-installed anchors are widely used for structural and nonstructural connections to concrete. In many countries, concrete anchors used for Nuclear Power Plants have to be qualified to ensure reliable behavior even under extreme conditions. The tests required for qualification of concrete anchors are carried out at quasi-static loading rates well below the rates to be expected for dynamic actions deriving from earthquakes, airplane impacts or explosions. To investigate potentially beneficial effects of high loading rates and cycling frequencies, performance tests on installed undercut anchors were conducted. After introductory notes on anchor technology and a comprehensive literature review, this paper discusses the qualification of anchors for Nuclear Power Plants and the testing carried out to quantify experimentally the effects of dynamic actions on the load–displacement behavior of undercut anchors

  12. Analysis of Glenoid Inter-anchor Distance with an All-Suture Anchor System

    Science.gov (United States)

    Kramer, Jonathan; Robinson, Sean; Dutton, Pascual; Dickinson, Ephraim; Rodriguez, John Paul; Camisa, William; Leasure, Jeremi M.; Montgomery, William H.

    2016-01-01

    Objectives: Arthroscopic shoulder stabilization using suture anchors are commonly used techniques. More recently developed all-suture systems employ smaller diameter anchors, which increase repair contact area and allow greater placement density on narrow surfaces such as the glenoid. Our goal is investigate the strength characteristics of various inter-anchor distances in a human glenoid model. Methods: Twelve fresh-frozen human cadaveric glenoids were potted after the labrum was excised. The glenoids were then implanted with 1.4 mm all-suture anchors (Juggerknot, Biomet, Warsaw, IN) at varying inter-anchor distances. Anchors were implanted adjacent to one another or at 2 mm, 3 mm, or 5 mm distances using a template with pre-drilled holes. The glenoids were then underwent single cycle pullout testing using a test frame (Instron 8521, Instron Inc., Norwood, MA). A 5 N preload was applied to the construct and the actuator was driven away from the shoulder at a rate of 12.5mm/s as seen in Figure 1. Force and displacement were collected from the test frame actuator at a rate of 500 Hz. The primary outcomes were failure strength and stiffness. Stiffness was calculated from the initial linear region of the force displacement curve. Failure strength was defined as the first local maximum inflection point in the force displacement curve. Results: During load to fail testing, all but three of the specimens had both anchors pull out of the glenoid. The other mode of failure included one or both of the sutures failing. Stiffness was 13.52 ± 3.8, 17.97 ± 5.02, 17.59 ± 4.65 and 18.95 ± 4.67 N/mm for the adjacent, 2 mm, 3 mm and 5 mm treatment groups as shown Table 1. The adjacent group had a significantly lower stiffness compared to the other treatment groups. Failure strength was 48.68 ± 20.64, 76.16 ± 23.78, 73.19 ± 35.83 and 87.04 ± 34.67 N for the adjacent, 2 mm, 3 mm and 5 mm treatment groups as shown in Table 1. The adjacent group had a significantly lower

  13. Anchoring of FRET Sensors-A Requirement for Spatiotemporal Resolution.

    Science.gov (United States)

    Ivanova, Elena V; Figueroa, Ricardo A; Gatsinzi, Tom; Hallberg, Einar; Iverfeldt, Kerstin

    2016-01-01

    FRET biosensors have become a routine tool for investigating mechanisms and components of cell signaling. Strategies for improving them for particular applications are continuously sought. One important aspect to consider when designing FRET probes is the dynamic distribution and propagation of signals within living cells. We have addressed this issue by directly comparing an anchored (taFS) to a non-anchored (naFS) cleavable FRET sensor. We chose a microtubule-associated protein tau as an anchor, as microtubules are abundant throughout the cytosol of cells. We show that tau-anchored FRET sensors are concentrated at the cytoskeleton and enriched in the neurite-like processes of cells, providing high intensity of the total signal. In addition, anchoring limits the diffusion of the sensor, enabling spatiotemporally resolved monitoring of subcellular variations in enzyme activity. Thus, anchoring is an important aspect to consider when designing FRET sensors for deeper understanding of cell signaling. PMID:27196902

  14. Anchor Toolkit - a secure mobile agent system

    Energy Technology Data Exchange (ETDEWEB)

    Mudumbai, Srilekha S.; Johnston, William; Essiari, Abdelilah

    1999-05-19

    Mobile agent technology facilitates intelligent operation insoftware systems with less human interaction. Major challenge todeployment of mobile agents include secure transmission of agents andpreventing unauthorized access to resources between interacting systems,as either hosts, or agents, or both can act maliciously. The Anchortoolkit, designed by LBNL, handles the transmission and secure managementof mobile agents in a heterogeneous distributed computing environment. Itprovides users with the option of incorporating their security managers.This paper concentrates on the architecture, features, access control anddeployment of Anchor toolkit. Application of this toolkit in a securedistributed CVS environment is discussed as a case study.

  15. Starting point anchoring effects in choice experiments

    DEFF Research Database (Denmark)

    Ladenburg, Jacob; Olsen, Søren Bøye

    Anchoring is acknowledged as a potential source of considerable bias in Dichotomous Choice Contingent Valuation studies. Recently, another stated preference method known as Choice Experiments has gained in popularity as well as the number of applied studies. However, as the elicitation of...... subjectivity in the present study is gender dependent, pointing towards, that female respondents are prone to be affected by the price levels employed. Male respondents, on the other hand, are not sensitive towards these prices levels. Overall, this implicates that female respondents, when employing a low...

  16. The bone-anchored hearing aid

    DEFF Research Database (Denmark)

    Foghsgaard, Søren

    2014-01-01

    The bone-anchored hearing aid (Baha) was introduced in 1977 by Tjellström and colleagues and has now been used clinically for over 30 years. Generally, the outcomes are good, and several studies have shown improved audiological- and quality of life outcomes. The principle of the Baha is, that sound...... vibrations are led directly to the inner ear via the mastoid bone, bypassing the middle ear. This is achieved via an osseointegrated implant and a skin-penetrating abutment. Studies report high success rates and a majority of complications as typically minor in nature....

  17. Results from a winter 2009-2010 nearshore mooring test in 25 m water depth off Newport, Oregon

    Science.gov (United States)

    Dever, E. P.; Waldorf, B. W.; Risien, C. M.

    2010-12-01

    As part of the NSF-funded Ocean Observatories Initiative (OOI), two surface moorings will be placed in 25 m water depth off Newport, Oregon and Grays Harbor, Washington. These moorings are intended to acquire continuous observations over the inner-shelf, where the surface boundary layer interacts continuously with the ocean bottom boundary layer. The moorings will utilize the WHOI-developed stretch hose technology implemented at several operational moorings along the US east coast. For the purposes of mooring survival, the largest significant waves need to be considered. Analysis of the historical record indicates the 100-year return period storm would generate 14.5 m high waves. The harsh wind and wave conditions encountered over the inner-shelf have the potential to cause mooring failure either by destroying surface buoy components, or by causing subsurface mooring components to fail. For example, during a winter storm in December 2007, several NDBC moorings along the Oregon and Washington coasts broke. To test modeling of mooring performance under winter conditions we constructed a test/pilot mooring with hardware, communications and power similar to the OOI buoy design. The test focused on the survivability of components. The mooring was equipped with a load cell to examine responses under varying wave and mean flow conditions. A secondary objective of the deployment was to test Ship-to-Ship/Ship-to-Shore Wireless Access Protocol (SWAP) telemetry from the buoy to shore over a distance of 1.5 km. Load cell data as well as buoy instruments (conductivity, temperature) were telemetered. This test mooring was deployed near one of the OOI sites in 25 m of water off Newport, Oregon in late October 2009. The mooring parted in mid-March 2010, two weeks prior to planned recovery. We recovered all mooring components, and we will report on the mooring design, the test, and the science and engineering data received.

  18. Nominal Anchor Exchange Rate Policies as a Domestic Distortion

    OpenAIRE

    Anne O. Krueger

    1997-01-01

    This paper analyzes a nominal anchor exchange rate policy as a domestic distortion, in the tradition of international trade theory. It is shown that, in addition to the problems of sustainability and exit pinpointed in the exchange rate literature, a nominal anchor exchange rate policy, while in force, drives a wedge between the domestic and the international intertemporal marginal rates of substitution. The welfare cost of the Mexican use of the nominal anchor exchange rate policy prior to D...

  19. The impact of anchoring bias in the UK equity market

    OpenAIRE

    Koskinen, Matti

    2013-01-01

    PURPOSE OF THE STUDY The purpose of this thesis is to study how the anchoring bias, a cognitive bias, affects equity analysts' forecasts and what kind of implications this bias has for investors and managers of listed companies in the UK stock market. I test whether industry median forecast earnings per share can work as an anchor when analysts are estimating companies' future earnings and how this potential anchoring affects forecast errors, future stock returns, earnings surprises and s...

  20. Detection of Explosives in a Dynamic Marine Environment Using a Moored TNT Immunosensor

    Directory of Open Access Journals (Sweden)

    Paul T. Charles

    2014-02-01

    Full Text Available A field demonstration and longevity assessment for long-term monitoring of the explosive 2,4,6-trinitrotoluene (TNT in a marine environment using an anti-TNT microfluidic immunosensor is described. The TNT immunosensor is comprised of a microfluidic device with 39 parallel microchannels (2.5 cm × 250 µm × 500 µm, L × W × D fabricated in poly(methylmethacrylate (PMMA, then chemically functionalized with antibodies possessing a high affinity for TNT. Synthesized fluorescence reporter complexes used in a displacement-based assay format were used for TNT identification. For field deployment the TNT immunosensor was configured onto a submersible moored steel frame along with frame controller, pumps and TNT plume generator and deployed pier side for intermittent plume sampling of TNT (1h increments. Under varying current and tidal conditions trace levels of TNT in natural seawater were detected over an extended period (>18 h. Overnight operation and data recording was monitored via a web interface.

  1. Detection of Explosives in a Dynamic Marine Environment Using a Moored TNT Immunosensor

    Science.gov (United States)

    Charles, Paul T.; Adams, André A.; Deschamps, Jeffrey R.; Veitch, Scott; Hanson, Al; Kusterbeck, Anne W.

    2014-01-01

    A field demonstration and longevity assessment for long-term monitoring of the explosive 2,4,6-trinitrotoluene (TNT) in a marine environment using an anti-TNT microfluidic immunosensor is described. The TNT immunosensor is comprised of a microfluidic device with 39 parallel microchannels (2.5 cm × 250 μm × 500 μm, L × W × D) fabricated in poly(methylmethacrylate) (PMMA), then chemically functionalized with antibodies possessing a high affinity for TNT. Synthesized fluorescence reporter complexes used in a displacement-based assay format were used for TNT identification. For field deployment the TNT immunosensor was configured onto a submersible moored steel frame along with frame controller, pumps and TNT plume generator and deployed pier side for intermittent plume sampling of TNT (1h increments). Under varying current and tidal conditions trace levels of TNT in natural seawater were detected over an extended period (>18 h). Overnight operation and data recording was monitored via a web interface. PMID:24583970

  2. Decoding Cytoskeleton-Anchored and Non-Anchored Receptors from Single-Cell Adhesion Force Data.

    Science.gov (United States)

    Sariisik, Ediz; Popov, Cvetan; Müller, Jochen P; Docheva, Denitsa; Clausen-Schaumann, Hauke; Benoit, Martin

    2015-10-01

    Complementary to parameters established for cell-adhesion force curve analysis, we evaluated the slope before a force step together with the distance from the surface at which the step occurs and visualized the result in a two-dimensional density plot. This new tool allows detachment steps of long membrane tethers to be distinguished from shorter jumplike force steps, which are typical for cytoskeleton-anchored bonds. A prostate cancer cell line (PC3) immobilized on an atomic-force-microscopy sensor interacted with three different substrates: collagen-I (Col-I), bovine serum albumin, and a monolayer of bone marrow-derived stem cells (SCP1). To address PC3 cells' predominant Col-I binding molecules, an antibody-blocking β1-integrin was used. Untreated PC3 cells on Col-I or SCP1 cells, which express Col-I, predominantly showed jumps in their force curves, while PC3 cells on bovine-serum-albumin- and antibody-treated PC3 cells showed long membrane tethers. The probability density plots thus revealed that β1-integrin-specific interactions are predominately anchored to the cytoskeleton, while the nonspecific interactions are mainly membrane-anchored. Experiments with latrunculin-A-treated PC3 cells corroborated these observations. The plots thus reveal details of the anchoring of bonds to the cell and provide a better understanding of receptor-ligand interactions. PMID:26445433

  3. Illusion of Relevance: Anchoring in Economic and Financial Knowledge

    Directory of Open Access Journals (Sweden)

    Andrey Kudryavtse

    2010-12-01

    Full Text Available Contemporary research documents various psychological aspects of economic thought and decision-making. The main goal of our study is to analyze the role of the anchoring (bias(Tversky and Kahneman, 1974 in perceiving economic and financial information, and, in particular, the effect of perceived relevance of the anchors on the degree of the bias. Anchoring bias refers to people's tendency to form their estimates for different categories, starting from a particular available, and often irrelevant, value and insufficiently adjusting their final judgments from this starting value. We carry out an experiment involving a group of MBA students, asking them to recall a number of recent economic and financial indicators (stock and bond market index returns, rates of inflation, currency exchange rates, etc., with half of the participants receiving actual information about some unrelated indicators (anchors, before answering the questions. We document that significant anchoring bias is exhibited, on average, for each of our experimental questions and by vast majority of the participants, the degree of the bias being higher for women and older participants. Furthermore, in the context of the effect of anchors' perceived relevance, we find that people exhibit significantly stronger bias in cases when the anchor is presented as a similar category. Our findings indicate that if, at least at the first glance, an anchor bears some similarity to the target question, then the resulting answer may be more assimilated towards the anchor

  4. RRS Discovery Cruise D359, 17 Dec 2010-14 Jan 2011. RAPID moorings cruise report

    OpenAIRE

    Cunningham, S. A.; et al.

    2011-01-01

    This cruise report covers scientific operations conducted during RRS Discovery Cruise D359. Cruise D359 departed from São Antonio, Cape Verde on Friday 17th December 2010 arriving Santa Cruz de Tenerife Friday 14th December 2011. The purpose of the cruise was the refurbishment of an array of moorings on the mid-­Atlantic Ridge and off the Moroccan Coast at a nominal latitude of 26.5°N. The moorings are part of a purposeful Atlantic wide mooring array for monitoring the Atlantic Meridion...

  5. RV Knorr Cruise KN200-4, 13 Apr-03 May 2011. RAPID Mooring Cruise

    OpenAIRE

    Johns, W.; Frajka-Williams, E.; et al, .

    2011-01-01

    This report describes the mooring operations conducted during RV Knorr cruise KN200-4 between 13 April and 3 May 2011. These mooring operations were completed as part of the United Kingdom Natural Environment Research Council (NERC) funded RAPID-WATCH Programme to monitor the Atlantic Meridional Overturning Circulation (MOC) at 26.5°N. The primary purpose on this cruise for the UK team was to service the RAPID Western Boundary moorings while the US teams worked on the Western Boundary Tim...

  6. The Contribution of Environmental Siting and Permitting Requirements to the Cost of Energy for Marine and Hydrokinetic Devices

    Energy Technology Data Exchange (ETDEWEB)

    Copping, Andrea E.; Geerlofs, Simon H.

    2011-05-09

    Responsible deployment of marine and hydrokinetic (MHK) devices in estuaries, coastal areas, and major rivers requires that biological resources and ecosystems be protected through siting and permitting (consenting) processes. Scoping appropriate deployment locations, collecting pre-installation (baseline) and post-installation data add to the cost of developing MHK projects, and hence to the cost of energy. Under the direction of the U.S. Department of Energy, Pacific Northwest National Laboratory scientists have developed logic models that describe studies and processes for environmental siting and permitting. Each study and environmental permitting process has been assigned a cost derived from existing and proposed tidal, wave, and riverine MHK projects. Costs have been developed at the pilot scale, and for commercial arrays. This work is carried out under the U.S. Department of Energy reference model project, with the costs for engineering, deployment strategies, mooring and anchoring configurations, and maintenance operations, being developed by a consortium of Department of Energy national laboratories and universities. The goal of the reference model is to assist the MHK industry to become a cost-competitive contributor of renewable energy, by identifying those aspects of MHK projects that contribute significantly to the cost of energy, and directing research funding towards lowering those costs.

  7. Time Domain Simulation of a One Line Failure for a DP-assisted Mooring System

    Institute of Scientific and Technical Information of China (English)

    Jianxun Zhu; Liping Sun; Shengnan Liu; Jichuang Kang

    2014-01-01

    This paper focuses on the research of a semi-submersible platform equipped with a DP-assisted mooring system. Based on the working principles of the DP-assisted mooring system and the model of the platform motion, a time domain simulation program is applied to analyze the impact, in the case of one line failure, on the platform motion, power consumption of the thrusters and the tension of the mooring lines. The results show that, under the 10-year wind dominant, a one line failure will have little impact on the tension of the mooring lines. When the failure line is windward, the power consumption will increase greatly with a weakened position of accuracy. However when the failure line is leeward, the power consumption will be reduced with a partly strengthened position of accuracy.

  8. Moored ADCP current measurements from Mamala Bay, Oahu, Hawaii during 1997 - 1998 (NODC Accession 0000624)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A downward-looking moored ADCP instrument was deployed at the surface about a mile south of Honolulu Harbor in waters of about 280 feet. The instrument was in...

  9. Ameerika rahva tunnustus innustab Moore'i jätkama / Margit Tõnson

    Index Scriptorium Estoniae

    Tõnson, Margit, 1978-

    2005-01-01

    Ameerika kinokülastajad valisid 2004. aasta oma maa parimaks filmiks (People's Choice Award) Michael Moore'i dokumentaali "Fahrenheit 9/11". Lisa : nimekiri "Rahva lemmikud" teistest auhinnasaajatest

  10. Statistical Change Detection for Diagnosis of Buoyancy Element Defects on Moored Floating Vessels

    DEFF Research Database (Denmark)

    Blanke, Mogens; Fang, Shaoji; Galeazzi, Roberto; Leira, Bernt J.

    Floating platforms with mooring systems are used extensively in off-shore operations. Part of the mooring systems are underwater buoyancy elements that are attached to the mooring lines. Loss or damage of a buoyancy element is invisible but changes the characteristics of the mooring system and...... alters its ability to provide the necessary responses to withstand loads from weather. Damage of a buoyancy element increases the operation risk and could even cause abortion during an oil-offloading. The objective of this paper is to diagnose the loss of a buoyancy element using diagnostic methods....... After residual generation, statistical change detection scheme is derived from mathematical models supported by experimental data. To experimentally verify loss of an underwater buoyancy element, an underwater line breaker is designed to create realistic replication of abrupt faults. The paper analyses...

  11. Diagnosis and Fault-Tolerant Control for Thruster-Assisted Position Mooring System

    DEFF Research Database (Denmark)

    Nguyen, Trong Dong; Blanke, Mogens; Sørensen, Asgeir

    2007-01-01

    Development of fault-tolerant control systems is crucial to maintain safe operation of o®shore installations. The objective of this paper is to develop a fault- tolerant control for thruster-assisted position mooring (PM) system with faults occurring in the mooring lines. Faults in line's pretens......Development of fault-tolerant control systems is crucial to maintain safe operation of o®shore installations. The objective of this paper is to develop a fault- tolerant control for thruster-assisted position mooring (PM) system with faults occurring in the mooring lines. Faults in line......'s pretension or line breaks will degrade the performance of the positioning of the vessel. Faults will be detected and isolated through a fault diagnosis procedure. When faults are detected, they can be accommodated through the control action in which only parameter of the controlled plant has to be updated to...

  12. AWI Moored ULS Data, Greenland Sea and Fram Strait, 1991-2002

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set consists of Upward Looking Sonar (ULS) data from 11 moorings in the Greenland Sea. Parameters in the processed data files include ice draft, water...

  13. Buoyancy package for self-contained acoustic doppler current profiler mooring

    Digital Repository Service at National Institute of Oceanography (India)

    Venkatesan, R.; Krishnakumar, V.

    A buoyancy package for self-contained Acoustic Doppler Current Profiler(SC-ADCP 1200 RD instruments USA) was designed and fabricated indigenously, for subsurface mooring in coastal waters. The system design is discussed. The design to keep SC...

  14. Moored ADCP Current Measurements from Mamala Bay, Oahu, Hawaii during 1997-1998 (NODC Accession 0000624)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A downward-looking moored ADCP instrument was deployed at the surface about a mile south of Honolulu Harbor in waters of about 280 feet. The instrument was in...

  15. Camille Flammarion's the planet Mars as translated by Patrick Moore

    CERN Document Server

    2015-01-01

    Camille Flammarion (1842-1925) began his career at 16 as a human computer under the great mathematician U. J. J. Le Verrier at the Paris Observatory.  He soon tired of the drudgery; he was drawn to more romantic vistas, and at 19 wrote a book on an idea that he was to make his own—the habitability of other worlds.  There followed a career as France’s greatest popularizer of astronomy, with over 60 titles to his credit.  An admirer granted him a chateau at Juvisy-sur-l’Orge, and he set up a first-rate observatory dedicated to the study of the planet Mars. Finally, in 1892, he published his masterpiece, La Planete Mars et ses conditions d’habitabilite, a comprehensive summary of three centuries’ worth of literature on Mars, much of it based on his own personal research into rare memoirs and archives.  As a history of that era, it has never been surpassed, and remains one of a handful of indispensable books on the red planet. Sir Patrick Moore (1923-2012) needs no introduction; his record of popula...

  16. Dynamically Scaled Model Experiment of a Mooring Cable

    Directory of Open Access Journals (Sweden)

    Lars Bergdahl

    2016-01-01

    Full Text Available The dynamic response of mooring cables for marine structures is scale-dependent, and perfect dynamic similitude between full-scale prototypes and small-scale physical model tests is difficult to achieve. The best possible scaling is here sought by means of a specific set of dimensionless parameters, and the model accuracy is also evaluated by two alternative sets of dimensionless parameters. A special feature of the presented experiment is that a chain was scaled to have correct propagation celerity for longitudinal elastic waves, thus providing perfect geometrical and dynamic scaling in vacuum, which is unique. The scaling error due to incorrect Reynolds number seemed to be of minor importance. The 33 m experimental chain could then be considered a scaled 76 mm stud chain with the length 1240 m, i.e., at the length scale of 1:37.6. Due to the correct elastic scale, the physical model was able to reproduce the effect of snatch loads giving rise to tensional shock waves propagating along the cable. The results from the experiment were used to validate the newly developed cable-dynamics code, MooDy, which utilises a discontinuous Galerkin FEM formulation. The validation of MooDy proved to be successful for the presented experiments. The experimental data is made available here for validation of other numerical codes by publishing digitised time series of two of the experiments.

  17. Torre TV Emley Moore - Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Geoffrey Rooke, Ove Arup Partners, Ingenieros Consultores

    1973-11-01

    Full Text Available The new Emley Moor television tower was built to replace a guyed steel mast which collapsed at the site in March 1969. It is the first tower of its kind in the UK and, at 330 m height, it is the third highest such tower in the world. We describe here the methods of design and the construction which enabled the new broadcasting aerials to be brought into service within nineteen months of the Consulting Engineer's initial briefing from the Client.Esta nueva torre fue construida para sustituir el primitivo mástil de acero, atirantado, que se desplomó, en el mismo lugar, el mes de mayo de 1969. Se trata de la primera torre de este tipo que se levanta en el Reino Unido, y es, con sus 330 m de altura, la tercera del mundo. En este artículo describimos detalles del proyecto y los métodos de construcción, que han permitido realizar y poner en servicio tan importante obra, dentro de los 16 meses programados.

  18. Mooring System of Ocean Turbulence Observation Based on Submerged Buoy

    Institute of Scientific and Technical Information of China (English)

    SONG Da-lei; SUN Jing-jing; XUE Bing; JIANG Qian-li; WU Bing-wei

    2013-01-01

    A comparison experiment has been taken in the Kiaochow Bay between a newly designed mooring turbulence observation instrument (MTOI) and microstructure profiler MSS60 made by Sea & Sun.The whole observing system is based on a submerged buoy,in which the turbulence observation instrument is embedded,with a streamline-shape floating body,which is made of buoyancy material of glass microsphere.For the movement of seawater and the cable shaking strongly anytime influence the behaviors of the floating body,the accelerate sensors are used for the vibration measurement in the instrument together with the shear probe sensor.Both the vibration data and the shear data are acquired by the instrument at the same time.During data processing,the vibration signals can be removed and leave the shear data which we really need.In order to prove the reliability of the new turbulence instrument MTOI,a comparison experiment was designed.The measuring conditions are the same both in time and space.By this way,the two groups of data are comparable.In this paper,the conclusion gives a good similarity of 0.93 for the two groups of shear data in dissipation rate.The processing of the data acquired by MTOI is based on the cross-spectrum analysis,and the dissipation rate of it matches the Nasmyth spectrum well.

  19. Sea wave impact on a ship moored at the berth with a stilling pool

    OpenAIRE

    K.K. Semenov; V.A. Leontiev; I.S. Nudner

    2015-01-01

    When designing berths and ship mooring systems near berths, it is necessary to protect ships from dangerous displacements. To make a well-reasoned choice, it is necessary to make estimates of the characteristics of sea wave impact on the ship (with respect to the steady-wave mode in the waters). The results of numeric calculations are better suited for engineering purposes. This paper presents a mathematical model to estimate hydrodynamic characteristics of wave impact on the ship moored...

  20. Dynamic Analysis of Mooring Cables with Application to Floating Offshore Wind Turbines

    OpenAIRE

    Petrone, C.; Oliveto, N. D.; Sivaselvan, M. V.

    2015-01-01

    Floating offshore wind turbines are recently being considered widely for adoption in the wind power industry, attracting interest of several researchers and calling for the development of appropriate computational models and techniques. In the present work, a nonlinear finite-element formulation is proposed and applied to the static and dynamic analysis of mooring cables. Numerical examples are presented, and in particular, a mooring cable typically used for floating offshore wind turbines is...

  1. Development of an Efficient Design Technique for the Optimisation of Mooring Systems for Wave Energy Arrays

    OpenAIRE

    Kirrane, P.; Fabricius, P; Morvan, R.

    2011-01-01

    Research, funded by the Marine Institute, was carried out on mooring systems for wave energy arrays. An outline of the research results and outcomes are presented in this report. The objectives of the research were to: review the wave energy industry and define design parameters; establish a comprehensive set of design curves to facilitate the selection of a preliminary mooring system; develop trends in system response from the evaluation of a broad range of Wave Energy Converter (WEC) specif...

  2. Understanding Rasch Measurement: Partial Credit Model and Pivot Anchoring.

    Science.gov (United States)

    Bode, Rita K.

    2001-01-01

    Describes the Rasch measurement partial credit model, what it is, how it differs from other Rasch models, and when and how to use it. Also describes the calibration of instruments with increasingly complex items. Explains pivot anchoring and illustrates its use and describes the effect of pivot anchoring on step calibrations, item hierarchy, and…

  3. “The devil looks ten times worse with a white face”: Colours in Richard Brome’s The English Moor

    OpenAIRE

    PARAVANO, Cristina

    2015-01-01

    This paper purposes to investigate the multiple meanings of the black and white opposition which lies at the basis of the plot of Richard Brome’s The English Moor. This binary can be seen as a contrast between Englishness and otherness as the oxymoronic title may suggest. In the play, the usurer Quicksands dresses up his own wife Millicent and other women as Moorish servants using black-face make-up. The way in which Brome uses black face as a theatrical device to vehicle a cultural ideology ...

  4. Evolution and formation of North Atlantic Eighteen Degree Water in the Sargasso Sea from moored data

    Science.gov (United States)

    Davis, Xujing Jia; Straneo, Fiammetta; Kwon, Young-Oh; Kelly, Kathryn A.; Toole, John M.

    2013-07-01

    Two profiling subsurface moorings were deployed as part of the CLIvar MOde Water Dynamics Experiment (CLIMODE) to study the formation and evolution of Eighteen Degree Water (EDW) from November 2006 to November 2007. Both moorings were deployed south of the Gulf Stream in the EDW outcrop region, the northwestern part of the subtropical gyre of the North Atlantic. The two moorings captured the seasonal evolution of EDW characterized by gradual mixed layer deepening and wintertime outcrop, rapid restratification from May to June and slower dissipation during the rest of the year. Superimposed on this seasonal cycle, the moored records are characterized by high frequency passing of eddies with a characteristic time scale of ˜10 days, i.e. it took about 10 days for eddies to pass the mooring sites. The net impact of these eddy fluxes is evaluated by analyzing one-dimensional heat and salt budgets of the upper ocean at the moorings and comparing them to the local air-sea fluxes. It is shown that oceanic lateral fluxes converge heat and salt into the formation region during winter thus offsetting the heat loss to the atmosphere and influencing the formation of EDW. A comparison with results from a one-dimensional model shows that without the lateral fluxes EDW would outcrop earlier and it would be colder and fresher. The warm, salty waters transported into the region originate from the Gulf Stream and this suggests that frontal processes likely play a fundamental role in EDW formation and its evolution.

  5. Breaking anchored droplets in a microfluidic Hele-Shaw cell

    CERN Document Server

    Amselem, Gabriel; Gallaire, François; Baroud, Charles N

    2015-01-01

    We study microfluidic self digitization in Hele-Shaw cells using pancake droplets anchored to surface tension traps. We show that above a critical flow rate, large anchored droplets break up to form two daughter droplets, one of which remains in the anchor. Below the critical flow velocity for breakup the shape of the anchored drop is given by an elastica equation that depends on the capillary number of the outer fluid. As the velocity crosses the critical value, the equation stops admitting a solution that satisfies the boundary conditions; the drop breaks up in spite of the neck still having finite width. A similar breaking event also takes place between the holes of an array of anchors, which we use to produce a 2D array of stationary drops in situ.

  6. Triple labrum tears repaired with the JuggerKnot™ soft anchor: Technique and results

    Directory of Open Access Journals (Sweden)

    Vivek Agrawal

    2015-01-01

    Full Text Available Purpose: The 2-year outcomes of patients undergoing repair of triple labrum tears using an all-suture anchor device were assessed. Materials and Methods: Eighteen patients (17 male, one female; mean age 36.4 years, range: 14.2-62.3 years with triple labrum tears underwent arthroscopic repair using the 1.4 mm JuggerKnot Soft Anchor (mean number of anchors 11.5, range: 9-19 anchors. Five patients had prior surgeries performed on their operative shoulder. Patients were followed for a mean of 2.0 years (range: 1.6-3.0 years. Constant-Murley shoulder score (CS and Flexilevel scale of shoulder function (FLEX-SF scores were measured, with preoperative and final postoperative mean scores compared with a paired Student′s t-test (P < 0.05. Magnetic resonance imaging (MRI was also performed at final postoperative. Results: Overall total CS and FLEX-SF scores increased from 52.9 ± 20.4 to 84.3 ± 10.7 (P < 0.0001 and from 29.3 ± 4.7 to 42.0 ± 7.3 (P < 0.0001, respectively. When divided into two groups by whether or not glenohumeral arthrosis was present at the time of surgery (n = 9 each group, significant improvements in CS and FLEX-SF were obtained for both groups (P < 0.0015. There were no intraoperative complications. All patients, including contact athletes, returned to their preinjury level of sports activity and were satisfied. MRI evaluation revealed no instances of subchondral cyst formation or tunnel expansion. Anchor tracts appeared to heal with fibrous tissue, complete bony healing, or combined fibro-osseous healing. Conclusion: Our results are encouraging, demonstrating a consistent healing of the anchor tunnels through arthroscopic treatment of complex labrum lesions with a completely suture-based implant. It further demonstrates a meaningful improvement in patient outcomes, a predictable return to activity, and a high rate of patient satisfaction. Level of Evidence: Level IV case series.

  7. Moored surface buoy observations of the diurnal warm layer

    KAUST Repository

    Prytherch, J.

    2013-09-01

    An extensive data set is used to examine the dynamics of diurnal warming in the upper ocean. The data set comprises more than 4700 days of measurements at five sites in the tropics and subtropics, obtained from surface moorings equipped to make comprehensive meteorological, incoming solar and infrared radiation, and high-resolution subsurface temperature (and, in some cases, velocity) measurements. The observations, which include surface warmings of up to 3.4°C, are compared with a selection of existing models of the diurnal warm layer (DWL). A simple one-layer physical model is shown to give a reasonable estimate of both the magnitude of diurnal surface warming (model-observation correlation 0.88) and the structure and temporal evolution of the DWL. Novel observations of velocity shear obtained during 346 days at one site, incorporating high-resolution (1 m) upper ocean (5-15 m) acoustic Doppler current profile measurements, are also shown to be in reasonable agreement with estimates from the physical model (daily maximum shear model-observation correlation 0.77). Physics-based improvements to the one-layer model (incorporation of rotation and freshwater terms) are discussed, though they do not provide significant improvements against the observations reported here. The simplicity and limitations of the physical model are used to discuss DWL dynamics. The physical model is shown to give better model performance under the range of forcing conditions experienced across the five sites than the more empirical models. ©2013. American Geophysical Union. All Rights Reserved.

  8. Hydrous ruthenium oxide nanoparticles anchored to graphene and carbon nanotube hybrid foam for supercapacitors.

    Science.gov (United States)

    Wang, Wei; Guo, Shirui; Lee, Ilkeun; Ahmed, Kazi; Zhong, Jiebin; Favors, Zachary; Zaera, Francisco; Ozkan, Mihrimah; Ozkan, Cengiz S

    2014-01-01

    In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the energy density of SCs will have a huge impact on the development of future energy storage devices by broadening the area of application for SCs. Here, we report a simple and scalable way of preparing a three-dimensional (3D) sub-5 nm hydrous ruthenium oxide (RuO2) anchored graphene and CNT hybrid foam (RGM) architecture for high-performance supercapacitor electrodes. This RGM architecture demonstrates a novel graphene foam conformally covered with hybrid networks of RuO2 nanoparticles and anchored CNTs. SCs based on RGM show superior gravimetric and per-area capacitive performance (specific capacitance: 502.78 F g(-1), areal capacitance: 1.11 F cm(-2)) which leads to an exceptionally high energy density of 39.28 Wh kg(-1) and power density of 128.01 kW kg(-1). The electrochemical stability, excellent capacitive performance, and the ease of preparation suggest this RGM system is promising for future energy storage applications. PMID:24663242

  9. Hydrous ruthenium oxide nanoparticles anchored to graphene and carbon nanotube hybrid foam for supercapacitors

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Wei [Univ. of California, Riverside, CA (United States); Guo, S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lee, I. [Univ. of California, Riverside, CA (United States); Ahmed, K. [Univ. of California, Riverside, CA (United States); Zhong, J. [Univ. of California, Riverside, CA (United States); Favors, Z. [Univ. of California, Riverside, CA (United States); Zaera, F. [Univ. of California, Riverside, CA (United States); Ozkan, M. [Univ. of California, Riverside, CA (United States); Ozkan, C. S [Univ. of California, Riverside, CA (United States)

    2014-03-25

    In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the energy density of SCs will have a huge impact on the development of future energy storage devices by broadening the area of application for SCs. Here, we report a simple and scalable way of preparing a three-dimensional (3D) sub-5 nm hydrous ruthenium oxide (RuO₂) anchored graphene and CNT hybrid foam (RGM) architecture for high-performance supercapacitor electrodes. This RGM architecture demonstrates a novel graphene foam conformally covered with hybrid networks of RuO₂ nanoparticles and anchored CNTs. SCs based on RGM show superior gravimetric and per-area capacitive performance (specific capacitance: 502.78 F g⁻¹, areal capacitance: 1.11 F cm⁻²) which leads to an exceptionally high energy density of 39.28 Wh kg⁻¹ and power density of 128.01 kW kg⁻¹. The electrochemical stability, excellent capacitive performance, and the ease of preparation suggest this RGM system is promising for future energy storage applications.

  10. Prediction of load on mooring ropes of a container ship due to the forces induced by a passing bulk carrier

    OpenAIRE

    Varyani, K.S.; Krishnankutty, P.; Vantorre, M.

    2003-01-01

    The hydrodynamic surge and sway forces and yaw moment on a moored ship induced by a anothership moving near and parallel to it are estimated. The results are compared with the values obtained byexperiments carried out in the Towing tank for manoeuvres in shallow water (co-operation Flanders Hydraulics -Ghent University) in Antwerp. Subsequently, equations of motion of the moored ship are solved to determine theloads on the mooring ropes. The effect of underwater form of the ships on the force...

  11. Considerations on the design of through-wall anchors

    International Nuclear Information System (INIS)

    Connections to existing buildings are often the most difficult planning challenge for the realization of construction measures in case of piping system replacements in nuclear power plants. This is due to restricted space or limited load reserves of the building structure. Usually the realization of support connections to the existing buildings is achieved by anchor bolts. But in critical cases the preferred alternative solution uses through-wall anchors. Up to now uniform assessment thresholds are not available, no technical guidelines or regulations for construction variants exist. Through-wall anchors allow significantly higher load capacities for tensile and shear loads but require enhanced planning and realization efforts.

  12. Anchored boundary conditions for locally isostatic networks

    Science.gov (United States)

    Theran, Louis; Nixon, Anthony; Ross, Elissa; Sadjadi, Mahdi; Servatius, Brigitte; Thorpe, M. F.

    2015-11-01

    Finite pieces of locally isostatic networks have a large number of floppy modes because of missing constraints at the surface. Here we show that by imposing suitable boundary conditions at the surface the network can be rendered effectively isostatic. We refer to these as anchored boundary conditions. An important example is formed by a two-dimensional network of corner sharing triangles, which is the focus of this paper. Another way of rendering such networks isostatic is by adding an external wire along which all unpinned vertices can slide (sliding boundary conditions). This approach also allows for the incorporation of boundaries associated with internal holes and complex sample geometries, which are illustrated with examples. The recent synthesis of bilayers of vitreous silica has provided impetus for this work. Experimental results from the imaging of finite pieces at the atomic level need such boundary conditions, if the observed structure is to be computer refined so that the interior atoms have the perception of being in an infinite isostatic environment.

  13. Near-surface salinity and stratification in the north Bay of Bengal from moored observations

    Science.gov (United States)

    Sengupta, Debasis; Bharath Raj, G. N.; Ravichandran, M.; Sree Lekha, J.; Papa, Fabrice

    2016-05-01

    A thin layer of fresh water from summer monsoon rain and river runoff in the Bay of Bengal (BoB) has profound influence on air-sea interaction across the south Asian region, but the mechanisms that sustain the low-salinity layer are as yet unknown. Using the first long time series of high-frequency observations from a mooring in the north BoB and satellite salinity data, we show that fresh water from major rivers is transported by large-scale flow and eddies, and shallow salinity stratification persists from summer through the following winter. The moored observations show frequent 0.2-1.2 psu salinity jumps with time scales of 10 min to days, due to O(1-10) km submesoscale salinity fronts moving past the mooring. In winter, satellite sea surface temperature shows 10 km wide filaments of cool water, in line with moored data. Rapid salinity and temperature changes at the mooring are highly coherent, suggesting slumping of salinity-dominated fronts. Based on these observations, we propose that submesoscale fronts may be one of the important drivers for the persistent fresh layer in the north BoB.

  14. Extreme waves impact on the ship mooring near berth

    Science.gov (United States)

    Leont'ev, Victor; Nudner, Igor; Semenov, Konstantin; Pelinovsky, Efim

    2013-04-01

    Ensuring safe ships berthing and loading-unloading operations at berths need reliable mooring systems. The choice of its parameters corresponds to calculating of the maximum displacements of the boat, which are caused by external impact of extreme waves, winds, and currents. Ship motions are described by system of differential equations, which contain disturbing, inertia, damping, and restoring forces, which magnitude strongly depends on the berth design and configuration of its elements. The major impact on the boat movements is caused by sea waves. In the given paper, an interaction between sea waves and ship located near the berth is studied. The cross-sectional shape of the boat is assumed to be rectangular and under-berth slope profile is approximated by finite number of steps. Different types of berth constructions are taken into account: containing impermeable or partially permeable front vertical wall, wave attenuation camera behind it with or without under-berth slope. The fluid is assumed ideal and incompressible, and its motion is potential. The stated problem is reduced to the determination of the velocity potential that satisfies the Laplace equation; the boundary condition on the free surface; the condition of non-flux through the impermeable bottom, the ship and berth elements; the condition on the surface of the permeable wall that is in proportionality between the wave flow velocity through the wall and pressure drop from its front to back faces. The problem is solved by dividing of the region into sub-domains with conditions of the hydrodynamic pressure and velocity continuity on its boundaries. In each sub-domain the solution is found using Fourier method in the form of functional series with unknown coefficients which are found from the system of linear algebraic equations. Calculated velocity potentials are used to determine different hydrodynamic characteristics of ship motions, such as horizontal and vertical components of disturbing force

  15. Stone anchors from the Okhamandal region, Gujarat Coast, India

    Digital Repository Service at National Institute of Oceanography (India)

    Sundaresh; Gaur, A.S.; Gudigar, P.; Tripati, S.; Vora, K.H.; Bandodkar, S.N.

    Dwarka and Armada yielded a number of stone anchors which suggest that Okhamandal area was major concentration of maritime activities in Saurashtra region in the past. Among these three sites, Bet Dwarka has clear evidence on the settlement of Harappan...

  16. Liquid crystal director fluctuations and surface anchoring by molecular simulation

    OpenAIRE

    Andrienko, D.; Germano, G; Allen, M. P.

    2002-01-01

    We propose a simple and reliable method to measure the liquid crystal surface anchoring strength by molecular simulation. The method is based on the measurement of the long-range fluctuation modes of the director in confined geometry. As an example, molecular simulations of a liquid crystal in slab geometry between parallel walls with homeotropic anchoring have been carried out using the Monte Carlo technique. By studying different slab thicknesses, we are able to calculate separately the pos...

  17. Monetary sterilization and dual nominal anchors: some Caribbean examples

    OpenAIRE

    Khemraj, Tarron; Pasha, Sukrishnalall

    2011-01-01

    This paper notes that a high sterilization coefficient plus a de facto pegged exchange rate indicates the existence of dual nominal anchors. The econometric evidence presented shows that several Caribbean economies with fixed exchange rate regimes also possess high sterilization coefficients. Given open capital accounts in the various economies, the paper argues that this finding contravenes the money neutrality thesis, which holds that only one nominal anchor can prevail in the long-term. Th...

  18. Epidermolysis Bullosa Acquisita: Autoimmunity to Anchoring Fibril Collagen

    OpenAIRE

    Chen, Mei; Kim, Gene H; Prakash, Lori; Woodley, David T.

    2011-01-01

    Epidermolysis bullosa acquisita (EBA) is a rare and acquired autoimmune subepidermal bullous disease of the skin and mucosa. EBA includes various distinct clinical manifestations resembling Bullous Pemphigus, Brunsting-Perry pemphigoid, or cicatricial pemphigoid. These patients have autoantibodies against type VII collagen, an integral component of anchoring fibrils, which are responsible for attaching the dermis to the epidermis. Destruction or perturbation of the normally functioning anchor...

  19. Transosseous Acetabular Labral Repair as an Alternative to Anchors

    OpenAIRE

    Pérez-Carro, Luis; Cabello, Andres Gonzalez; Rakha, Mohamed Ibrahim; Patnaik, Sarthak; Centeno, Elias; Miranda, Victor; Fernández, Ana Alfonso

    2015-01-01

    Labral tears are the most common pathology in patients undergoing hip arthroscopy and the most common cause of mechanical hip symptoms. Labral repair techniques have been described in the literature using suture anchors placed as close as possible to the acetabular rim without penetrating the articular surface. Optimal surgical technique for labral repair is very important, and an inappropriate entry point and guide angulation may lead to intra-articular penetration of the anchor, chondral da...

  20. The Effect of Anchoring Sutures on Medicinal Leech Mortality

    OpenAIRE

    Davila, Victor J.; Hoppe, Ian C.; Landi, Rocco; Ciminello, Frank S.

    2009-01-01

    Objective: The implementation of leech therapy for surgical flaps is not always logistically easy or comfortable for patients or healthcare providers. We examine different methods of placing sutures in the medicinal leech, Hirudo medicinalis, to make the implementation of leech therapy easier. Methods: Sixteen leeches were randomly divided into 3 groups: a control group, a deep anchoring suture group, and a superficial anchoring suture group. The leeches were observed to determine if either o...

  1. Laparoendoscopic single-site simple nephrectomy using a magnetic anchoring system in a porcine model

    Science.gov (United States)

    Choi, Young Hyo; Lee, Hye Won; Lee, Seo Yeon; Han, Deok Hyun; Seo, Seong Il; Jeon, Seong Soo; Lee, Hyun Moo; Choi, Han Yong

    2016-01-01

    Purpose Magnetic anchoring devices may reduce the number of port sites needed in laparoscopic surgery. In this study, we prospectively assessed the feasibility of using a magnetic anchoring and guidance system (MAGS) in laparoendoscopic single-site (LESS) surgery performed by novices. Materials and Methods A total of 10 LESS simple nephrectomies were performed with or without MAGS in a nonsurvival porcine model by 6 operators with no previous LESS surgery experience. After installation of the homemade single port, an intra-abdominal magnet was fixed to the renal parenchyma with suturing and stabilized by an external magnet placed on the flank so that the position of the kidney could be easily changed by moving the external handheld magnet. The length of the procedure and any intraoperative complications were evaluated. Results Operative time (mean±standard deviation) was shorter in the group using the magnetic anchoring device (M-LESS-N) than in the group with conventional LESS nephrectomy (C-LESS-N) (63±20.8 minutes vs. 82±40.7 minutes, respectively). Although all nephrectomies were completed uneventfully in the M-LESS-N group, renal vein injury occurred during dissection of the renal hilum in two cases of C-LESS-N and was resolved by simultaneous transection of the renal artery and vein with an Endo-GIA stapler. Conclusions LESS-N using MAGS is a feasible technique for surgeons with no LESS surgery experience. Taking into account the 2 cases of renal vein injury in the C-LESS-N group, the application of MAGS may be beneficial for overcoming the learning curve of LESS surgery. PMID:27195320

  2. Anchor stud monotonic and cyclic shear tests. Final report

    International Nuclear Information System (INIS)

    In a prestressed concrete reactor vessel (PCRV), the main cavity liner and other cavity liners with large diameter/thickness (D/t) ratios are anchored to the concrete by anchor studs. These anchor studs are subject to shear loading resulting from prestressing, pressurization, temperature, and creep of the PCRV. The test program discussed in this report consists of both monotonic and cyclic testing of models simulating the prototype anchor stud/concrete assembly. The tests determined the shear stiffness characteristics of the 3/4-in.-diameter, one-piece Nelson anchor stud embedded in concrete and established its low-cycle fatigue life under displacement-controlled loading. The previously obtained results of Phase I and Phase II tests on two-piece anchor studs, along with high-cyclic fatigue data taken from the literature, are discussed and are plotted with the current, Phase III, results to form a displacement versus cycles to failure curve covering a useful range of design applications

  3. Evaluation of mitral valve replacement anchoring in a phantom

    Science.gov (United States)

    McLeod, A. Jonathan; Moore, John; Lang, Pencilla; Bainbridge, Dan; Campbell, Gordon; Jones, Doug L.; Guiraudon, Gerard M.; Peters, Terry M.

    2012-02-01

    Conventional mitral valve replacement requires a median sternotomy and cardio-pulmonary bypass with aortic crossclamping and is associated with significant mortality and morbidity which could be reduced by performing the procedure off-pump. Replacing the mitral valve in the closed, off-pump, beating heart requires extensive development and validation of surgical and imaging techniques. Image guidance systems and surgical access for off-pump mitral valve replacement have been previously developed, allowing the prosthetic valve to be safely introduced into the left atrium and inserted into the mitral annulus. The major remaining challenge is to design a method of securely anchoring the prosthetic valve inside the beating heart. The development of anchoring techniques has been hampered by the expense and difficulty in conducting large animal studies. In this paper, we demonstrate how prosthetic valve anchoring may be evaluated in a dynamic phantom. The phantom provides a consistent testing environment where pressure measurements and Doppler ultrasound can be used to monitor and assess the valve anchoring procedures, detecting pararvalvular leak when valve anchoring is inadequate. Minimally invasive anchoring techniques may be directly compared to the current gold standard of valves sutured under direct vision, providing a useful tool for the validation of new surgical instruments.

  4. Anchor Plates in Two-Layered Cohesion Less Soils

    Directory of Open Access Journals (Sweden)

    Hamed Niroumand

    2010-01-01

    Full Text Available Problem statement: During the past few years a great number of experimental model and numerical analysis results on the uplift resistance of anchor plate embedded in homogeneous cohesion less soil has been reported by many researchers. A review of related literature shows that not much research has been done to analyze the performance of anchor plates in layered soils a problem, which is often encountered by the professional engineers in the field. Approach: This study presented the performance of the anchor plates in the cohesion less soil by different researchers. It was based on different previous researches, from the earliest till the most recent ones. The main aim of this research was focused on the prediction of the anchor plates behavior and the force in the layered cohesion less soils. Few laboratory studies were conducted to investigate the uplift capacity behavior of cohesion less soil by previous researchers. Results: The experimental and numerical investigation included uplift test on cohesion less soil by last researchers. The embedment ratio and the effect of density on uplift response were evaluated. This analysis was investigated experimentally and numerically behavior of anchor plates buried in two layered cohesion less soil. Although earlier researchers developed experimentally expressions to estimate the uplift capacity of irregular anchor plates in layered cohesion less soils. Conclusion: The study observed that the ultimate uplift capacity is dependent on the relative strength of the two layers, the depth ratio of embedment and the upper layer thickness ratio.

  5. Deep water pipe, pump, and mooring study: Ocean Thermal Energy Conversion program. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Little, T.E.; Marks, J.D.; Wellman, K.H.

    1976-06-01

    The ocean engineering issues affecting the design, construction, deployment, and operation of Ocean Thermal Energy Conversion (OTEC) power plants are of key importance. This study addressed the problems associated with the conceptual design of the deep-water pipe, cold-water-pumping, and platform mooring arrangements. These subsystems fall into a natural grouping since the parameters affecting their design are closely related to each other and to the ocean environment. Analysis and evaluations are provided with a view toward judging the impact of the various subsystems on the overall plant concept and to provide an estimate of material and construction cost. Parametric data is provided that describes mooring line configurations, mooring line loads, cold water pipe configurations, and cold water pumping schemes. Selected parameters, issues, and evaluation criteria are used to judge the merits of candidate concepts over a range of OTEC plant size from 100 MWe to 1000 MWe net output power.

  6. Data report for current meters on Mooring CMMW-4, 1981; Pacific study area W-N

    International Nuclear Information System (INIS)

    The mooring designated CMMW-4 was installed on cruise W8103A by R/V Wecoma during March, 1981. It was recovered by the same ship 5 months later. All four meters from the mooring were recovered and gave good data. CMMW-4 is the continuation of the central series of W-N moorings (it was preceded by CMMW-1, 2, and 3). The series is designed to determined the long-term mean flow at W-N; and in combination with spatial data from CMMW-5 to 9, it will provide input data for a circulation model of the eastern Pacific. The CMMW-4 results re-establish the net SSE current trends evident in CMMW-1. The eddy-like feature in the CMMW-2 records has moved on. The low-frequency component of the deep meter records is quite coherent, but some shear is evident between 1250 and 3000 meters. 5 references, 54 figures, 1 tables

  7. Conceptual Design of a Floating Support Structure and Mooring System for a Vertical Axis Wind Turbine

    DEFF Research Database (Denmark)

    Berthelsen, Petter Andreas; Fylling, Ivar; Vita, Luca;

    2012-01-01

    This paper deals with the conceptual design of a floating support structure and mooring system for a 5MW vertical axis offshore wind turbine. The work is carried out as part of the DeepWind project, where the main objective is to investigate the feasibility of a floating vertical axis offshore wind...... turbine. The DeepWind concept consists of a Darrieus rotor mounted on a spar buoy support structure. The conceptual design is carried out in an iterative process, involving the different subcomponents. The present work is part of the first design iteration and the objective is to find a feasible floating...... response analysis programs for mooring system forces and vessel motions, and combines this with a gradient search method for solution of nonlinear optimization problems with arbitrary constraints. Two different mooring system configurations are considered: Chain systems with 3 and 6 lines, respectively....

  8. Local Knowledge, About the Use and Management of Natural Resources From El Consuelo's Moor

    Directory of Open Access Journals (Sweden)

    Natalia Espinosa Becerra

    2014-11-01

    Full Text Available The lore biodiversity is associated with the practices of use and management of natural resources. The purpose of this research was to understand the logic of use and management of goods and services received by local actors from El Consuelo's moor, municipality of Cerinza, Boyacá. The study was conducted during 2012 and 2013, and from narrative and ethnographic designs, employing techniques such as semistructured interview,key informant dialogue, participant and nonparticipantobservationand interpretive drawing. It describes six categories of analysis: Moor benefits conceptualization, flora, fauna, soil, water and air. Through the transmission of local knowledge, rural habitants of the moor allocate resources for medicinal, craft, domestic, agricultural and cultural purposes,through management of practices developed in the treatment of common diseases, peasant familiar economy, sowing crop, animal care, and promotion of ecotourism and community outreach activities (distribution of drinking water.

  9. Dynamic analysis of floating wave energy generation system with mooring system

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Gyu Seok; Sohn, Jeong Hyun [Pukyong Nat' l Univ., Busan (Korea, Republic of)

    2013-02-15

    In this study, dynamic behaviors of a wave energy generation system (WEGS) that converts wave energy into electric energy are analyzed using multibody dynamics techniques. Many studies have focused on reducing the effects of a mooring system on the motion of a WEGS. Several kinematic constraints and force elements are employed in the modeling stage. Three dimensional wave load equations are used to implement wave loads. The dynamic behaviors of a WEGS are analyzed under several wave conditions by using MSC/ADAMS, and the rotating speed of the generating shaft is investigated for predicting the electricity capacity. The dynamic behaviors of a WEGS with a mooring system are compared with those of a WEGS without a mooring system. Stability evaluation of a WEGS is carried out through simulation under extreme wave load.

  10. Pyramidal anchor stone from Baga waters of Goa, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.

    . Pyramidal anchor stones have an apex hole which goes up to the round hole, however Goa anchor stone has no such perforation, but, instead has a rectangular cutting on the apex. The anchor stone is compared with Greek pyramidal anchor stones, and probably...

  11. RRS James Cook Cruise JC064, 10 Sep - 09 Oct 2011. RAPID moorings cruise report

    OpenAIRE

    Cunningham, S. A.; et al.

    2012-01-01

    This cruise report covers scientific operations conducted during RRS James Cook Cruise JC064. Cruise JC064, departed from Falmouth on Thursday 1st September 2011 arriving Santa Cruz de Tenerife Saturday 10th September to pick up extra members of the scientific party and arriving again in Santa Cruz on the 9th October. The purpose of the cruise was the refurbishment of an array of moorings on the mid-Atlantic Ridge and off the Moroccan Coast at a nominal latitude of 26.5°N. The moorings are p...

  12. Fatigue Analysis and Design of Mooring Systems. Assessment and comparison of different methods.

    OpenAIRE

    Saidee, Mohammad hasan

    2015-01-01

    This master thesis deals with several problems in connection with the evaluation of fatigue damage for mooring lines. One basic problem is to find out the sea states contributing most to the fatigue loads characterized by the waves height (H_s) and the spectral peak period (T_p). This problem is investigated by designing an intact mooring system and carrying out long term simulations both in frequency domain (FD) and time domain (TD). It is found that sea states with wave heights from 6m to 1...

  13. Volume transport and mixing of the Faroe Bank Channel overflow from one year of moored measurements

    Directory of Open Access Journals (Sweden)

    J. E. Ullgren

    2015-10-01

    Full Text Available One-year long time series of current velocity and temperature from ten moorings deployed in the Faroe Bank Channel (FBC are analysed to describe the structure and variability of the dense overflow plume on daily to seasonal time scales. Mooring arrays are deployed in two sections: located 25 km downstream of the main sill, in the channel that geographically confines the overflow plume at both edges (section C, and 60 km further downstream, over the slope (section S. At section C, the average volume transport of overflow waters (−4 m2 s−1 and (119 ± 43 × 10−4 m2 s−1, respectively.

  14. Instability of a Biaxial Nematic Liquid Crystal Formed by Homeotropic Anchoring on Surface Grooves

    Institute of Scientific and Technical Information of China (English)

    ZHANG Zhi-Dong; XUAN Li

    2011-01-01

    A method used to treat the elastic distortion of a uniaxial nematic liquid crystal induced by homogeneous anchoring on the surface grooves is generalized to biaxial nematic liquid crystals under the homeotropic anchoring condition.Employing some approximations for the elastic constants,we obtain an additional term in the elastic energy per unit area which depends on the angle between the minor director at infinity and the direction of the grooves,with a period of π/2.This leads to instability on the surface grooves so that two states with crossed minor directors are energetically indistinguishable.Our theoretical study explains why the homeotropic alignment method developed for uniaxial liquid crystals loses efficacy for biaxial nematics.In most liquid crystal devices,the liquid crystals are sandwiched between two substrates coated with alignment layers.In the absence of externally applied fields,the orientation of the liquid crystal in the cell is determined by the anchoring condition of the alignment layer.[1-3] One usually distinguishes three main types of liquid crystalline director alignment near solid walls:homeotropic,homogeneous (or planar) and tilted orientations.Here we study the first of these and consider the biaxial nematic phase,which was observed in lyotropic systems as early as 1980[4] and has been confirmed by deuterium NMR spectroscopy.%A method used to treat the elastic distortion of a uniaxial nematic liquid crystal induced by homogeneous anchoring on the surface grooves is generalized to biaxial nematic liquid crystals under the homeotropic anchoring condition. Employing some approximations for the elastic constants, we obtain an additional term in the elastic energy per unit area which depends on the angle between the minor director at infinity and the direction of the grooves, with a period of π/2. This leads to instability on the surface grooves so that two states with crossed minor directors are energetically indistinguishable. Our

  15. Perceptual anchoring in preschool children: not adultlike, but there.

    Directory of Open Access Journals (Sweden)

    Karen Banai

    Full Text Available BACKGROUND: Recent studies suggest that human auditory perception follows a prolonged developmental trajectory, sometimes continuing well into adolescence. Whereas both sensory and cognitive accounts have been proposed, the development of the ability to base current perceptual decisions on prior information, an ability that strongly benefits adult perception, has not been directly explored. Here we ask whether the auditory frequency discrimination of preschool children also improves when given the opportunity to use previously presented standard stimuli as perceptual anchors, and whether the magnitude of this anchoring effect undergoes developmental changes. METHODOLOGY/PRINCIPAL FINDINGS: Frequency discrimination was tested using two adaptive same/different protocols. In one protocol (with-reference, a repeated 1-kHz standard tone was presented repeatedly across trials. In the other (no-reference, no such repetitions occurred. Verbal memory and early reading skills were also evaluated to determine if the pattern of correlations between frequency discrimination, memory and literacy is similar to that previously reported in older children and adults. Preschool children were significantly more sensitive in the with-reference than in the no-reference condition, but the magnitude of this anchoring effect was smaller than that observed in adults. The pattern of correlations among discrimination thresholds, memory and literacy replicated previous reports in older children. CONCLUSIONS/SIGNIFICANCE: The processes allowing the use of context to form perceptual anchors are already functional among preschool children, albeit to a lesser extent than in adults. Nevertheless, immature anchoring cannot fully account for the poorer frequency discrimination abilities of young children. That anchoring is present among the majority of typically developing preschool children suggests that the anchoring deficits observed among individuals with dyslexia represent a

  16. Underwater Application of Quantitative PCR on an Ocean Mooring

    OpenAIRE

    Preston, Christina M.; Harris, Adeline; Ryan, John P.; Roman, Brent; Marin, Roman, III; Jensen, Scott; Everlove, Cheri; Birch, James; Dzenitis, John M; Pargett, Douglas; Adachi, Masao; Turk, Kendra; Zehr, Jonathon P.; Scholin, Christopher A

    2011-01-01

    The Environmental Sample Processor (ESP) is a device that allows for the underwater, autonomous application of DNA and protein probe array technologies as a means to remotely identify and quantify, in situ, marine microorganisms and substances they produce. Here, we added functionality to the ESP through the development and incorporation of a module capable of solid-phase nucleic acid extraction and quantitative PCR (qPCR). Samples collected by the instrument were homogenized in a chaotropic ...

  17. CIRSE Vascular Closure Device Registry

    International Nuclear Information System (INIS)

    Purpose: Vascular closure devices are routinely used after many vascular interventional radiology procedures. However, there have been no major multicenter studies to assess the safety and effectiveness of the routine use of closure devices in interventional radiology. Methods: The CIRSE registry of closure devices with an anchor and a plug started in January 2009 and ended in August 2009. A total of 1,107 patients were included in the registry. Results: Deployment success was 97.2%. Deployment failure specified to access type was 8.8% [95% confidence interval (95% CI) 5.0–14.5] for antegrade access and 1.8% (95% CI 1.1–2.9) for retrograde access (P = 0.001). There was no difference in deployment failure related to local PVD at the access site. Calcification was a reason for deployment failure in only 5.9 cm, and two vessel occlusions. Conclusion: The conclusion of this registry of closure devices with an anchor and a plug is that the use of this device in interventional radiology procedures is safe, with a low incidence of serious access site complications. There seems to be no difference in complications between antegrade and retrograde access and other parameters.

  18. ANATOMY, LIFE HISTORY AND DISTRIBUTION OF THE PARASITIC LEECH OLIGOBDELLA BIANNULATA (MOORE, 1900) (EUHIRUDINEA: GLOSSIPHONIIDAE)

    Science.gov (United States)

    Oligobdella biannulata (Moore, 1900) is a rare, endemic species originally described from a mountain stream near Blowing Rock, North Carolina. Specimens of this species were collected seasonally from fall 1999 to winter 2001 with four new county records in North Carolina (Avery,...

  19. The Impact of a Modified Moore Method on Efficacy and Performance in Precalculus

    Science.gov (United States)

    Cooper, Thomas E.; Bailey, Brad; Briggs, Karen

    2012-01-01

    In this study, one section of undergraduate Precalculus was taught using a modified Moore method, a student centered inquiry-based approach, and two control sections were taught in a traditional lecture format. A survey of attitudes, beliefs, and efficacy toward mathematics and Precalculus was administered at the beginning and end of the semester…

  20. Amsterdam Book Design: Irma Boom, Hansje van Halem, Lesley Moore = Amsterdamskij knižnyj dizajn

    NARCIS (Netherlands)

    M. Lommen

    2012-01-01

    Published on the occasion of the exhibition 'Amsterdam Book Design : Irma Boom, Hansje van Halem, Lesley Moore', from May 26th until June 17th 2012 in the creative platform Taiga Space, Saint Petersburg. In cooperation with Netherlands Institute Saint-Petersburg.

  1. Model Testing of Forces in the Reflector Joint and Mooring Forces on Wave Dragon

    DEFF Research Database (Denmark)

    Gilling, Lasse; Kofoed, Jens Peter; Tedd, James

    This report aims to present the results of a test series analysing the forces in the redesigned reflector joint and the forces in the main mooring link. The resluts presented are intended to be used by WD project partners, for the design and construction of the joint on the prototype Wave Dragon at...

  2. Numerical modeling of a spherical buoy moored by a cable in three dimensions

    Science.gov (United States)

    Zhu, Xiangqian; Yoo, Wan-Suk

    2016-05-01

    Floating facilities have been studied based on the static analysis of mooring cables over the past decades. To analyze the floating system of a spherical buoy moored by a cable with a higher accuracy than before, the dynamics of the cables are considered in the construction of the numerical modeling. The cable modeling is established based on a new element frame through which the hydrodynamic loads are expressed efficiently. The accuracy of the cable modeling is verified with an experiment that is conducted by a catenary chain moving in a water tank. In addition, the modeling of a spherical buoy is established with respect to a spherical coordinate in three dimensions, which can suffers the gravity, the variable buoyancy and Froude-Krylov loads. Finally, the numerical modeling for the system of a spherical buoy moored by a cable is established, and a virtual simulation is proceeded with the X- and Y-directional linear waves and the X-directional current. The comparison with the commercial simulation code ProteusDS indicates that the system is accurately analyzed by the numerical modeling. The tensions within the cable, the motions of the system, and the relationship between the motions and waves are illustrated according to the defined sea state. The dynamics of the cables should be considered in analyzing the floating system of a spherical buoy moored by a cable.

  3. Numerical Modeling of a Spherical Buoy Moored by a Cable in Three Dimensions

    Science.gov (United States)

    Zhu, Xiangqian; Yoo, Wan-Suk

    2016-04-01

    Floating facilities have been studied based on the static analysis of mooring cables over the past decades. To analyze the floating system of a spherical buoy moored by a cable with a higher accuracy than before, the dynamics of the cables are considered in the construction of the numerical modeling. The cable modeling is established based on a new element frame through which the hydrodynamic loads are expressed efficiently. The accuracy of the cable modeling is verified with an experiment that is conducted by a catenary chain moving in a water tank. In addition, the modeling of a spherical buoy is established with respect to a spherical coordinate in three dimensions, which can suffers the gravity, the variable buoyancy and Froude-Krylov loads. Finally, the numerical modeling for the system of a spherical buoy moored by a cable is established, and a virtual simulation is proceeded with the X- and Y-directional linear waves and the X-directional current. The comparison with the commercial simulation code ProteusDS indicates that the system is accurately analyzed by the numerical modeling. The tensions within the cable, the motions of the system, and the relationship between the motions and waves are illustrated according to the defined sea state. The dynamics of the cables should be considered in analyzing the floating system of a spherical buoy moored by a cable.

  4. The Effect of a Modified Moore Method on Attitudes and Beliefs in Precalculus

    Science.gov (United States)

    Bailey, Brad; Cooper, Thomas E.; Briggs, Karen S.

    2012-01-01

    As part of a study on the effects of teaching with a Modified Moore Method (MMM), a survey containing 20 items from Schoenfeld's (1989) investigation of attitudes and beliefs about mathematics was administered to students in undergraduate precalculus classes. The study included one section of precalculus taught with an MMM, a student-centered and…

  5. Comparison and sensitivity investigations of a CALM and SALM type mooring system for wave energy converters

    DEFF Research Database (Denmark)

    Pecher, Arthur; Foglia, Aligi; Kofoed, Jens Peter

    2014-01-01

    and stiffness. The two mooring systems were designed for the same reference load case, corresponding to a horizontal design load at the wave energy converter (WEC) of 2000 kN and a water depth of 30 m. This reference scenario seems to be representative for large WECs operating in intermediate water...

  6. LIFE HISTORY AND DISTRIBUTION OF THE LEECH OLIGOBDELLA BIANNULATA (MOORE, 1900) (EUHIRUDINEA: GLOSSIPHONNIDAE)

    Science.gov (United States)

    Oligobdella biannulata (Moore, 1900) is a rare, endemic leech species originally described from a mountain stream near Blowing Rock, North Carolina. Specimens of O. biannulata were collected seasonally from Fall 1999, to Summer 2002, with new county records in North Carolina and ...

  7. Extreme Loads on the Mooring Lines and Survivability Mode for the Wave Dragon Wave Energy Converter

    DEFF Research Database (Denmark)

    Parmeggiani, Stefano; Kofoed, Jens Peter; Friis-Madsen, E.

    2011-01-01

    the design requirements with almost no added cost. The paper presents the result of the tank testing of a 1:51.8 scale model of a North Sea Wave Dragon in extreme wave conditions of up to 100 years of return period. The results show that the extreme loads in the main mooring line can be reduced by...

  8. 3-D computational method of wave loads on turret moored FPSO tankers

    Institute of Scientific and Technical Information of China (English)

    REN Hui-long; ZHANG Hai-bin; DAI Yu-zhi; SONG Jing-zheng

    2003-01-01

    A three-dimensional method of calculating wave loads of turret moored FPSO (Floating Production Storage and Offloading) tankers is presented. The linearized restoring forces acting on the ship hull by the mooring system are calculated according to the catenary theory, which are expressed as the function of linear stiffness coefficients and the displacements of the upper ends of mooring chains. The hydrodynamic coefficients of the ship are calculated by the three-dimensional potential flow theory of the linear hydrodynamic problem for ships with a low forward speed. The equations of ship motions are established with the effect of the restoring forces from the mooring system included as linear stiffness coefficients. The equations of motions are solved in frequency domain, and the responses of wave-induced motions and loads on the ship can be obtained. A computer program based on this method has been developed,and some calculation examples are illustrated. Analysis results show that the method can give satisfying prediction of wave loads.

  9. Effects of Anchor Bolts Failures in Steam Explosion Analyses

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Seung Hyun; Chang, Yoon-Suk [Kyung Hee University, Yongin (Korea, Republic of); Song, Sungchu; Cho, Yong-Jin [Korea Institute of Nuclear Safety, Daejeon (Korea, Republic of)

    2015-05-15

    Steam explosion may occur in a nuclear power plant by molten core-coolant interactions when the external reactor vessel cooling strategy is failed. This phenomenon can threat the integrity of reactor cavity, penetration piping and support structures. Even though extensive researches have been performed to predict influences of the steam explosion, due to complexity of physical phenomena and environmental thermal hydraulic conditions, it is remained as one of possible hazards. A steam explosion can cause intensive and rapid heat transfer, and lead to the formation of pressure waves and production of missiles that may endanger surrounding reactor cavity wall and associate components due to resulting dynamic effects. The goal of this research is to examine structural integrity of RPV (Reactor Pressure Vessel) support structures and anchor bolts under typical ex-vessel steam explosion conditions through FE analyses. Particularly, influence due to the failure of anchor bolts connecting RPV and support structures was evaluated. In this paper, influence of RPV and support structure due to the anchor bolt failure were evaluated under typical steam explosion conditions and the following conclusions were derived. The highest maximum stresses were calculated at the support structures under the steam explosion condition with the SVF and anchor bolts non-failure. The all stress values did not exceed their yield strengths. The displacements were high under anchor bolt failure conditions. However, the vertical movements of major components were small comparing to the overall dimensions of them.

  10. Use of multi-disciplinary mooring data to extend intermittent OA observations from ship surveys

    Science.gov (United States)

    Send, U.; Ohman, M. D.; Martz, T. R.; Dickson, A. G.; Feely, R. A.; Demer, D.; Washburn, L.

    2012-12-01

    Ship surveys along the US West Coast have provided valuable insight into the conditions and changes in the water column that affect the ocean acidification state. Examples are the decades of CalCOFI sampling off southern California, and the West Coast ship survey published in Feely et al 2008. What is lacking in these observations is a description of the temporal variability of the conditions observed, and of the processes at work that lead to observed conditions or changes. Multi-disciplinary moorings are ideally suited for adding this dimension to the available observations which is critical for an understanding of the OA mechanisms. One example is the occurrence of corrosive water near the seafloor on the continental shelf, which was found in the Feely et al survey. Time series data from a mooring off Del Mar, California, with oxygen and pH sensors near the bottom in 100m depth show the frequency and intensity of corrosive and hypoxic conditions there, and how they relate to physical processes (cross-shelf and along-shelf flow), biological conditions, and climate processes (here La Nina). In the upwelling and open-ocean regimes off Pt. Conception two moorings (CCE1, CCE2) have been collecting data since early 2009 and 2010, respectively, co-located with CalCOFI stations and CCE LTER cardinal sites for ship observations. A glider also routinely passes by these moorings (along CalCOFI line 80). The moorings carry physical, oxygen, pH, pCO2, nutrient, and ecosystem sensors (chlorophyll fluorescence, water column irradiance absorption, acoustic backscatter) and telemeter most data in real-time. The mooring time series show the variability of OA parameters on daily, weekly, seasonal, and interannual time scales, and in the context of the spatial and historical sampling from ships. The multi-disciplinary sensor suite allows to study the forcing of the OA variability on those various time scales, and the impact on the ecosystem. Combined with the spatial information

  11. Hydrostatic Mooring System. Final Technical Report: Main Report plus Appendices A, B, and C - Volume 1 and 2

    Energy Technology Data Exchange (ETDEWEB)

    Jens Korsgaard

    2000-08-08

    The main conclusions from the work carried out under this contract are: An ordinary seafarer can learn by training on a simulator, to moor large tanker vessels to the Hydrostatic Mooring, safely and quickly, in all weather conditions up to storms generating waves with a significant wave height of 8 m. Complete conceptual design of the Hydrostatic Mooring buoy was carried out which proved that the buoy could be constructed entirely from commercially available standard components and materials. The design is robust, and damage resistant. The mooring tests had a 100% success rate from the point of view of the buoy being securely attached and moored to the vessel following every mooring attempt. The tests had an 80% success rate from the point of view of the buoy being adequately centered such that petroleum transfer equipment on the vessel could be attached to the corresponding equipment on the buoy. The results given in Table 3-2 of the mooring tests show a consistently improving performance from test to test by the Captain that performed the mooring operations. This is not surprising, in view of the fact that the Captain had only three days of training on the simulator prior to conducting the tests, that the maneuvering required is non-standard, and the test program itself lasted four days. One conclusion of the test performance is that the Captain was not fully trained at the initiation of the test. It may therefore be concluded that a thoroughly trained navigator would probably be able to make the mooring such that the fluid transfer equipment can be connected with reliability in excess of 90%. Considering that the typical standard buoy has enough power aboard to make eight mooring attempts, this implies that the probability that the mooring attempt should fail because of the inability to connect the fluid transfer equipment is of the order of 10{sup {minus}8}. It may therefore be concluded that the mooring operation between a Hydrostatic Mooring and a large

  12. Importance of the mooring system using in marine radioecology, present and planned studies in our country

    International Nuclear Information System (INIS)

    Nowadays, the most important biomonitor organism is Mediterranean mussel species (Mytilus galloprovincialis) in handled monitoring studies in the marine radioecology content. This bio indicator species is also important both of the national and international monitoring programs. In this sense, Mediterranean and Black Sea mussel monitoring project was carried out with participating many countries which they have bank to Mediterranean and Black Sea by supported CIESM (Commission Internationale pour l'Expolaration Scientiphique de la mer Mediterranee) during the period of 2002-2004. All scientific data collected in a data bank. Furthermore, some new techniques were created for sampling and preparation of samples in monitoring of radionuclides and chemical pollutants by this project. On the other hand, the advantages of active bio monitoring compare to the passive bio monitoring were presented by discussed significance of mooring system.The mussel transplantation is carried out using of mooring systems for two goals. First one of them, available pollutants are to monitor in the absence of the mussel species in the stations by mussel transplantation in those stations. The other one of them, mussels which they are in same length and physiological state are to transplant the mooring systems and to monitor pollutants in mussel living and intended stations. In our country, the first mussel transplantation with established the mooring system was performed at the Oeluedeniz, Antalya, Tasucu, Botas and Arsuz stations. Active monitoring results of the works for radionuclide concentrations were given in this presented paper as well as passive monitoring findings were compared with the results obtained from Black Sea and Marmara Sea stations. Besides, it was presented the aim and content of mooring system that we planned to establish in the Golden Horn in this presentation.

  13. Numerical Modeling of Compliant-Moored System Dynamics with Applications to Marine Energy Converters

    Science.gov (United States)

    Nichol, Tyler

    The development of a numerical model simulating the dynamic response of compliant-moored submerged systems to non-uniform fluid flow is presented. The model is meant to serve as a computational tool with applications to compliant-moored marine energy converters by time-domain representation of the mooring dynamics. The scope of the initial code is restricted to full-submerged moored tidal turbines, though the model can be readily expanded to analyze wave energy converters as well. The system is modeled in a Lagrangian frame treating tidal turbines and structural elements as rigid bodies. Mooring lines are modeled as a series of discrete elastic segments, with parameters and force contributions lumped to point-mass nodes joining each segment. Full-range of motion is achieved using the alpha-beta-gamma Euler Angle method. The governing equations of motion of the system are derived computationally through implementation of Lagrange's Equation of Motion. The techniques employed to develop the symbolic expressions for the total kinetic, potential, and damping energies of the system and the forces acting on each element of the system are discussed. The system of differential equations obtained from evaluation of Lagrange's Equation with the developed symbolic expressions is solved numerically using a built-in MATLAB ordinary differential equation solver called ODE15i.m with the user defined initial condition of the system. Several validation tests are presented and their results discussed. Finally, an explanation of future plans for development of the model and application to existing tidal energy systems are presented.

  14. Optical Fiber Grating Sensor for Force Measurement of Anchor Cable

    Institute of Scientific and Technical Information of China (English)

    JIANG Desheng; FU Jinghua; LIU Shengchun; SUI Lingfeng; FU Rong

    2006-01-01

    The development of the sensor suitable for measuring large load stress to the anchor cable becomes an important task in bridge construction and maintenance. Therefore, a new type of optical fiber sensor was developed in the laboratory - optical fiber grating sensor for force measurement of anchor cable (OFBFMAC). No similar report about this kind of sensor has been found up to now in China and other countries. This sensor is proved to be an effective way of monitoring in processes of anchor cable installation, cable cutting, cable force regulation, etc, with the accurate and repeatable measuring results. Its successful application in the tie bar cable force safety monitoring for Wuhan Qingchuan bridge is a new exploration of optical fiber grating sensing technology in bridge tie bar monitoring system.

  15. Plate anchored stirrup; Pureto teichakugata sendan hokyo tekkin

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, T.; Tanaka, Y.; Nakano, K.; Yamamoto, T. [Taisei Construction Co. Ltd., Tokyo (Japan)

    1998-09-01

    After the Great Hanshin Earthquake, the use of edge form of stirrups of semicircular hook or acute-angled hook which functions sufficiently even after exfoliation of concrete cover is proposed instead of right angle hook. However, when these stirrups are used in plate structures requiring hooks on two ends or in columns as connection reinforcement of hoop, the construction of these stirrups is so complicated that brings higher cost. The authors proposes stirrups to anchor by plate for stirrups of planar members. Anchorage capacity of these plate anchored stirrups and hooks after exfoliation of concrete cover was examined by experiments and the anchorage capacity was confirmed to be larger than that of semicircular hooks. The plate anchored stirrups are effective and easy to construct with low cost. 7 refs., 13 figs., 4 tabs.

  16. Proteomic analysis of GPI-anchored membrane proteins

    DEFF Research Database (Denmark)

    Jung, Hye Ryung; Jensen, Ole Nørregaard

    2006-01-01

    humans. GPI-APs confer important cellular functions as receptors, enzymes and scaffolding molecules. Specific enzymes and detergent extraction methods combined with separation technologies and mass spectrometry permit proteomic analysis of GPI-APs from plasma membrane preparations to reveal cell......Glycosyl-phosphatidyl-inositol-anchored proteins (GPI-APs) represent a subset of post-translationally modified proteins that are tethered to the outer leaflet of the plasma membrane via a C-terminal GPI anchor. GPI-APs are found in a variety of eukaryote species, from pathogenic microorganisms to...

  17. Addition of lipid substituents of mammalian protein glycosylphosphoinositol anchors.

    OpenAIRE

    Singh, N.; Zoeller, R A; Tykocinski, M. L.; Lazarow, P B; Tartakoff, A M

    1994-01-01

    A single metabolic path leading to synthesis of ether lipids is known in animal cells, the major products of which are plasmalogens. To learn whether this peroxisomal path is also responsible for the synthesis of base-resistant lipid components of glycosylphosphoinositol (GPI)-anchored membrane proteins, we have investigated the structure of anchor precursor mannolipids both in wild-type cells (CHO-K1 and a macrophage-like line, RAW 264.7) and in two corresponding mutant cells in which ether ...

  18. Comparison of linear spring and nonlinear FEM methods in dynamic coupled analysis of floating structure and mooring system

    Science.gov (United States)

    Kim, Byoung Wan; Sung, Hong Gun; Kim, Jin Ha; Hong, Sa Young

    2013-10-01

    This paper compares the dynamic coupled behavior of floating structure and mooring system in time domain using two numerical methods for the mooring lines such as the linear spring method and the nonlinear FEM (Finite Element Method). In the linear spring method, hydrodynamic coefficients and forces on the floating body are calculated using BEM (Boundary Element Method) and the time domain equation is derived using convolution. The coupled solution is obtained by simply adding the pre-determined spring constants of the mooring lines into the floating body equation. In FEM, the minimum energy principle is applied to formulate the nonlinear dynamic equation of the mooring system with a discrete numerical model. The ground contact model and Morison formula for drag forces are also included in the formulation. The coupled solution is obtained by iteratively solving the floating body equation and the FEM equation of the mooring system. Two example structures such as weathervane ship and semi-submersible structure are analyzed using linear spring and nonlinear FEM methods and the difference of those two methods are presented. By analyzing the cases with or without surge-pitch or sway-roll coupling stiffness of mooring lines in the linear spring method, the effect of coupling stiffness of the mooring system is also discussed.

  19. An investigation on low frequency fatigue damage of mooring lines applied in a semi-submersible platform

    Science.gov (United States)

    Du, Junfeng; Wang, Shuqing; Chang, Anteng; Li, Huajun

    2016-06-01

    Assessing the fatigue life of mooring systems is important for deep water structures. In this paper, a comprehensive fatigue analysis is conducted on the mooring lines applied in a semi-submersible platform with special focus on the low frequency (LF) fatigue damage. Several influential factors, including water depth, wave spectral parameters, and riser system, are considered. Numerical simulation of a semi-submersible platform with the mooring/riser system is executed under different conditions, and the fatigue damage of mooring lines is assessed by using the time domain analysis method as a benchmark. The effects of these factors on the mooring line tension and the fatigue damage are investigated and discussed in detail. Research results indicate that the LF fatigue damage only accounts for a very small portion of the total damage, although the LF components dominate the global motion response and the mooring line tension of the semi-submersible platform. However, it is demonstrated that the LF fatigue damage is clearly affected by the influential factors. The increase in water depth and spectral peak periods, and the existence of risers can weaken the contribution of the LF components to the mooring line fatigue damage, while the fatigue damage due to the LF components increases with the increase of significant wave height.

  20. [Dactylogyrids (Monogenea: Dactylogyridea) with an unusual number of anchors, their origin and phylogenetic significance. Reference data].

    Science.gov (United States)

    Gerasev, P I

    2002-01-01

    It is considered that in Anacanthorinae, Markewitschiana and Pseudacolpenteron pavlovskii (Dactylogyridae s. s.) the anchors are absent originally. In the other dactylogyrids (s. l.) without anchors (Pseudacolpenteron ignotus; Acolpenteron; Anonchohaptor-Icelanchohaptor; Kritskyia-Telethecium-Pavanelliela) these structures are lost. In related genera Rhinoxenus and Nanotrema the dorsal pair of anchors is transformed into the "spikes"; in Heteronchocleidinae there is one anchor; in Trinigyrus and Schilbetrematoides are two anchors; and in Urogyrus three anchors are reduced. But in Rhinonaster, Cacatyocotyle, Callceostomella, Neocalseostoma elongatum and Pseudodactylogyridae the presence of one pair of ventral "peduncular" or "haptoral" anchors appear to be the original state. For Anacanthorinae and Dactylogyridae s. s. the presence of 18-16 hooks, original lacking of anchors, appearance of one pair of them, evolutionary development and subsequent reduction of these structures are characteristic. In the dactylogyrids (s. l.) having two pairs of anchors and 14 hooks, one pair of the anchors is present originally, then usually the second dorsal pair grows up, and finally, the reduction of a part of anchors or all the anchors is possible. In the 16-hooked dactylogyrids (s. l.) having two pairs of anchors (Tetraonchinea, Amphibdellainea, Neodactylodiscinea) the original lacking or reduction of the anchors is not reported. The author considers, that it is unwarranted to unite all dactylogyrids (s. l.) without anchors into the superorder Ananchorea Malmberg, 1990 or to postulate the original presence of the two pairs of ventral anchors in this group. It is also impossible to unit all dactylogyrids (s. l.) having 0-4 anchors and 18-14 hooks into Dactylogyridae sensu Boeger et Kritsky, 1993. PMID:12070963

  1. SNP Discovery and Chromosome Anchoring Provide the First Physically-Anchored Hexaploid Oat Map and Reveal Synteny with Model Species.

    OpenAIRE

    Rebekah E Oliver; Tinker, Nicholas A.; Lazo, Gerard R.; Shiaoman Chao; Jellen, Eric N.; Martin L. Carson; Rines, Howard W; Donald E Obert; Lutz, Joseph D.; Irene Shackelford; Korol, Abraham B.; Charlene P. Wight; Gardner, Kyle M.; Jiro Hattori; Beattie, Aaron D

    2013-01-01

    A physically anchored consensus map is foundational to modern genomics research; however, construction of such a map in oat (Avena sativa L., 2n = 6x = 42) has been hindered by the size and complexity of the genome, the scarcity of robust molecular markers, and the lack of aneuploid stocks. Resources developed in this study include a modified SNP discovery method for complex genomes, a diverse set of oat SNP markers, and a novel chromosome-deficient SNP anchoring strategy. These resources wer...

  2. 76 FR 10627 - Assumption Buster Workshop: Trust Anchors Are Invulnerable

    Science.gov (United States)

    2011-02-25

    ...) Committee, an interagency working group that coordinates cyber security research activities in support of... confident that they are immune from the attacks.'' This assertion underlies significant cyber security research and development that is aimed at developing and implementing invulnerable trust anchors,...

  3. Localization in Wireless Sensor Networks and Anchor Placement

    Directory of Open Access Journals (Sweden)

    Benjamin Tatham

    2012-06-01

    Full Text Available Applications of wireless sensor network (WSN often expect knowledge of the precise location of the nodes. Many different localization protocols have been proposed that allow nodes to derive their location rather than equipping them with dedicated localization hardware such as GPS receivers, which increases node costs. We provide a brief survey of the major approaches to software-based node localization in WSN. One class of localization protocols with good localization performance patches together relative-coordinate, local maps into a global-coordinate map. These protocols require some nodes that know their absolute coordinates, called anchor nodes. While many factors influence the node position errors, in this class of protocols, using Procrustes Analysis, the placement of the anchor nodes can significantly impact the error. Through simulation, using the Curvilinear Component Analysis (CCA-MAP protocol as a representative protocol in this category, we show the impact of anchor node placement and propose a set of guidelines to ensure the best possible outcome, while using the smallest number of anchor nodes possible.

  4. When Does Scale Anchoring Work? A Case Study

    Science.gov (United States)

    Sinharay, Sandip; Haberman, Shelby J.; Lee, Yi-Hsuan

    2011-01-01

    Providing information to test takers and test score users about the abilities of test takers at different score levels has been a persistent problem in educational and psychological measurement. Scale anchoring, a technique which describes what students at different points on a score scale know and can do, is a tool to provide such information.…

  5. The importance of anchor text for ad hoc search revisited

    NARCIS (Netherlands)

    M. Koolen; J. Kamps

    2010-01-01

    It is generally believed that propagated anchor text is very important for effective Web search as offered by the commercial search engines. "Google Bombs" are a notable illustration of this. However, many years of TREC Web retrieval research failed to establish the effectiveness of link evidence fo

  6. Ten Anchor Points for Teaching Principles of Marketing

    Science.gov (United States)

    Tomkovick, Chuck

    2004-01-01

    Effective marketing instructors commonly share a love for their students, an affinity for the subject matter, and a devotion to continuous quality improvement. The purpose of this article is to highlight 10 anchor points for teaching Principles of Marketing, which are designed to better engage students in the learning process. These anchor…

  7. A+: Adjusted anchored neighborhood regression for fast super-resolution

    OpenAIRE

    Timofte, Radu; De Smet, Vincent; Van Gool, Luc

    2015-01-01

    Timofte R., De Smet V., Van Gool L., ''A+: Adjusted anchored neighborhood regression for fast super-resolution'', Lecture notes in computer science, vol. 9006, part IV, pp. 111-126, 2015 (12th Asian conference on computer vision - ACCV 2014, November 1-5, 2014, Singapore).

  8. Analytical Model for Hook Anchor Pull-Out

    DEFF Research Database (Denmark)

    Brincker, Rune; Ulfkjær, J. P.; Adamsen, P.;

    1995-01-01

    A simple analytical model for the pull-out of a hook anchor is presented. The model is based on a simplified version of the fictitious crack model. It is assume that the fracture process is the pull-off of a cone shaped concrete part, simplifying the problem by assuming pure rigid body motions...

  9. Analytical Model for Hook Anchor Pull-out

    DEFF Research Database (Denmark)

    Brincker, Rune; Ulfkjær, J. P.; Adamsen, P.;

    A simple analytical model for the pull-out of a hook anchor is presented. The model is based on a simplified version of the fictitious crack model. It is assumed that the fracture process is the pull-off of a cone shaped concrete part, simplifying the problem by assuming pure rigid body motions...

  10. Impact of Enhanced Anchored Instruction in Inclusive Math Classrooms

    Science.gov (United States)

    Bottge, Brian A.; Toland, Michael D.; Gassaway, Linda; Butler, Mark; Choo, Sam; Griffen, Ann Katherine; Ma, Xin

    2015-01-01

    The Common Core State Standards for Mathematics will place more pressure on special education and math teachers to raise the skill levels of all students, especially those with disabilities in math (MD). The purpose of this study was to assess the effects of enhanced anchored instruction (EAI) on students with and without MD in co-taught general…

  11. Experience-based, body-anchored qualitative research interviewing

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2010-01-01

    -anchored interviewing, and second, by an interview guide that explores a research participant's personal experience with mindfulness meditation. An excerpt from an interview is discussed to illustrate the advantages of this interview form, namely its value as a methodological instrument for qualitative research in...

  12. Fullerene-based Anchoring Groups for Molecular Electronics

    DEFF Research Database (Denmark)

    Martin, Christian A.; Ding, Dapeng; Sørensen, Jakob Kryger;

    2008-01-01

    We present results on a new fullerene-based anchoring group for molecular electronics. Using lithographic mechanically controllable break junctions in vacuum we have determined the conductance and stability of single-molecule junctions of 1,4-bis(fullero[c]pyrrolidin-1-yl)benzene. The compound can...

  13. Ocean Current Velocity Moored Time-Series Records, collected from moored Acoustic Doppler Current Profilers (ADCP) during 2010 and 2011 in Vieques Sound and Virgin Passage (NODC Accession 0088063)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Nortek 600kHz Aquadopp acoustic current profilers were deployed between March 2010 and April 2011 on shallow water moorings located in Vieques Sound, Puerto Rico,...

  14. Ocean Current Velocity Moored Time-Series Records collected from moored Acoustic Doppler Current Profilers near Grammanik Bank Spawning Aggregation Site (SPAG) and Frenchcap Cay, United States Virgin Islands, from April 24, 2011 to September 25, 2011 (NODC Accession 0088064)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Nortek 600kHz Aquadopp acoustic current profilers were deployed between April 2011 and September 2011 on shallow water moorings located on the coastal shelf south...

  15. REN Miaomiao, SHAO Yong Linear operators preserving Moore-Penrose inverses of matrices over ai-semirings%保持ai-半环上矩阵的Moore-Penrose逆的线性算子

    Institute of Scientific and Technical Information of China (English)

    杨阳; 任苗苗; 邵勇

    2015-01-01

    In this paper it studies invertible linear operators which preserve Moore-Penrose inverse of matrices over ai-semirings, and it is completely characterized that invertible linear operators which preserve Moore-Penrose inverse of matrices over special classes of semirings, including chain semiring, distributive lattice and general Boolean algebras.%研究了保持ai-半环上矩阵的Moore-Penrose逆的可逆线性算子,并完全刻画了保持链半环、完全分配格、n元布尔半环等特殊ai-半环上矩阵 Moore-Penrose逆的可逆线性算子。

  16. Ocean Current Velocity Moored Time-Series Records, collected from moored Acoustic Doppler Current Profilers (ADCP) during 2011 near Grammanik Bank SPAG and Frenchcap Cay, USVI (NODC Accession 0088064)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Nortek 600kHz Aquadopp acoustic current profilers were deployed between April 2011 and September 2011 on shallow water moorings located on the coastal shelf south...

  17. Moore’s Law: The Life of Gordon Moore, Silicon Valley’s Quiet Revolutionary Arnold Thackray, David C. Brock, and Rachel Jones [Book Review

    Energy Technology Data Exchange (ETDEWEB)

    Devanathan, Ram

    2016-05-01

    Five decades ago, Gordon Moore, who would go on to co-found Intel Corporation, made a prescient observation about the exponential advance of semiconductor technology with a corresponding decrease in device cost. His prediction about the pace of doubling of the number of transistors in an integrated circuit came to be known eponymously as Moore’s law and has held true for 50 years. He also foresaw, way back in 1965, the development of home computers, electronic controls in automobiles, portable communications systems, and electronic wrist watches. Moore’s fascinating life, characterized by relentless innovation, charity and breathtaking humility, is the subject of this comprehensive authorized biography. The enthralling narrative is the product of collaboration between an academic (Thackray), a technology historian (Brock) and a journalist (Jones), and draws its material from numerous interviews, Moore’s meticulously maintained notes and professional records, personal papers, industry data, published volumes, and news accounts.

  18. A Single-hole stone anchor from Kottapatnam: Early historic port site of Andhra Pradesh, India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Rao, K.P.; Kumari, S.; Imsong, O.; Vanlalhruaitluangi, V.

    broken piece of polished stone celt in addition to other findings. The recent explorations brought to light a Vijayanagar period coin, pottery and a single hole stone anchor. The finding of the stone anchor throws light on the maritime activities...

  19. Anchoring a Leviathan: How the Nuclear Membrane Tethers the Genome

    Directory of Open Access Journals (Sweden)

    Rafal eCzapiewski

    2016-05-01

    Full Text Available It is well established that the nuclear envelope has many distinct direct connections to chromatin that contribute to genome organization. The functional consequences of genome organization on gene regulation are less clear. Even less understood is how interactions of lamins and nuclear envelope transmembrane proteins (NETs with chromatin can produce anchoring tethers that can withstand the physical forces of and on the genome. Chromosomes are the largest molecules in the cell, making megadalton protein structures like the nuclear pore complexes and ribosomes seem small by comparison. Thus to withstand strong forces from chromosome dynamics an anchoring tether is likely to be much more complex than a single protein-protein or protein-DNA interaction. Here we will briefly review known NE-genome interactions that likely contribute to spatial genome organization, postulate in the context of experimental data how these anchoring tethers contribute to gene regulation, and posit several hypotheses for the physical nature of these tethers that need to be investigated experimentally. Significantly, disruption of these anchoring tethers and the subsequent consequences for gene regulation could explain how mutations in nuclear envelope proteins cause diseases ranging from muscular dystrophy to lipodystrophy to premature ageing progeroid syndromes. The two favored hypotheses for nuclear envelope protein involvement in disease are 1 weakening nuclear and cellular mechanical stability, and 2 disrupting genome organization and gene regulation. Considerable experimental support has been obtained for both. The integration of both mechanical and gene expression defects in the disruption of anchoring tethers could provide a unifying hypothesis consistent with both.

  20. Characterizing the flow of stirred vessels with anchor type impellers

    Directory of Open Access Journals (Sweden)

    Peixoto S.M.C.

    2000-01-01

    Full Text Available Despite its importance in chemical industries, there are few works which studies anchor type impellers and only a fraction of the works investigate these systems under a computational approach. The great majority refers to turbine impellers, specially Rushton turbines, under turbulent flow. Anchor impellers are used specially for highly viscous flow, typical of polymer reactions. The viscosity is normally in the range 1000-10000 cp. Since this range of viscosity describe highly viscous flows, the reactions for anchor agitated systems are normally carried out under laminar flow. This work presents a detailed computational fluid dynamics (CFD approach to study the behaviour of stirred vessels using anchor impellers. The axial plane of the tank, which is being modelled, is divided into small control volumes, which collectively is referred to as the mesh, or grid. In each of these cells the momentum balance, energy and mass conservation, which describes the model, are rewritten algebraically using the finite volumes method to relate such variables as velocity, pressure and temperature to values in neighbouring cells. The equations are then solved numerically, and the results yield the flow corresponding to the model. Since the geometry of a vessel with anchor impellers strictly calls for a three dimensional method, an approximation is made to account for the effect of the blades (Kuncewics, 1992. The main objective of this work is to give a detailed description of the flow generated by this axial impeller with a view to indicate ways in which the design and operation of these systems can be improved.

  1. Diel vertical migration of zooplankton at the S1 biogeochemical mooring revealed from acoustic backscattering strength

    Science.gov (United States)

    Inoue, Ryuichiro; Kitamura, Minoru; Fujiki, Tetsuichi

    2016-02-01

    We examined the diel vertical migration of zooplankton by using the backscatter strength obtained from moored acoustic Doppler current profilers at mooring site S1 in the North Pacific subtropical gyre. There was seasonal variability in the vertical distribution and migration of the high-backscatter layers in that they became deeper than the euphotic zone (zooplankton near the surface by changing the light intensity. Physical events, such as mixed-layer deepening and restratification and the passage of a mesoscale eddy, also affected zooplankton behavior possibly by changing food environment in the euphotic zone. Since the comparison with net samples indicated that the backscatter likely represents the bulk biomass, the accuracy of biomass estimates based on net samples could be influenced by the high temporal variability of zooplankton distributions.

  2. Optimized Mooring Line Simulation Using a Hybrid Method Time Domain Scheme

    DEFF Research Database (Denmark)

    Christiansen, Niels Hørbye; Voie, Per Erlend Torbergsen; Høgsberg, Jan;

    2014-01-01

    Dynamic analyses of slender marine structures are computationally expensive. Recently it has been shown how a hybrid method which combines FEM models and artificial neural networks (ANN) can be used to reduce the computation time spend on the time domain simulations associated with fatigue analysis...... of the ANN are based on one short time domain simulation sequence generated by a FEM model of the structure. This means that it is possible to evaluate the importance of input parameters based on this single simulation only. The method is tested on a numerical model of mooring lines on a floating offshore...... of mooring lines by two orders of magnitude. The present study shows how an ANN trained to perform nonlinear dynamic response simulation can be optimized using a method known as optimal brain damage (OBD) and thereby be used to rank the importance of all analysis input. Both the training and the optimization...

  3. Sea wave impact on a ship moored at the berth with a stilling pool

    Directory of Open Access Journals (Sweden)

    K.K. Semenov

    2015-04-01

    Full Text Available When designing berths and ship mooring systems near berths, it is necessary to protect ships from dangerous displacements. To make a well-reasoned choice, it is necessary to make estimates of the characteristics of sea wave impact on the ship (with respect to the steady-wave mode in the waters. The results of numeric calculations are better suited for engineering purposes. This paper presents a mathematical model to estimate hydrodynamic characteristics of wave impact on the ship moored at the berth with a stilling pool. To derive this mathematical model, the analytical method using eigenfunction expansion was employed. Also, the article shows the calculation data to demonstrate the influence of berth characteristics on loads experienced by the ship.

  4. Moore's law and the impact on trusted and radiation-hardened microelectronics.

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Kwok Kee

    2011-12-01

    In 1965 Gordon Moore wrote an article claiming that integrated circuit density would scale exponentially. His prediction has remained valid for more than four decades. Integrated circuits have changed all aspects of everyday life. They are also the 'heart and soul' of modern systems for defense, national infrastructure, and intelligence applications. The United States government needs an assured and trusted microelectronics supply for military systems. However, migration of microelectronics design and manufacturing from the United States to other countries in recent years has placed the supply of trusted microelectronics in jeopardy. Prevailing wisdom dictates that it is necessary to use microelectronics fabricated in a state-of-the-art technology for highest performance and military system superiority. Close examination of silicon microelectronics technology evolution and Moore's Law reveals that this prevailing wisdom is not necessarily true. This presents the US government the possibility of a totally new approach to acquire trusted microelectronics.

  5. Effects of Damping Plate and Taut Line System on Mooring Stability of Small Wave Energy Converter

    Directory of Open Access Journals (Sweden)

    Zhen Liu

    2015-01-01

    Full Text Available Ocean wave energy can be used for electricity supply to ocean data acquisition buoys. A heaving buoy wave energy converter is designed and the damping plate and taut line system are used to provide the mooring stability for better operating conditions. The potential flow assumption is employed for wave generation and fluid structure interactions, which are processed by the commercial software AQWA. Effects of damping plate diameter and taut line linking style with clump and seabed weights on reduction of displacements in 6 degrees of freedom are numerically studied under different operating wave conditions. Tensile forces on taut lines of optimized mooring system are tested to satisfy the national code for wire rope utilization.

  6. Mooring design to minimize savonius rotor overspeeding due to wave action

    Science.gov (United States)

    Griffin, David A.

    1988-02-01

    A theoretical formula providing an estimate of the surface wave induced overspeeding of non-vector-averaging recording current meters is derived for shallow water (continental shelf) single meter moorings having subsurface buoyancy directly above the meter. It is shown that the common practice of placing meters close to the bottom in an attempt to escape wave action can result in greater overspeeding, even though the wave induced currents are weaker at depth. In cases where a variety of meters are available to be used at various depths, it is therefore recommended that the newer vector-averaging meters be used near the bottom as well as near the surface, with non-vector-averaging meters being used only at mid-depth on moorings whose uppermost buoyancy is also at mid-depth.

  7. Objective measures of laryngeal imaging: what have we learned since Dr. Paul Moore.

    Science.gov (United States)

    Woo, Peak

    2014-01-01

    Dr. Paul Moore pioneered the use of high-speed cinematography for observation of normal and abnormal vocal fold vibrations during phonation. His analysis of the glottal area waveform, opening and closing speed index, and open quotient from the high-speed films were labor intensive but relevant today. With advances in digital image capture and automated image extraction techniques, stroboscopy and high-speed images of vocal fold vibration may be analyzed with objective measures. Digital high-speed image capture in color is now clinically practical at high resolution. Digital kymography now allows analysis of the vibratory waveform from each vocal fold. Serial capture and comparison can document changes in vibratory function with treatment. Quantification of vocal fold vibration using such techniques is now practical. This is a review of vocal fold vibration capture and analysis techniques since Dr. Moore. PMID:24094798

  8. An Investigation to Determine the Career Anchors Which Affect the Career Decision of Tourism Students

    OpenAIRE

    GEZEN, Tuba; Köroğlu, Özlem

    2014-01-01

    AbstractAlthough career anchors are used as a career tool in organizations, are examined in many limited researches. The purpose of this study is to determine the career anchors which affect the job and career decision of the tourism students. Therefore, Tourism and Hotel Management students who attend four-year programs/departments of Balikesir University have been conducted surveys. The Career Anchors Scale developed by Schein (1990) has been used to determine the career anchors of the tour...

  9. Cement grouting during installation of ground anchors in non-cohesive soils

    OpenAIRE

    Domes, Xenia A. L.

    2015-01-01

    Pressure grouting during installation of grouted ground anchors is known to increase anchor capacity in non-cohesive soils, but little information is available on correlations between applied grouting pressures, duration of grouting, ground conditions and increase of anchor pull-out capacity. The presented PhD study is concerned with processes taking place during installation of grouted ground anchors in non-cohesive soils, where filtration of the cement grout is assumed. It...

  10. Saipan 2005 Sea Surface Temperature and Meteorological Enhanced Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site Saipan, CNMI (15.2375N, 145.72283W) ARGOS Buoy ID 26105 Time series data from this mooring provide high resolution sea surface temperature, and surface...

  11. Kure Atoll, NWHI, 2004 Sea Surface Temperature and Meterological Standard Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site - Kure Atoll, NW Hawaiian Islands (28.41858, -178.34333 ) ARGOS ID 21392 Time series data from this mooring provide high resolution sea surface temperature,...

  12. Temperature measurements from a moored thermistor chain in Mamala Bay, Oahu, Hawaii during 1997-1998 (NODC Accession 0000625)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A moored thermistor chain was deployed about a mile south of Honolulu Harbor in waters of about 260 feet depth. The instrument was in operation from August 1997 -...

  13. Palmyra Atoll, 2006 Sea Surface Temperature and Meteorological Enhanced Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site Palmyra Atoll, (5.88467, -162.10281 ) ARGOS ID 307-001. Time series data from this mooring provide high resolution sea surface temperature and conductivity,...

  14. Offshore offloading of CO₂: Review of single point mooring types and suitability

    OpenAIRE

    Brownsort, Peter

    2015-01-01

    There are many types of single point mooring (SPM) and loading systems that have been developed in the offshore Oil and Gas sector for the transfer of hydrocarbon and other fluids from production wells, platforms or floating storages to tankers. Several of them can probably be adapted for transfer, in the opposite direction, of carbon dioxide (CO2) transported by ship as a refrigerated liquid, to injection wells for enhanced oil recovery (EOR) or geological storage. However, no clearly favour...

  15. First records of Acizzia jamatonica (Kuwayama) and Glycaspis brimblecombei Moore, (Hemiptera: Psyllidae, Aphalaridae) in Montenegro

    OpenAIRE

    MALUMPHY, CHRIS; Perović, Tatjana; HRNČIĆ, SNJEŽANA; RADONJIĆ, SANJA; Raičević, Milorad

    2013-01-01

    Albizia psyllid, Acizzia jamatonica (Kuwayama), and red gum lerp psyllid, Glycaspis brimblecombei Moore, were found in Montenegro for the first time during 2009 and 2012 respectively. Acizzia jamatonica is native to East Asia, and has spread rapidly in Europe since it was first reported from Italy in 2002. It was first collected from Albizzia julibrissin in Podgorica, September 2009, and subsequently from Albizzia sp. and A. julibrissin in Herceg Novi, October 2010, and June and October 2012,...

  16. Numerical studies on wave forces and moored ship motions in intermediate and shallow water

    OpenAIRE

    You, Jikun

    2012-01-01

    Wave forces and motions of a moored ship in intermediate and shallow water depth are investigated numerically in the present thesis. The studies are carried out in the framework of potential flow theory. Three numerical models, which include a 2D and 3D fully nonlinear numerical wave tank (FNWT), a second-order perturbation method and a coupled Boussinesqpanel model, are developed and verified by available theoretical and experimental results.In the FNWT, numerical issues like accurate tracki...

  17. A Robust Self-Alignment Method for Ship's Strapdown INS Under Mooring Conditions

    OpenAIRE

    Tong Cao; Guangtao Zhou; Naser El-Sheimy; Chunyang Yu; Haiyu Lan; Feng Sun; Hang Liu

    2013-01-01

    Strapdown inertial navigation systems (INS) need an alignment process to determine the initial attitude matrix between the body frame and the navigation frame. The conventional alignment process is to compute the initial attitude matrix using the gravity and Earth rotational rate measurements. However, under mooring conditions, the inertial measurement unit (IMU) employed in a ship’s strapdown INS often suffers from both the intrinsic sensor noise components and the external disturbance compo...

  18. "An Act of Social Magic": Class, Gender and Modernity in Alan Moore's From Hell

    OpenAIRE

    Masserano, Erica

    2011-01-01

    Loosely based on the Ripper murders in 1880s London, the graphic novel From Hell, written by Alan Moore and illustrated by David Gibbons, portrays the Victorian age as a site of class and gender struggle through the juxtaposition of two liminal opposites: the lower-class, female prostitute and the upper-class, male Freemason. This dissertation examines the interplay between the two character types through a socio-cultural analysis that spaces from Victorian ideology, to the condition of the u...

  19. A group of 20 stone anchors from the waters of Dwarka, on the Gujarat Coast, India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A; Sundaresh; Tripati, S.; Gudigar, P.; Vora, K.H.; Bandodkar, S.N.

    A large number of stone anchors were discovered in a water depth of 10-14 m off Dwarka during the 1998-99 season. The seabed near the anchors consists of a ledge with an average height of 1 m. Several anchors were found trapped between the rocks...

  20. 33 CFR 401.83 - Reporting position at anchor, wharf, etc.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Reporting position at anchor, wharf, etc. 401.83 Section 401.83 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT... § 401.83 Reporting position at anchor, wharf, etc. A vessel anchoring in a designated anchorage area,...

  1. Biomimetic Mussel Adhesive Inspired Clickable Anchors Applied to the Functionalization of Fe3O4 Nanoparticles

    NARCIS (Netherlands)

    Goldmann, Anja S.; Schoedel, Christine; Walther, Andreas; Yuan, Jiayin; Loos, Katja; Mueller, Axel H. E.; Müller, Axel H.E.

    2010-01-01

    The functionalization of magnetite (Fe3O4) nanoparticles with dopamine-derived clickable biomimetic anchors is reported. Herein, an alkyne-modified catechol-derivative is employed as the anchor, as i) the catechol-functional anchor groups possess irreversible covalent binding affinity to Fe3O4 nanop

  2. Research on Port Food Transportation Port Food Transportation Mooring Load Prediction through Theoretical Calculation Model with the Wavelet Analysis

    OpenAIRE

    Zheng Jian; Xiao Ying-Jie; Zhang Hao

    2015-01-01

    In order to achieve the short-term and high-precision port food transportation port food transportation mooring load prediction, a new principle and method of ship’s port food transportation port food transportation mooring load measurements based on indirect measurement is presented in this study and an algorithm is proposed through which predictions are made by comb the wavelet multi-scale decomposition and reconstruction method. Simulation results show that the combined algorithm has achie...

  3. The Effect of Additional Mooring Chains on the Motion Performance of a Floating Wind Turbine with a Tension Leg Platform

    OpenAIRE

    Jinping Ou; Nianxin Ren; Yugang Li

    2012-01-01

    In this study, two types of floating offshore wind turbine (FOWT) systems were proposed: a traditional tension leg platform (TLP) type and a new TLP type with additional mooring chains. They were both based on the National Renewable Energy Laboratory 5 MW offshore wind turbine model. Taking the coupled effect of dynamic response of the top wind turbine, tower support structure and lower mooring system into consideration, not only were the 1/60 scale model tests for the two floating wind turbi...

  4. Fatigue Life Prediction of Mooring Chains for a Floating Tidal Current Power Station

    Institute of Scientific and Technical Information of China (English)

    Fengmei Jing; Liang Zhang; Zhong Yang

    2012-01-01

    As a kind of clean and renewable energy,tidal current energy is becoming increasingly popular all over the world with the shortage of energy and environmental problems becoming more and more severe.A floating tidal current power station is a typical type of tidal current power transformers which can sustain the loads of wind,waves,and current,and even the extreme situation of a typhoon.Therefore,the mooring system must be reliable enough to keep the station operating normally and to survive in extreme situations.The power station examined in this paper was installed at a depth of 40 m.A 44 mm-diameter R4-RQ4 chain was chosen,with a 2 147 kN minimum break strength and 50 kN pretension.Common studless link chain was used in this paper.Based on the Miner fatigue cumulative damage rule,S-N curves of chains,and MOSES software,a highly reliable mooring system was designed and analyzed.The calculation results show that the mooring system designed is reliable throughout a 10-year period.It can completely meet the design requirements of American Petroleum institution (API).Therefore,the presented research is significant for advancing the design of this kind of power station.

  5. Simultaneously Dissipative Operators And The Infinitesimal Moore Effect In Interval Spaces

    CERN Document Server

    Gorban, A N; Verbitskii, V I; Shokin, Yu.I.

    1997-01-01

    In solving a system of ordinary differential equations by an interval method the approximate solution at any considered moment of time $t$ represents a set (called interval) containing the exact solution at the moment $t$. The intervals determining the solution of a system are often expanded in the course of time irrespective of the method and step used. The phenomenon of interval expansion, called the Moore sweep effect, essentially decreases the efficiency of interval methods. In the present work the notions of the interval and the Moore effect are formalized and the Infinitesimal Moore Effect (IME) is studied for autonomous systems on positively invariant convex compact. With IME the intervals expand along any trajectory for any small step, and that means that when solving a system by a stepwise interval numerical method with any small step the interval expansion takes place for any initial data irrespective of the applied method. The local conditions of absence of IME in terms of Jacobi matrices field of ...

  6. Phytoplankton production in the Sargasso Sea as determined using optical mooring data

    Science.gov (United States)

    Waters, K. J.; Smith, R. C.; Marra, J.

    1994-01-01

    Optical measurements from an untended mooring provide high-frequency observations of in-water optical properties and permit the estimation of important biological parameters continuously as a function of time. A 9-month time series, composed of three separate deployments, of optical data from the BIOWATT 1987 deep-sea mooring located in the oligotrophic waters of the Sargasso Sea at 34 deg N, 70 deg W are presented. These data have been tested using several bio-optical models for the purpose of providing a continuous estimate of phytoplankton productivity. The data are discussed in the context of contemporaneous shipboard observations and for future ocean color satellite observations. We present a continuous estimation of phytoplankton productivity for the 9-month time series. Results from the first 70-day deployment are emphasized to demonstrate the utility of optical observations as proxy measures of biological parameters, to present preliminary analysis, and to compare our bio-optical observations with concurrent physical observations. The bio-optical features show variation in response to physical forcings including diel variations of incident solar irradiance, episodic changes corresponding to wind forcing, variability caused by advective mesoscale eddy events in the vicinity of the mooring, and seasonal variability corresponding to changes in solar radiation, shoaling of the mixed layer depth, and succession of phytoplankton populations.

  7. A robust self-alignment method for ship's strapdown INS under mooring conditions.

    Science.gov (United States)

    Sun, Feng; Lan, Haiyu; Yu, Chunyang; El-Sheimy, Naser; Zhou, Guangtao; Cao, Tong; Liu, Hang

    2013-01-01

    Strapdown inertial navigation systems (INS) need an alignment process to determine the initial attitude matrix between the body frame and the navigation frame. The conventional alignment process is to compute the initial attitude matrix using the gravity and Earth rotational rate measurements. However, under mooring conditions, the inertial measurement unit (IMU) employed in a ship's strapdown INS often suffers from both the intrinsic sensor noise components and the external disturbance components caused by the motions of the sea waves and wind waves, so a rapid and precise alignment of a ship's strapdown INS without any auxiliary information is hard to achieve. A robust solution is given in this paper to solve this problem. The inertial frame based alignment method is utilized to adapt the mooring condition, most of the periodical low-frequency external disturbance components could be removed by the mathematical integration and averaging characteristic of this method. A novel prefilter named hidden Markov model based Kalman filter (HMM-KF) is proposed to remove the relatively high-frequency error components. Different from the digital filters, the HMM-KF barely cause time-delay problem. The turntable, mooring and sea experiments favorably validate the rapidness and accuracy of the proposed self-alignment method and the good de-noising performance of HMM-KF. PMID:23799492

  8. An In Vitro Study of the Antimicrobial Effects of Indigo Naturalis Prepared from Strobilanthes formosanus Moore

    Directory of Open Access Journals (Sweden)

    Yin-Ru Chiang

    2013-11-01

    Full Text Available Indigo naturalis is effective in treating nail psoriasis coexisting with microorganism infections. This study examines the antimicrobial effects of indigo naturalis prepared from Strobilanthes formosanus Moore. Eight bacterial and seven fungal strains were assayed using the agar diffusion method to examine the effects of indigo naturalis and its bioactive compounds. The bioactive compounds of indigo naturalis were purified sequentially using GFC, TLC, and HPLC. Their structures were identified using mass spectrometry and NMR spectroscopy. UPLC-MS/MS was applied to compare the metabolome profiles of indigo naturalis ethyl-acetate (EA extract and its source plant, Strobilanthes formosanus Moore. The results of in vitro antimicrobial assays showed that indigo naturalis EA-extract significantly (≥1 mg/disc inhibits Gram-positive bacteria (Staphylococcus aureus, S. epidermis and methicillin-resistant S. aureus (MRSA and mildly inhibits non-dermatophytic onychomycosis pathogens (Aspergillus fumigates and Candida albicans, but has little effect on dermatophyes. Isatin and tryptanthrin were identified as the bioactive compounds of indigo naturalis using S. aureus and S. epidermis as the bioassay model. Both bioactive ingredients had no effect on all tested fungi. In summary, indigo naturalis prepared from Strobilanthes formosanus Moore exhibits antimicrobial effects on Staphylococcus and non-dermatophytic onychomycosis pathogens. Tryptanthrin and isatin may be its major bioactive ingredients against Staphylococcus and the inhibitory effect on MRSA may be due to other unidentified ingredients.

  9. An in vitro study of the antimicrobial effects of indigo naturalis prepared from Strobilanthes formosanus Moore.

    Science.gov (United States)

    Chiang, Yin-Ru; Li, Ann; Leu, Yann-Lii; Fang, Jia-You; Lin, Yin-Ku

    2013-01-01

    Indigo naturalis is effective in treating nail psoriasis coexisting with microorganism infections. This study examines the antimicrobial effects of indigo naturalis prepared from Strobilanthes formosanus Moore. Eight bacterial and seven fungal strains were assayed using the agar diffusion method to examine the effects of indigo naturalis and its bioactive compounds. The bioactive compounds of indigo naturalis were purified sequentially using GFC, TLC, and HPLC. Their structures were identified using mass spectrometry and NMR spectroscopy. UPLC-MS/MS was applied to compare the metabolome profiles of indigo naturalis ethyl-acetate (EA) extract and its source plant, Strobilanthes formosanus Moore. The results of in vitro antimicrobial assays showed that indigo naturalis EA-extract significantly (≥1 mg/disc) inhibits Gram-positive bacteria (Staphylococcus aureus, S. epidermis and methicillin-resistant S. aureus (MRSA)) and mildly inhibits non-dermatophytic onychomycosis pathogens (Aspergillus fumigates and Candida albicans), but has little effect on dermatophyes. Isatin and tryptanthrin were identified as the bioactive compounds of indigo naturalis using S. aureus and S. epidermis as the bioassay model. Both bioactive ingredients had no effect on all tested fungi. In summary, indigo naturalis prepared from Strobilanthes formosanus Moore exhibits antimicrobial effects on Staphylococcus and non-dermatophytic onychomycosis pathogens. Tryptanthrin and isatin may be its major bioactive ingredients against Staphylococcus and the inhibitory effect on MRSA may be due to other unidentified ingredients. PMID:24284490

  10. Moored current meter data from the Madeira Abyssal Plain (GME). 1. deployment (1984)

    International Nuclear Information System (INIS)

    Near bottom current have been measured at three closely spaced sites in the N.E. Atlantic for 13 months. Locations were selected in the Great Meteor East study site area, near 310 30'N 250W, one on the abyssal plain, one on top of a small abyssal hill about 400 m high and one on its flank just above the plain. Current meters were moored 10, 100, and 1000 m above the local bottom (5438 m, 5398 m and 4999 m) in January 1984 and recovered in February 1985. This report displays the characteristics of the currents in numerous tables and figures. In the mean they ar found to be very weak and though adjacent moorings are separated by only 12 km and 27 km the year-long current directions differ radically. Current variations are principally due to semi-diurnal tides, inertial oscillations and eddies the latter of which migrate over the moorings. The tidal energy meets expectations as does the eddy energy with magnitude 2-3 cm2 s-2. Horizontal (isopycnal) diffusivity is estimated as about 2x102 m2 s-1. Currents 10 m above the bottom exceed 10 cm/s least frequently on the plain and most frequently at the hill-foot. The influence of the hill is surprisingly large. At all three sites the strongest currents are found near the sea bed. Speeds also show a Weibull distribution and rough 50 year return currents are inferred. (author)

  11. An analysis of mooring accidents on the Polish Ocean Lines ships in 1975-80. Preventive recommendations.

    Science.gov (United States)

    Dankiewicz-Sznajder, J

    1983-01-01

    The aim of the presented research was: 1. to analyse the causes and effects of accidents that occurred on the Polish Ocean Lines ships in 1975-1980 at mooring manoeuvres. 2. Issuing certain prophylactic recommendations. The material of the research was information contained in the 95 accident record cards and in other post-accident documents such as rulings of the Marine Chamber, situational sketches of the place of accident and determination of circumstances and causes of accidents. The obtained data showed, among others, that c. 81 per cent of the mooring accidents occurred at the bow manoeuvre station and 19 per cent--at the stern manoeuvre station. The most frequent cause of injures which appeared in mooring accidents (23.3 per cent) was hitting by the mooring line as result of "bouncing" on the mooring winch head. The most frequent injury was that of lower extremities (32.6 per cent) and upper extremities (30.5 per cent) and the most widespread injuries in those accidents were--contusion (43.16 per cent) and fracture (29.48 per cent of accidents. The analysis of the material allows to state that a smaller risk of accidents occurring at mooring may be achieved through the introduction of some prophylactic recommendations both in the sphere of organisation and technology. PMID:6681361

  12. An in-vitro study of rotator cuff tear and repair kinematics using single- and double-row suture anchor fixation

    Directory of Open Access Journals (Sweden)

    Angela E Kedgley

    2013-01-01

    Full Text Available Purpose: Double-row suture anchor fixation of the rotator cuff was developed to reduce repair failure rates. The purpose of this study was to determine the effects of simulated rotator cuff tears and subsequent repairs using single- and double-row suture anchor fixation on three-dimensional shoulder kinematics. It was hypothesized that both single- and double-row repairs would be effective in restoring active intact kinematics of the shoulder. Materials and Methods: Sixteen fresh-frozen cadaveric shoulder specimens (eight matched pairs were tested using a custom loading apparatus designed to simulate unconstrained motion of the shoulder. In each specimen, the rotator cuff was sectioned to create a medium-sized (2 cm tear. Within each pair, one specimen was randomized to a single-row suture anchor repair, while the contralateral side underwent a double-row suture anchor repair. Joint kinematics were recorded for intact, torn, and repaired scenarios using an electromagnetic tracking device. Results: Active kinematics confirmed that a medium-sized rotator cuff tear affected glenohumeral kinematics when compared to the intact state. Single- and double-row suture anchor repairs restored the kinematics of the intact specimen. Conclusions: This study illustrates the effects of medium-sized rotator cuff tears and their repairs on active glenohumeral kinematics. No significant difference ( P ≥ 0.10 was found between the kinematics of single- and double-row techniques in medium-sized rotator cuff repairs. Clinical Relevance: Determining the relative effects of single- and double-row suture anchor repairs of the rotator cuff will allow physicians to be better equipped to treat patients with rotator cuff disease.

  13. Modeling and Simulation of Marine Hydrokinetic Devices

    Science.gov (United States)

    Shoele, K.; Previsic, M.

    2012-12-01

    To accurately design a wave energy conversion system, the time domain numerical model is necessary. This is due to nonlinearities in the system from different sources such as hydrodynamic forces, device dynamics, control mechanisms, and mooring lines. Combining model accuracy with efficient and fast calculation of hydrodynamic forces in time domain is challenging and time-consuming. This article describes an easy to use and unified computational framework that handles those challenges efficiently for different types of wave energy converters. The framework has been generated as a Matlab toolbox that contains the key components of a wave to wire model. It can be used for initial performance evaluation of wave energy converters as well as detailed nonlinear analysis in the time domain. The preprocessing, post-processing, and standard modeling procedure are among the unique capabilities of the toolbox that enable users to check different device concepts and optimize device performance without dealing with modeling troubles. The hydrodynamic parameters are initially computed using the three-dimensional panel method and transformed to time domain by systematic identification techniques to accelerate computation of the hydrodynamic radiation forces. The dynamics of the whole system including nonlinear viscous forces, multi-body dynamics, mooring lines, and power takeoff units is then modeled in Matlab Simulink interface. Validation of the model with experimental studies is described and the responses of different wave energy conversion systems, especially their converted power, are presented.

  14. Iron anchors of Northern Odisha, east coast India: Maritime contacts with European countries

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Patnaik, S.K.; Acharya, S.B.

    at Siraf. Second Interim Report. Iran 8: 1–17. 12    List of Figures Figure 1. Iron anchor find sites, ports and trade centres of Odisha. Figure 2. Iron anchor found at Balaramgadi, Northern Odisha (Photo: Sila Tripati) Figure 2a. Iron anchor found... at Balaramgadi, Northern Odisha (S.B. Chitari & Rudra Behera). Figure 3. Iron anchor found at Chandabali on the mouth of the River Baitarani (OMISEAS, Bhubaneswar). Figure 4. Iron anchor found at Chandabali on the mouth of the River Baitarani (Photo: Sila...

  15. Mobile Anchor Assisted Node Localization for Wireless Sensor Networks

    CERN Document Server

    Chen, Hongyang; Huang, Pei; Poor, H Vincent; Sezaki, Kaoru

    2009-01-01

    In this paper, a cooperative localization algorithm is proposed that considers the existence of obstacles in mobilityassisted wireless sensor networks (WSNs). In this scheme, a mobile anchor (MA) node cooperates with static sensor nodes and moves actively to refine location performance. The localization accuracy of the proposed algorithm can be improved further by changing the transmission range of mobile anchor node. The algorithm takes advantage of cooperation betweenMAs and static sensors while, at the same time, taking into account the relay node availability to make the best use of beacon signals. For achieving high localization accuracy and coverage, a novel convex position estimation algorithm is proposed, which can effectively solve the localization problem when infeasible points occur because of the effects of radio irregularity and obstacles. This method is the only range-free based convex method to solve the localization problem when the feasible set of localization inequalities is empty. Simulatio...

  16. Simulation study of liquid crystal anchoring at a polymer surface

    Science.gov (United States)

    Hamaneh, Mehdi

    2005-03-01

    The process of rubbing a polymer substrate to induce planar anchoring has two effects. It aligns the polymer chains and also creates grooves in the surface. We have investigated which one of these effects is more important by conducting a series of simulations of molecules of 5CB in contact with a poly(vinyl alcohol) surface. The polymer surface was constructed from a set of parallel straight chains. It was then distorted to mimic the effect of grooves in a direction perpendicular to the chain direction, thus causing two opposing anchoring effects. It was found that the 5CB molecules ordered preferentially along the chain direction when the depth of the grooves was less than 20 percent of the distance between grooves. For grooves whose walls were more steeply pitched, the nematic ordering aligned with the grooves.

  17. Proteomic analysis of glycosylphosphatidylinositol-anchored membrane proteins

    DEFF Research Database (Denmark)

    Elortza, Felix; Nühse, Thomas S; Foster, Leonard J;

    2003-01-01

    Glycosylphosphatidylinositol-anchored proteins (GPI-APs) are a functionally and structurally diverse family of post-translationally modified membrane proteins found mostly in the outer leaflet of the plasma membrane in a variety of eukaryotic cells. Although the general role of GPI-APs remains...... unclear, they have attracted attention because they act as enzymes and receptors in cell adhesion, differentiation, and host-pathogen interactions. GPI-APs may represent potential diagnostic and therapeutic targets in humans and are interesting in plant biotechnology because of their key role in root...... and 44 GPI-APs in an Arabidopsis thaliana membrane preparation, representing the largest experimental dataset of GPI-anchored proteins to date....

  18. Graphene nanoribbons anchored to SiC substrates

    Science.gov (United States)

    Le, Nam B.; Woods, Lilia M.

    2016-09-01

    Graphene nanoribbons are quasi-one-dimensional planar graphene allotropes with diverse properties dependent on their width and types of edges. Graphene nanoribbons anchored to substrates is a hybrid system, which offers novel opportunities for property modifications as well as experimental control. Here we present electronic structure calculations of zigzag graphene nanoribbons chemically attached via the edges to the Si or C terminated surfaces of a SiC substrate. The results show that the edge characteristics are rather robust and the properties are essentially determined by the individual nanoribbon. While the localized spin polarization of the graphene nanoribbon edge atoms is not significantly affected by the substrate, secondary energy gaps in the highest conduction and lowest valence region may emerge in the anchored structures. The van der Waals interaction together with the electrostatic interactions due to the polarity of the surface bonds are found to be important for the structure parameters and energy stability.

  19. Anchoring FRP Composite Armor in Flexible Offshore Riser Systems

    DEFF Research Database (Denmark)

    Costache, Andrei

    Unbonded flexible pipes find extensive use in the offshore oil industry. Although more expensive than rigid pipe, the total cost of flexible pipe installations are often less. This is because flexible pipes are easier to store and deploy, coupled with superior fatigue performance. Among other...... composite materials. One of the problems related to the substitution of tensile steel members is that anchoring in the metallic end fittings of the pipe is very challenging.The purpose of this thesis is to ensure the transfer of tensile loads between a unidirectional fiber reinforced polymer and a metallic...... the grip, and to measure the contact stresses distribution and evolution during pullout.The results of the experimental and numerical analysis show that it is possible to reliably anchor composite materials using a metallic grip. The models developed during the project show how to improve the...

  20. Graphene nanoribbons anchored to SiC substrates.

    Science.gov (United States)

    Le, Nam B; Woods, Lilia M

    2016-09-14

    Graphene nanoribbons are quasi-one-dimensional planar graphene allotropes with diverse properties dependent on their width and types of edges. Graphene nanoribbons anchored to substrates is a hybrid system, which offers novel opportunities for property modifications as well as experimental control. Here we present electronic structure calculations of zigzag graphene nanoribbons chemically attached via the edges to the Si or C terminated surfaces of a SiC substrate. The results show that the edge characteristics are rather robust and the properties are essentially determined by the individual nanoribbon. While the localized spin polarization of the graphene nanoribbon edge atoms is not significantly affected by the substrate, secondary energy gaps in the highest conduction and lowest valence region may emerge in the anchored structures. The van der Waals interaction together with the electrostatic interactions due to the polarity of the surface bonds are found to be important for the structure parameters and energy stability. PMID:27392014

  1. Organization, 'Anchoring' of Knowledge, and Innovative Activity in Construction

    DEFF Research Database (Denmark)

    Drejer, Ina; Vinding, Anker Lund

    2006-01-01

    The construction industry is characterised by the widespread use of project organisation. It has been suggested that the relatively low level of innovative activity in the industry can be explained by the temporary nature of firm boundary-crossing projects. Survey data from the Danish construction...... industry is used to investigate the importance of learning and 'anchoring' of project-specific knowledge at the firm level for participation in innovative activities. The data cover both the overall Danish construction industry and a specific region, North Jutland, which has a relatively high...... specialisation of construction workers. Latent class and regression analyses reveal that firms that make extensive use of partnering, together with internal product and process evaluation and knowledge diffusion (labelled 'knowledge-anchoring mechanisms'), are more likely to participate in innovative activities...

  2. Dithiocarbamate Anchoring in Molecular Wire Junctions: A First Principles Study

    OpenAIRE

    Li, Zhenyu; Kosov, D. S.

    2007-01-01

    Recent experimental realization [J. Am. Chem. Soc., 127 (2005) 7328] of various dithiocarbamate self assembly on gold surface opens the possibility for use of dithiocarbamate linkers to anchor molecular wires to gold electrodes. In this paper, we explore this hypothesis computationally. We computed the electron transport properties of 4,4'-bipyridine (BP), 4,4'-bipyridinium-1,1'-bis(carbodithioate) (BPBC), 4-(4'-pyridyl)-peridium-1-carbodithioate (BPC) molecule junctions based on the density ...

  3. Endoplasmic reticulum anchored heme-oxygenase 1 faces the cytosol

    OpenAIRE

    Gottlieb, Yehonatan; Truman, Marianna; Cohen, Lyora A.; Leichtmann-Bardoogo, Yael; Meyron-Holtz, Esther G.

    2012-01-01

    Heme-oxygenase 1 is an endoplasmic reticulum-anchored enzyme that breaks down heme into iron, carbon monoxide and biliverdin. Heme is a hydrophobic co-factor in many proteins, including hemoglobin. Free heme is highly cytotoxic and, therefore, both heme synthesis and breakdown are tightly regulated. During turnover of heme proteins, heme is released in the phago-lysosomal compartment or the cytosol. The subcellular location of the heme-oxygenase 1 active site has not been clarified. Using con...

  4. Indoor Pedestrian Positioning Tracking Algorithm with Sparse Anchor Nodes

    OpenAIRE

    Zhou Yong; Cai Zehui; Chen Pengpeng

    2013-01-01

    In order to solve the indoor pedestrian positioning and tracking problems under the condition of sparse anchor nodes, this paper presents a new tracking scheme which predicts the staff position under the condition of indoor location fingerprints based on particle filter. In the proposed algorithm, the indoor topology is adopted to constrain and correct the results. Simulation results show that the proposed algorithm can significantly improve the accuracy of indoor pedestrian positioning and t...

  5. PredGPI: a GPI-anchor predictor

    Directory of Open Access Journals (Sweden)

    Casadio Rita

    2008-09-01

    Full Text Available Abstract Background Several eukaryotic proteins associated to the extracellular leaflet of the plasma membrane carry a Glycosylphosphatidylinositol (GPI anchor, which is linked to the C-terminal residue after a proteolytic cleavage occurring at the so called ω-site. Computational methods were developed to discriminate proteins that undergo this post-translational modification starting from their aminoacidic sequences. However more accurate methods are needed for a reliable annotation of whole proteomes. Results Here we present PredGPI, a prediction method that, by coupling a Hidden Markov Model (HMM and a Support Vector Machine (SVM, is able to efficiently predict both the presence of the GPI-anchor and the position of the ω-site. PredGPI is trained on a non-redundant dataset of experimentally characterized GPI-anchored proteins whose annotation was carefully checked in the literature. Conclusion PredGPI outperforms all the other previously described methods and is able to correctly replicate the results of previously published high-throughput experiments. PredGPI reaches a lower rate of false positive predictions with respect to other available methods and it is therefore a costless, rapid and accurate method for screening whole proteomes.

  6. A Floating Ocean Energy Conversion Device and Numerical Study on Buoy Shape and Performance

    OpenAIRE

    Ruiyin Song; Meiqin Zhang; Xiaohua Qian; Xiancheng Wang; Yong Ming Dai; Junhua Chen

    2016-01-01

    Wave and current energy can be harnessed in the East China Sea and South China Sea; however, both areas are subject to high frequencies of typhoon events. To improve the safety of the ocean energy conversion device, a Floating Ocean Energy Conversion Device (FOECD) with a single mooring system is proposed, which can be towed to avoid severe ocean conditions or for regular maintenance. In this paper, the structure of the FOECD is introduced, and it includes a catamaran platform, an oscillating...

  7. An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine

    Directory of Open Access Journals (Sweden)

    Hong Sinpyo

    2015-05-01

    Full Text Available An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine is presented. The effects of the Center of Gravity (COG, mooring line spring constant, and fair-lead location on the turbine’s motion in response to regular waves are investigated. Experimental results show that for a typical mooring system of a SPAR buoy-type Floating Offshore Wind Turbine (FOWT, the effect of mooring systems on the dynamics of the turbine can be considered negligible. However, the pitch decreases notably as the COG increases. The COG and spring constant of the mooring line have a negligible effect on the fairlead displacement. Numerical simulation and sensitivity analysis show that the wind turbine motion and its sensitivity to changes in the mooring system and COG are very large near resonant frequencies. The test results can be used to validate numerical simulation tools for FOWTs.

  8. An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine

    Science.gov (United States)

    Hong, Sinpyo; Lee, Inwon; Park, Seong Hyeon; Lee, Cheolmin; Chun, Ho-Hwan; Lim, Hee Chang

    2015-09-01

    An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine is presented. The effects of the Center of Gravity (COG), mooring line spring constant, and fair-lead location on the turbine's motion in response to regular waves are investigated. Experimental results show that for a typical mooring system of a SPAR buoy-type Floating Offshore Wind Turbine (FOWT), the effect of mooring systems on the dynamics of the turbine can be considered negligible. However, the pitch decreases notably as the COG increases. The COG and spring constant of the mooring line have a negligible effect on the fairlead displacement. Numerical simulation and sensitivity analysis show that the wind turbine motion and its sensitivity to changes in the mooring system and COG are very large near resonant frequencies. The test results can be used to validate numerical simulation tools for FOWTs.

  9. First air-sea flux mooring measurements in the Southern Ocean

    Science.gov (United States)

    Schulz, E. W.; Josey, S. A.; Verein, R.

    2012-08-01

    The Southern Ocean is a key component of the global climate system: insulating the Antarctic polar region from the subtropics, transferring climate signals throughout the world's oceans and forming the southern component of the global overturning circulation. However, the air-sea fluxes that drive these processes are severely under-observed due to the harsh and remote location. This paucity of reference observations has resulted in large uncertainties in ship-based, numerical weather prediction, satellite and derived flux products. Here, we report observations from the Southern Ocean Flux Station (SOFS); the first successful air-sea flux mooring deployment in this ocean. The mooring was deployed at 47°S, 142°E for March 2010 to March 2011 and returned measurements of near surface meteorological variables and radiative components of the heat exchange. These observations enable the first accurate quantification of the annual cycle of net air-sea heat exchange and wind stress from a Southern Ocean location. They reveal a high degree of variability in the net heat flux with extreme turbulent heat loss events, reaching -470 Wm-2 in the daily mean, associated with cold air flowing from higher southern latitudes. The observed annual mean net air-sea heat flux is a small net ocean heat loss of -10 Wm-2, with seasonal extrema of 139 Wm-2 in January and -79 Wm-2 in July. The novel observations made with the SOFS mooring provide a key point of reference for addressing the high level of uncertainty that currently exists in Southern Ocean air-sea flux datasets.

  10. Numerical modeling of a spar platform tethered by a mooring cable

    Science.gov (United States)

    Zhu, Xiangqian; Yoo, Wan-Suk

    2015-07-01

    Virtual simulation is an economical and efficient method in mechanical system design. Numerical modeling of a spar platform, tethered by a mooring cable with a spherical joint is developed for the dynamic simulation of the floating structure in ocean. The geometry modeling of the spar is created using finite element methods. The submerged part of the spar bears the buoyancy, hydrodynamic drag force, and effect of the added mass and Froude-Krylov force. Strip theory is used to sum up the forces acting on the elements. The geometry modeling of the cable is established based on the lumped-mass-and-spring modeling through which the cable is divided into 10 elements. A new element-fixed local frame is used, which is created by the element orientation vector and relative velocity of the fluid, to express the loads acting on the cable. The bottom of the cable is fixed on the seabed by spring forces, while the top of the cable is connected to the bottom of the spar platform by a modified spherical joint. This system suffers the propagating wave and current in the X-direction and the linear wave theory is applied for setting of the propagating wave. Based on the numerical modeling, the displacement-load relationships are analyzed, and the simulation results of the numerical modeling are compared with those by the commercial simulation code, ProteusDS. The comparison indicates that the numerical modeling of the spar platform tethered by a mooring cable is well developed, which provides an instruction for the optimization of a floating structure tethered by a mooring cable system.

  11. Providing Networking to the DEOS Fleet of Moored Ocean Observatories: High-Seas ROADNet.

    Science.gov (United States)

    Orcutt, J.; Berger, J.; Vernon, F.; Hansen, T.

    2003-12-01

    Recent advances in the technologies associated with computation, data telemetry and multidisciplinary sensors, have motivated the scientific community to develop a plan for long-term `ocean observatories' where sensors are deployed at the air-sea interface, within the water column, and on and beneath the seafloor. The establishment of a fleet of moored ocean buoy observatories will be an important element of the DEOS initiative, conceived as part of NSF's larger, more inclusive Ocean Observatories Initiative (OOI). These buoys will provide the infrastructure to connect the Internet to a network of ocean-bottom and ocean-column instruments. The most important requirements driving moored observatory design are the amount of power delivered to the seafloor and moored instruments and the telemetry rate that the buoy system must support between the instruments and the shore. Two designs have been developed, a wave-following discus and a spar buoy capable of delivering 500 W to the seafloor and telemetering at least 500 Mbytes of data per day to shore. The only cost-effective alternative for continuous moderate-bandwidth communication (>64 kbps) currently available is a C-Band or Ku-Band satellite system. A prototype C-Band system has been installed on the R/V Roger Revelle, the R/V Melville, and the R/V Thomas Thompson with a teleport hub at the San Diego supercomputer Center. This system provides full-period shipboard Internet connection as the ships operated over wide areas of the Pacific Ocean. The system has proved very effective in providing data, video, and voice communications for the ships' scientists and crew. The data connections to/from the ships are managed by the ROADNet (Real-time Observatories, Applications, and Data management Network) virtual object ring buffer (VORB) technology discussed in other papers in this session.

  12. MOEMS Fabry–Pérot interferometer with point-anchored Si-air mirrors for middle infrared

    International Nuclear Information System (INIS)

    We studied how a micromachined Fabry–Pérot interferometer, realized with wide point-anchored Si/air-gap reflectors, performs at the middle-infrared. A computational analysis of the anchor mechanical behavior is also presented. Compared with solid-film reflectors, this technology features better index contrast, which enables a wider stop band and potentially higher resolution. In this work, we investigate whether the performance is improved according to the index-contrast benefit, or whether the mechanical differences play a role. For comparison, we manufactured and characterized another design that applies solid-film reflectors of Si/SiO2 structure. This data is exploited as a reference for a middle-infrared interferometer and as a template for mapping the performance from the simulation results to the measured data. The novel Si/air-gap device was realized as a non-tunable proof-of-concept version. The measured data is mapped into an estimate of the achievable performance of a tunable version. We present the measured transmission and resolution data and compare the simulation models that reproduce the data. The prediction for the tunable middle-infrared Si/air-gap device is then presented. The results indicate that the interferometer’s resolution is expected to have improved twofold and have a much wider stop band compared with the prior art. (paper)

  13. Development of an Indian Ocean moored buoy array for climate studies

    Digital Repository Service at National Institute of Oceanography (India)

    McPhaden, M.J.; Kuroda, Y.; Murty, V.S.N.

    implemented through multi-national cooperative efforts. Continued commitment of financial, human, and ship time resources from several nations 14 16 28 38 47 82 60 87 109 142 0 20 40 60 80 100 120 140 160 2006 2007 2008 2009 2010 Buoys Sea Days * Indian... of an Indian Ocean Moored Buoy Array for Climate Studies McPhaden M.J. 1 , Y. Kuroda 2 and V. S. N. Murty 3 , 1 NOAA/Pacific Marine Environmental Laboratory, USA, 2 Japan Marine-Earth Science and Technology Agency, Japan, 3 National Institute...

  14. Efficient Mooring Line Fatigue Analysis Using a Hybrid Method Time Domain Simulation Scheme

    DEFF Research Database (Denmark)

    Christiansen, Niels Hørbye; Voie, Per Erlend Torbergsen; Høgsberg, Jan Becker;

    2013-01-01

    and slow drift motion. The method is tested on a mooring line system of a floating offshore platform. After training a full fatigue analysis is carried out. The results show that the ANN with high precision provides top tension force histories two orders of magnitude faster than a full dynamic...... artificial neural networks (ANN). The present study presents a novel strategy for selecting, arranging and normalizing training data for an ANN. With this approach one ANN can be trained to perform high speed dynamic response prediction for all fatigue relevant sea states and cover both wave frequency motion...

  15. RRS Discovery Cruise 382, 08 Oct - 24 Nov 2012. RAPID moorings cruise report

    OpenAIRE

    Mccarthy, G; et al.

    2012-01-01

    This cruise report covers scientific operations conducted during RRS Discovery Cruise 382. The purpose of the cruise was the refurbishment of an array of moorings spanning the latitude of 26.5°N from the Canary Islands to the Bahamas. Di382 departed from Southampton on Monday 8th October 2012, calling at Santa Cruz de Tenerife and Nassau, Bahamas before finally docking in Freeport, Bahamas on the 24th November 2012 after 47 days at sea. The full itinerary is described in Section 2. The moo...

  16. Western boundary current variability off French Guiana as observed from moored current measurements

    OpenAIRE

    Colin, Christian; Bourlès, Bernard; Chuchla, Rémy; Dangu, François

    1994-01-01

    Moored current measurements carried out from 31 March 1990 to 15 September 1991 in two stages at a point (near 6 degrees N) located over the mid-continental slope off French Guiana are presented. Six current meters were positioned between 200 and 2700 m depth. Upper level mean current data showed a northwestward flowing North Brazil Current (NBC) with mean velocity values decreasing from 10 cm/s in the range 200-250 m to almost zero at 800 m depth, the level of the Antarctic Intermediate Wate...

  17. 'Irish by descent': Marianne Moore, Irish writers and the American-Irish Inheritance'

    OpenAIRE

    Stubbs, Tara M C; O'Donoghue, Bernard (J. B.)

    2008-01-01

    Despite having a rather weak family connection to Ireland, the American modernist poet Marianne Moore (1887-1972) described herself in a letter to Ezra Pound in 1919 as ‘Irish by descent’. This thesis relates Moore’s claim of Irish descent to her career as a publisher, poet and playwright, and argues that her decision to shape an Irish inheritance for herself was linked with her self-identification as an American poet. Chapter 1 discusses Moore’s self-confessed susceptibility to ‘Irish...

  18. Equity and health policy in Africa: Using concept mapping in Moore (Burkina Faso

    Directory of Open Access Journals (Sweden)

    Ridde Valéry

    2008-04-01

    Full Text Available Abstract Background This methodological article is based on a health policy research project conducted in Burkina Faso (West Africa. Concept mapping (CM was used as a research method to understand the local views of equity among stakeholders, who were concerned by the health policy under consideration. While this technique has been used in North America and elsewhere, to our knowledge it has not yet been applied in Africa in any vernacular language. Its application raises many issues and certain methodological limitations. Our objective in this article is to present its use in this particular context, and to share a number of methodological observations on the subject. Methods Two CMs were done among two different groups of local stakeholders following four steps: generating ideas, structuring the ideas, computing maps using multidimensional scaling and cluster analysis methods, and interpreting maps. Fifteen nurses were invited to take part in the study, all of whom had undergone training on health policies. Of these, nine nurses (60% ultimately attended the two-day meeting, conducted in French. Of 45 members of village health committees who attended training on health policies, only eight were literate in the local language (Moore. Seven of these (88% came to the meeting. Results The local perception of equity seems close to the egalitarian model. The actors are not ready to compromise social stability and peace for the benefit of the worst-off. The discussion on the methodological limitations of CM raises the limitations of asking a single question in Moore and the challenge of translating a concept as complex as equity. While the translation of equity into Moore undoubtedly oriented the discussions toward social relations, we believe that, in the context of this study, the open-ended question concerning social justice has a threefold relevance. At the same time, those limitations were transformed into strengths. We understand that it was

  19. Not all nutrition claims are perceived equal: anchoring effects and moderating mechanisms in food advertising.

    Science.gov (United States)

    Paek, Hye-Jin; Yoon, Hye Jin; Hove, Thomas

    2011-03-01

    Despite the increased use of health claims in food advertising, few studies have investigated how specific nutrition claims have differential effects depending on how they are presented. In this context, the current study tests the anchoring hypothesis. Anchoring refers to a common human tendency to evaluate information differently depending on the presence or absence of a numerical "anchor" or reference point. Two (pilot and main) experimental studies explore anchoring effects on audience response to food advertising both directly and moderated by cognitive, motivational, and message factors. The pilot study finds that food product ads employing nutrition claims with an anchor rather than without an anchor generate two results: First, participants perceive the product to have lower fat/lower calorie contents (anchoring hypothesis); second, they prefer the messages with an anchor over those without an anchor. The main study reports that when anchoring is successfully evoked, it produces favorable attitudes toward the ad, favorable attitudes toward the brand, and purchase intention-but only when moderated by health orientation, claim believability, and nutrition knowledge. Practical implications are provided with respect to regulatory guidelines and effective communication strategies for promoting low-fat and low-calorie products in food advertising. PMID:21308579

  20. Mooring Tension and Motion Characteristics of A Submerged Fish Reef with Net in Waves and Currents Using Numerical Analysis

    Institute of Scientific and Technical Information of China (English)

    Tae Ho Kim; David W. Fredriksson; Judson DeCew

    2012-01-01

    A numerical model was used to analyze the motion response and mooring tension of a submerged fish reef system.The system included a net attached to a rigid structure suspended up from the bottom with a single,high tension mooring by fixed flotation.The analysis was performed by using a Morison equation type finite element model configured with truss elements.Input forcing parameters into the model consisted of both regular and irregular waves,with and without a steady current.Heave,surge and pitch dynamic calculations of the reef structure were made.Tension response results of the attached mooring line were also computed.Results were analyzed in both the time and frequency domain in which appropriate,linear transfer functions were calculated.The influence of the current was more evident in the tension and heave motion response data.This is most likely the result of the large buoyancy characteristics of the reef structure and the length of the mooring cable.Maximum mooring component tension was found to be 13.9 kN and occurred when the reef was subjected to irregular waves with a co-linear current of 1.0 m/s velocity.The results also showed that the system had little damping (in heave) with damped natural periods of 2.8 s.This combination of system characteristics promotes a possible resonating situation in typical open sea conditions with similar wave periods.

  1. An analytic-critical look at G. E. Moore's views of the relation between "Intuition" and justifying moral judgments

    Directory of Open Access Journals (Sweden)

    Aliakbar Abdulabadi

    2015-10-01

    Full Text Available In this paper, I have tried to answer, by an analytic-critical method, to this question: What is the relation between moral intuition and justifying moral judgments from Moore's viewpoint? For answering to this question, by distinguishing the two meanings of "Intuition" in Moore's views, namely "Immediate and direct perception of the property 'Goodness'" and "Immediate and direct perception of the propositions containing the predicate 'Good'" - which I have called them Intuition (1 and Intuition (2 - I have shown that, according to Moore, intuition can justify moral judgments, based on the traditional definition of "knowledge". At the end of my discussion of the relation between each of the two meanings of intuition and justifying moral judgments, I have criticized Moore's views. Following are what I finally get: a Intuition (1 implies "emotive evaluation"; b Intuition (1 doesn't provide any criterion for resolving the basic moral disagreements; c Intuition (1 can't produce any knowledge; d Since Moore's claim that "the propositions containing the predicate 'Good' are 'correspondent to reality' and 'factual'", it is unreasoned. Intuition (2 can't justify moral judgments; e since intuition (2 doesn't provide any appropriate reason for believing in the self-evidence and necessary truth of such propositions, it can't justify moral judgments

  2. Biologia do psilídeo-de-concha Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) em Eucalyptus spp. Red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera, Psylidae) biology in Eucalyptus spp.

    OpenAIRE

    Daniela Cristina Firmino-Winckler; Carlos Frederico Wilcken; Nádia Cristina de Oliveira; Carlos Alberto Oliveira de Matos

    2009-01-01

    Biologia do psilídeo-de-concha Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) em Eucalyptus spp.. Glycaspis brimblecombei Moore também conhecido por psilídeo-de-concha, se caracteriza por ser uma espécie específica ao gênero Eucalyptus L'Her. Este trabalho teve por objetivo determinar o ciclo biológico de G. brimblecombei em Eucalyptus spp. O trabalho foi conduzido em câmara climatizada (BOD), sob a temperatura de 26 °C e fotofase de 12 horas. As espécies de Eucalyptus utilizadas para o...

  3. Three new butterfly records for peninsular India: Dusky Yellow-breasted Flat Gerosis phisara (Moore (Hesperiidae, Common Gem Poritia hewitsoni Moore (Lycaenidae and Great Nawab Polyura eudamippus (Doubleday (Nymphalidae from Similipal Hills, Odisha, India

    Directory of Open Access Journals (Sweden)

    M.V. Nair

    2011-03-01

    Full Text Available Three species of butterflies hitherto known only from the Himalayan region and northeastern India, viz. Dusky Yellow-breasted Flat Gerosis phisara (Moore, Common Gem Poritia hewitsoni Moore and Great Nawab Polyura eudamippus (Doubleday were recorded from Similipal Hills, Odisha, thus constituting significant new locality records and range extensions for peninsular India. This also re-inforces the unique bio-geographic role of Similipal as a hill range harbouring representatives of north-eastern and autochthonous peninsular Indian species and supports its putative function as a possible pathway along the Eastern Ghats for species exchange between bio-geographical zones.

  4. Numerical Simulations and Model Tests of the Mooring Characteristic of A Tension Leg Platform Under Random Waves

    Institute of Scientific and Technical Information of China (English)

    谷家扬; 杨建民; 吕海宁

    2013-01-01

    Analyzing the dynamic response and calculating the tendon tension of the mooring system are necessary for the structural design of a tension leg platform (TLP). The six-degree-of-freedom dynamic coupling responses and the mooring characteristics of TLP under random waves are studied by using a self-developed program. Results are verified by the 1:40 scaling factor model test conducted in the State Key Laboratory of Ocean Engineering at Shanghai JiaoTong University. The mean, range, and standard deviation of the numerical simulation and model test are compared. The influences of different sea states and wave approach angles on the dynamic response and tendon tension of the mooring system are investigated. The acceleration in the center and corner of the deck is forecasted.

  5. A geostatistical method for assessing biomass of tuna aggregations around moored fish aggregating devices with star acoustic surveys

    OpenAIRE

    Doray, Mathieu; Petitgas, P.; Josse, Erwan

    2008-01-01

    La distribution spatiale d'agrégations de thons autour de dispositifs de concentration de poissons (DCP) ancrés a été étudiée en Martinique (Petites Antilles) au moyen de parcours acoustiques en étoile. Les densités acoustiques géoréférencées attribuées aux thons ont été analysées à l'aide d'un modèle de krigeage universel. Une tendance à large échelle a été identifiée dans la distribution spatiale des thons. Cette tendance a été modélisée de façon déterministe au moyen d'une équation d'advec...

  6. Synthesis of subnanometer-diameter vertically aligned single-walled carbon nanotubes with copper-anchored cobalt catalysts

    Science.gov (United States)

    Cui, Kehang; Kumamoto, Akihito; Xiang, Rong; An, Hua; Wang, Benjamin; Inoue, Taiki; Chiashi, Shohei; Ikuhara, Yuichi; Maruyama, Shigeo

    2016-01-01

    We synthesize vertically aligned single-walled carbon nanotubes (VA-SWNTs) with subnanometer diameters on quartz (and SiO2/Si) substrates by alcohol CVD using Cu-anchored Co catalysts. The uniform VA-SWNTs with a nanotube diameter of 1 nm are synthesized at a CVD temperature of 800 °C and have a thickness of several tens of μm. The diameter of SWNTs was reduced to 0.75 nm at 650 °C with the G/D ratio maintained above 24. Scanning transmission electron microscopy energy-dispersive X-ray spectroscopy (EDS-STEM) and high angle annular dark field (HAADF-STEM) imaging of the Co/Cu bimetallic catalyst system showed that Co catalysts were captured and anchored by adjacent Cu nanoparticles, and thus were prevented from coalescing into a larger size, which contributed to the small diameter of SWNTs. The correlation between the catalyst size and the SWNT diameter was experimentally clarified. The subnanometer-diameter and high-quality SWNTs are expected to pave the way to replace silicon for next-generation optoelectronic and photovoltaic devices.We synthesize vertically aligned single-walled carbon nanotubes (VA-SWNTs) with subnanometer diameters on quartz (and SiO2/Si) substrates by alcohol CVD using Cu-anchored Co catalysts. The uniform VA-SWNTs with a nanotube diameter of 1 nm are synthesized at a CVD temperature of 800 °C and have a thickness of several tens of μm. The diameter of SWNTs was reduced to 0.75 nm at 650 °C with the G/D ratio maintained above 24. Scanning transmission electron microscopy energy-dispersive X-ray spectroscopy (EDS-STEM) and high angle annular dark field (HAADF-STEM) imaging of the Co/Cu bimetallic catalyst system showed that Co catalysts were captured and anchored by adjacent Cu nanoparticles, and thus were prevented from coalescing into a larger size, which contributed to the small diameter of SWNTs. The correlation between the catalyst size and the SWNT diameter was experimentally clarified. The subnanometer-diameter and high

  7. Anchoring a Lexicalized Tree-Adjoining Grammar for Discourse

    CERN Document Server

    Webber, Bryan R; Webber, Bonnie Lynn; Joshi, Aravind K.

    1998-01-01

    We here explore a ``fully'' lexicalized Tree-Adjoining Grammar for discourse that takes the basic elements of a (monologic) discourse to be not simply clauses, but larger structures that are anchored on variously realized discourse cues. This link with intra-sentential grammar suggests an account for different patterns of discourse cues, while the different structures and operations suggest three separate sources for elements of discourse meaning: (1) a compositional semantics tied to the basic trees and operations; (2) a presuppositional semantics carried by cue phrases that freely adjoin to trees; and (3) general inference, that draws additional, defeasible conclusions that flesh out what is conveyed compositionally.

  8. Direct imaging of rotating molecules anchored on graphene

    Science.gov (United States)

    Choe, Jeongheon; Lee, Yangjin; Fang, Lei; Lee, Gun-Do; Bao, Zhenan; Kim, Kwanpyo

    2016-07-01

    There has been significant research interest in controlling and imaging molecular dynamics, such as translational and rotational motions, especially at a single molecular level. Here we applied aberration-corrected transmission electron microscopy (ACTEM) to actuate and directly image the rotational motions of molecules anchored on a single-layer-graphene sheet. Nanometer-sized carbonaceous molecules anchored on graphene provide ideal systems for monitoring rotational motions via ACTEM. We observed the preferential registry of longer molecular axis along graphene zigzag or armchair lattice directions due to the stacking-dependent molecule-graphene energy landscape. The calculated cross section from elastic scattering theory was used to experimentally estimate the rotational energy barriers of molecules on graphene. The observed energy barrier was within the range of 1.5-12 meV per atom, which is in good agreement with previous calculation results. We also performed molecular dynamics simulations, which revealed that the edge atoms of the molecule form stably bonds to graphene defects and can serve as a pivot point for rotational dynamics. Our study demonstrates the versatility of ACTEM for the investigation of molecular dynamics and configuration-dependent energetics at a single molecular level.There has been significant research interest in controlling and imaging molecular dynamics, such as translational and rotational motions, especially at a single molecular level. Here we applied aberration-corrected transmission electron microscopy (ACTEM) to actuate and directly image the rotational motions of molecules anchored on a single-layer-graphene sheet. Nanometer-sized carbonaceous molecules anchored on graphene provide ideal systems for monitoring rotational motions via ACTEM. We observed the preferential registry of longer molecular axis along graphene zigzag or armchair lattice directions due to the stacking-dependent molecule-graphene energy landscape. The

  9. Analytical Model for Hook Anchor Pull-Out

    DEFF Research Database (Denmark)

    Brincker, Rune; Ulfkjær, Jens Peder; Adamsen, Peter; Langvad, Lotte; Toft, Rune

    A simple analytical model for the pull-out of a hook anchor is presented. The model is based on a simplified version of the fictitious crack model. It is assumed that the fracture process is the pull-off of a cone shaped concrete part, simplifying the problem by assuming pure rigid body motions...... allowing elastic deformations only in a layer between the pull-out cone and the concrete base. The derived model is in good agreement with experimental results, it predicts size effects and the model parameters found by calibration of the model on experimental data are in good agreement with what should be...

  10. Models for Anchoring and Acquiescence Bias in Consumption Data

    OpenAIRE

    van Soest, A.H.O.; Hurd, M.

    2004-01-01

    Item non-response in household survey data on economic variables such as income, assets or consumption is a well-known problem. Follow-up unfolding bracket questions have been used as a tool to collect partial information on respondents that do not answer an open-ended question. It is also known, however, that mistakes are made in answering such unfolding bracket questions. In this paper, we develop several limited dependent variable models to analyze two sources of mistakes, anchoring and ac...

  11. Numerical investigation of mooring line damping and the drag coefficients of studless chain links

    Science.gov (United States)

    Xu, Zhengqiang; Huang, Shan

    2014-03-01

    The chain/wire rope/chain combination is a common choice for mooring offshore floating platforms. However, data of the drag coefficients of chain links are rather limited, resulting in uncertainties with the calculations of the drag force, and hence the damping of the mooring system. In this paper, the importance of the selection of the drag coefficient is first investigated. The computational fluid dynamics (CFD) method is then used to determine the drag coefficients of a studless chain under steady flows. Numerical model validation is first completed by simulating a smooth circular cylinder under steady flows. In particular, the performance of different turbulence models is assessed through the comparisons between the calculations and the experimental results. The large eddy simulation (LES) model is finally selected for the simulation of steady flows past a chain. The effects of the Reynolds number on the drag coefficient of a stud-less chain is also studied. The results show that the calculated drag coefficients of a stud-less chain are fairly consistent with the available experimental data.

  12. Numerical Analysis of Hydrodynamic Behaviors of Two Net Cages with Grid Mooring System Under Wave Action

    Institute of Scientific and Technical Information of China (English)

    CHEN Chang-ping; ZHAO Yun-peng; LI Yu-cheng; DONG Guo-hai; ZHENG Yan-na

    2012-01-01

    Based on rigid kinematics theory and lumped mass method,a mathematical model of the two net cages of grid mooring system under waves is developed.In order to verify the numerical model,a series of physical model tests have been carried out.According to the comparisons between the simulated and the experimental results,it can be found that the simulated and the experimental results agree well in each wave condition.Then,the forces on the mooring lines and the floating collar movement are calculated under different wave conditions.Numerical results show that under the same condition,the forces on the bridle ropes are the largest,followed by forces on the main ropes and the grid ropes.The horizontal and the vertical float collar motion amplitudes increase with the increase of wave height,while the relationship of the horizontal motion amplitude and the wave period is indistinct.The vertical motion amplitude of the two cages is almost the same,while on the respect of horizontal motion amplitude,cage B (behind cage A,as shown in Fig.4) moves much farther than cage A under the same wave condition.The inclination angle of the floating system both in clockwise alongy axis and the counter one enlarges a little with the increase of wave height.

  13. Motion performance and mooring system of a floating offshore wind turbine

    Science.gov (United States)

    Zhao, Jing; Zhang, Liang; Wu, Haitao

    2012-09-01

    The development of offshore wind farms was originally carried out in shallow water areas with fixed (seabed mounted) structures. However, countries with limited shallow water areas require innovative floating platforms to deploy wind turbines offshore in order to harness wind energy to generate electricity in deep seas. The performances of motion and mooring system dynamics are vital to designing a cost effective and durable floating platform. This paper describes a numerical model to simulate dynamic behavior of a new semi-submersible type floating offshore wind turbine (FOWT) system. The wind turbine was modeled as a wind block with a certain thrust coefficient, and the hydrodynamics and mooring system dynamics of the platform were calculated by SESAM software. The effect of change in environmental conditions on the dynamic response of the system under wave and wind loading was examined. The results indicate that the semi-submersible concept has excellent performance and SESAM could be an effective tool for floating wind turbine design and analysis.

  14. Motion Performance and Mooring System of a Floating Offshore Wind Turbine

    Institute of Scientific and Technical Information of China (English)

    Jing Zhao; Liang Zhang; Haitao Wu

    2012-01-01

    The development of offshore wind farms was originally carried out in shallow water areas with fixed (seabed mounted) structures.However,countries with limited shallow water areas require innovative floating platforms to deploy wind turbines offshore in order to harness wind energy to generate electricity in deep seas.The performances of motion and mooring system dynamics are vital to designing a cost effective and durable floating platform.This paper describes a numerical model to simulate dynamic behavior of a new semi-submersible type floating offshore wind turbine (FOWT) system.The wind turbine was modeled as a wind block with a certain thrust coefficient,and the hydrodynamics and mooring system dynamics of the platform were calculated by SESAM software.The effect of change in environmental conditions on the dynamic response of the system under wave and wind loading was examined.The results indicate that the semi-submersible concept has excellent performance and SESAM could be an effective tool for floating wind turbine design and analysis.

  15. Interpretando la Paradoja de Moore: la irracionalidad de una oración mooreana

    Directory of Open Access Journals (Sweden)

    Cristina Borgoni

    2009-11-01

    Full Text Available Este trabajo ofrece una lectura de la Paradoja de Moore que pone énfasis en su relevancia para nuestra comprensión de la racionalidad y de la interpretación lingüística. Mantiene que las oraciones que dan origen a la paradoja no necesitan entenderse en términos de ausencia de una contradicción, sino más bien en términos de ausencia de racionalidad, entendida esta como un término más amplio que el de coherencia y consistencia lógica. Se defenderá tal posición por medio de tres tesis, dos de las cuales se derivan de los enfoques dominantes (aunque insuficientes a la paradoja: el de Moore, el de Wittgenstein y el de Shoemaker || This paper offers an interpretation of Moore’s Paradox that emphasizes its relevance for our understanding of rationality and linguistic interpretation. The sentences that originate the paradox do not need to be thought of in terms of the absence of a contradiction, but in terms of absence of rationality, where rationality is understood as a broader notion than coherence and logical consistency. This is defended through three theses, two of which stem from the dominant (but insufficient approaches to the paradox: Moore’s, Wittgenstein’s and Shoemaker’s.

  16. Enabling More than Moore: Accelerated Reliability Testing and Risk Analysis for Advanced Electronics Packaging

    Science.gov (United States)

    Ghaffarian, Reza; Evans, John W.

    2014-01-01

    For five decades, the semiconductor industry has distinguished itself by the rapid pace of improvement in miniaturization of electronics products-Moore's Law. Now, scaling hits a brick wall, a paradigm shift. The industry roadmaps recognized the scaling limitation and project that packaging technologies will meet further miniaturization needs or ak.a "More than Moore". This paper presents packaging technology trends and accelerated reliability testing methods currently being practiced. Then, it presents industry status on key advanced electronic packages, factors affecting accelerated solder joint reliability of area array packages, and IPC/JEDEC/Mil specifications for characterizations of assemblies under accelerated thermal and mechanical loading. Finally, it presents an examples demonstrating how Accelerated Testing and Analysis have been effectively employed in the development of complex spacecraft thereby reducing risk. Quantitative assessments necessarily involve the mathematics of probability and statistics. In addition, accelerated tests need to be designed which consider the desired risk posture and schedule for particular project. Such assessments relieve risks without imposing additional costs. and constraints that are not value added for a particular mission. Furthermore, in the course of development of complex systems, variances and defects will inevitably present themselves and require a decision concerning their disposition, necessitating quantitative assessments. In summary, this paper presents a comprehensive view point, from technology to systems, including the benefits and impact of accelerated testing in offsetting risk.

  17. Study of two dimensional nematic liquid crystal reorientations and anchoring effects

    OpenAIRE

    S Shoarinejad; MA Shahzamanian

    2010-01-01

    In this paper, the director distribution is calculated for a nematic liquid crystal, in the cell with different surface anchoring conditions and external fields. The effects of finite and infinite surface anchoring on molecular orientations for one dimensional geometry are discussed. In these situations, the planar alignment is considered. Then, in a two dimensional geometry the planar and homotropic anchoring conditions are assumed for wall- interfaces of confined nematic, and the reorientat...

  18. Membrane curvature enables N-Ras lipid anchor sorting to liquid-ordered membrane phases

    DEFF Research Database (Denmark)

    Larsen, Jannik Bruun; Jensen, Martin Borch; Bhatia, Vikram Kjøller;

    2015-01-01

    Trafficking and sorting of membrane-anchored Ras GTPases are regulated by partitioning between distinct membrane domains. Here, in vitro experiments and microscopic molecular theory reveal membrane curvature as a new modulator of N-Ras lipid anchor and palmitoyl chain partitioning. Membrane...... curvature was essential for enrichment in raft-like liquid-ordered phases; enrichment was driven by relief of lateral pressure upon anchor insertion and most likely affects the localization of lipidated proteins in general....

  19. An internally positioned signal can direct attachment of a glycophospholipid membrane anchor

    OpenAIRE

    1991-01-01

    All known glycophosphatidylinositol (GPI)-anchored membrane proteins contain a COOH-terminal hydrophobic domain necessary for signalling anchor attachment. To examine the requirement that this signal be at the COOH terminus of the protein, we constructed a chimeric protein, DAFhGH, in which human growth hormone (hGH) was fused to the COOH terminus of decay accelerating factor (DAF) (a GPI-anchored protein), thereby placing the GPI signal in the middle of the chimeric protein. We show that the...

  20. A glycophospholipid membrane anchor acts as an apical targeting signal in polarized epithelial cells

    OpenAIRE

    1989-01-01

    Glycosyl-phosphatidylinositol- (GPI) anchored proteins contain a large extracellular protein domain that is linked to the membrane via a glycosylated form of phosphatidylinositol. We recently reported the polarized apical distribution of all endogenous GPI-anchored proteins in the MDCK cell line (Lisanti, M. P., M. Sargiacomo, L. Graeve, A. R. Saltiel, and E. Rodriguez-Boulan. 1988. Proc. Natl. Acad. Sci. USA. 85:9557-9561). To study the role of this mechanism of membrane anchoring in targeti...

  1. Model Test of Anchoring Effect on Zonal Disintegration in Deep Surrounding Rock Masses

    OpenAIRE

    Xu-Guang Chen; Qiang-Yong Zhang; Yuan Wang; De-Jun Liu; Ning Zhang

    2013-01-01

    The deep rock masses show a different mechanical behavior compared with the shallow rock masses. They are classified into alternating fractured and intact zones during the excavation, which is known as zonal disintegration. Such phenomenon is a great disaster and will induce the different excavation and anchoring methodology. In this study, a 3D geomechanics model test was conducted to research the anchoring effect of zonal disintegration. The model was constructed with anchoring in a half an...

  2. Nothing so certain as your anchors? A consumer bias that might lower prices

    OpenAIRE

    Bakó, Barna; Kálecz-Simon, András

    2014-01-01

    Anchoring is a well-known decision-making bias: original guesses for a certain question could act as anchors and could influence our final answers. Reference prices - in a similar fashion - can lead to a bias in consumer valuations, and thus consumer demand will be coherent but not one derived from a utility framework. In our paper we investigate the effect of the existence of anchoring on how oligopolistic firms might change their pricing strategy. More specifically, we analyze the effec...

  3. Integration of multi-objective structural optimization into cementless hip prosthesis design: Improved Austin-Moore model.

    Science.gov (United States)

    Kharmanda, G

    2016-11-01

    A new strategy of multi-objective structural optimization is integrated into Austin-Moore prosthesis in order to improve its performance. The new resulting model is so-called Improved Austin-Moore. The topology optimization is considered as a conceptual design stage to sketch several kinds of hollow stems according to the daily loading cases. The shape optimization presents the detailed design stage considering several objectives. Here, A new multiplicative formulation is proposed as a performance scale in order to define the best compromise between several requirements. Numerical applications on 2D and 3D problems are carried out to show the advantages of the proposed model. PMID:27028554

  4. Post-installed concrete anchors in nuclear power plants: Performance and qualification

    International Nuclear Information System (INIS)

    Graphical abstract: - Highlights: • Review of qualification and design regulations for anchors in nuclear power plants. • First complete set of nuclear anchor load–displacement data and its evaluation ever. • Demonstration of robust test behavior of a qualified post-installed anchor product. - Abstract: In nuclear power plants (NPPs), post-installed anchors are widely used for structural and non-structural connections to concrete. In many countries, anchor products employed for safety relevant applications have to be approved by the authorities. For the high safety standards in force for NPPs, special requirements have to be met to allow for extreme design situations. This paper presents an experimental test program conducted to evaluate the performance of anchors according to the German Guideline for Anchorages in Nuclear Power Plants and Nuclear Technology Installations (DIBt KKW Leitfaden, 2010). After a brief introduction to anchor behavior and the regulative context, the results of tension and shear tests carried out on undercut anchors are discussed. Robust load capacities and relatively small displacements determined for demanding load and crack cycling tests demonstrated the suitability of anchors qualified according to a state-of-the-art qualification guideline

  5. The biggest stone anchors (Indo-Arab type) from Mithi Virdi, Bhavnagar, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Kumar, B.

    as Bhima Ka Khatiya ('Cot of Bhima'), was discovered near the village of Mithi Virdi. Here, five grapnel type of stone anchors were noticed lying in a field. The lower two holes of the grapnel anchors on either face of the section of stone block... been cut from conglomeratic sedimentary grit rock, which is dark brown in colour and small gravel can be noticed. The anchors have only lower two rectangular holes and the upper circular hole is absent in all the anchors. A brief description...

  6. Theoretical model and solution for the rheological problem of anchor-grouting a soft rock tunnel

    International Nuclear Information System (INIS)

    The paper presents an analytical method for analysis of the soft rock tunnel, based on a model dividing soft rock tunnels into a region of anchor-grouting and a region of non-anchor-grouting surrounding rock. The Poynting-Thomson model and the Kelvin-Hooke model are applied to the region of non-anchor-grouting surrounding rock and the region of anchor-grouting, respectively. Stress expressions in the region of non-anchor-grouting surrounding rock and the region of anchor-grouting are obtained. Expanding the expression of displacements in the region of anchor-grouting into a Maclaurin series, and utilizing the cumulative displacement curve of the surrounding rock through observation, a theoretical model is set up. This model and its solution for the rheology problem of anchor-grouting a soft tunnel have been proved to be effective in practical engineering; according to the Mohr-Coulomb yield condition, a safe criterion for an anchor-grouting soft rock of a tunnel can be found

  7. Radiocarbon dates of the medieval period stone anchors from Dabhol, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Tripati, S.; Vora, K.H.

    dredging operation in Dabhol creek. the anchors are lying in front of the Cus- tom Office of Dabhol. One of the anchors had wooden fluke remains in the holes, which were removed and kept safely by an active social worker at Dabhol. These anchors.... The calibrated date of the first sam- ple ranged between 654 and 524 yrs BP, and the second sample ranged between 653 and 537 yrs BP (Table 2). Discussion The discovery of anchors from the Dab- hol creek is one of the significant find- ings to support...

  8. Dithiocarbamate anchoring in molecular wire junctions: a first principles study.

    Science.gov (United States)

    Li, Zhenyu; Kosov, Daniel S

    2006-05-25

    Recent experimental realization [J. Am. Chem. Soc., 127 (2005) 7328] of various dithiocarbamate self-assembly on gold surface opens the possibility for use of dithiocarbamate linkers to anchor molecular wires to gold electrodes. In this paper, we explore this hypothesis computationally. We computed the electron transport properties of 4,4'-bipyridine (BP), 4,4'-bipyridinium-1,1'-bis(carbodithioate) (BPBC), 4-(4'-pyridyl)-peridium-1-carbodithioate (BPC) molecule junctions based on the density functional theory and nonequilibrium Green's functions. We demonstrated that the stronger molecule-electrode coupling associated with the conjugated dithiocarbamate linker broadens transmission resonances near the Fermi energy. The broadening effect along with the extension of the pi conjugation from the molecule to the gold electrodes lead to enhanced electrical conductance for BPBC molecule. The conductance enhancement factor is as large as 25 at applied voltage bias 1.0 V. Rectification behavior is predicted for BPC molecular wire junction, which has the asymmetric anchoring groups. PMID:16706444

  9. Field Behavior of A High Anchored Reinforced Earth Wall

    Directory of Open Access Journals (Sweden)

    Faisal H. Ali

    2008-01-01

    Full Text Available Since the invention of Reinforced Earth by the French architect Hendri Vidal in 1966, numerous reinforced soil walls have been designed and constructed all over the world. In this study the focus was on a particular type of reinforced wall called Nehemiah wall which differed from the Vidal type in the sense that instead of steel strips, the reinforcing elements consisted of steel bars with anchor blocks attached at the free ends. A full scale high anchored reinforced earth wall was constructed and instrumented to capture the essential behavior of the wall. Two sections of the wall were monitored where at one of the sections polystyrene foam was inserted at the back face of the wall panel to allow for lateral deformation to take place which means that the facing was less flexible in the transverse direction. The lateral deformation, axial forces along the reinforcing bars and settlement were monitored and measured for both cases and the results were compared and discussed.

  10. Direct imaging of rotating molecules anchored on graphene.

    Science.gov (United States)

    Choe, Jeongheon; Lee, Yangjin; Fang, Lei; Lee, Gun-Do; Bao, Zhenan; Kim, Kwanpyo

    2016-07-21

    There has been significant research interest in controlling and imaging molecular dynamics, such as translational and rotational motions, especially at a single molecular level. Here we applied aberration-corrected transmission electron microscopy (ACTEM) to actuate and directly image the rotational motions of molecules anchored on a single-layer-graphene sheet. Nanometer-sized carbonaceous molecules anchored on graphene provide ideal systems for monitoring rotational motions via ACTEM. We observed the preferential registry of longer molecular axis along graphene zigzag or armchair lattice directions due to the stacking-dependent molecule-graphene energy landscape. The calculated cross section from elastic scattering theory was used to experimentally estimate the rotational energy barriers of molecules on graphene. The observed energy barrier was within the range of 1.5-12 meV per atom, which is in good agreement with previous calculation results. We also performed molecular dynamics simulations, which revealed that the edge atoms of the molecule form stably bonds to graphene defects and can serve as a pivot point for rotational dynamics. Our study demonstrates the versatility of ACTEM for the investigation of molecular dynamics and configuration-dependent energetics at a single molecular level. PMID:27333828

  11. Impact of recirculation on the East Greenland Current in Fram Strait: Results from moored current meter measurements between 1997 and 2009

    NARCIS (Netherlands)

    de Steur, L.; Hansen, E.; Mauritzen, C.; Beszczynska-Möller, A.; Fahrbach, E.

    2014-01-01

    Transports of total volume and water masses obtained from a mooring array in the East Greenland Current (EGC) in Fram Strait are presented for the period 1997–2009. The array in the EGC was moved along isobaths from 79°N to 78°50'N78°50'N in 2002 to line up with moorings in the eastern Fram Strait.

  12. The Moundville Expeditions of Clarence Bloomfield Moors, edited and with an Introduction by Vernon James Knight Jr. University of Alabama Press, Tuscaloosa, 1996

    Directory of Open Access Journals (Sweden)

    Douglas R. Givens

    1997-11-01

    Full Text Available The University of Alabama Press has done a valuable service to the Americanist archaeological community by reprinting certain parts of Clarence B. Moore's Moundville's work. As part of their series "Classics in Southeastern Archaeology", this volume provides the historian of Americanist archaeology yet another glimpse into the Moore's classic work at Moundville.

  13. Photovoltaic device

    Science.gov (United States)

    Reese, Jason A.; Keenihan, James R.; Gaston, Ryan S.; Kauffmann, Keith L.; Langmaid, Joseph A.; Lopez, Leonardo C.; Maak, Kevin D.; Mills, Michael E.; Ramesh, Narayan; Teli, Samar R.

    2015-06-02

    The present invention is premised upon an improved photovoltaic device ("PV device"), more particularly to an improved photovoltaic device with a multilayered photovoltaic cell assembly and a body portion joined at an interface region and including an intermediate layer, at least one interconnecting structural member, relieving feature, unique component geometry, or any combination thereof.

  14. Photovoltaic device

    Science.gov (United States)

    Reese, Jason A.; Keenihan, James R.; Gaston, Ryan S.; Kauffmann, Keith L.; Langmaid, Joseph A.; Lopez, Leonardo C.; Maak, Kevin D.; Mills, Michael E.; Ramesh, Narayan; Teli, Samar R.

    2015-09-01

    The present invention is premised upon an improved photovoltaic device ("PV device"), more particularly to an improved photovoltaic device (10) with a multilayered photovoltaic cell assembly (100) and a body portion (200) joined at an interface region (410) and including an intermediate layer (500), at least one interconnecting structural member (1500), relieving feature (2500), unique component geometry, or any combination thereof.

  15. Concentration device

    DEFF Research Database (Denmark)

    2013-01-01

    A concentration device (2) for filter filtration concentration of particles (4) from a volume of a fluid (6). The concentration device (2) comprises a filter (8) configured to filter particles (4) of a predefined size in the volume of the fluid (6). The concentration device (2) comprises...

  16. Controlling the Adsorption of Ruthenium Complexes on Carbon Surfaces through Noncovalent Bonding with Pyrene Anchors: An Electrochemical Study.

    Science.gov (United States)

    Kohmoto, Mayuko; Ozawa, Hiroaki; Yang, Li; Hagio, Toshihiro; Matsunaga, Mariko; Haga, Masa-Aki

    2016-05-01

    Surface modifications of carbon nanomaterials, such as graphene or carbon nanotubes, through noncovalent π-π interactions between π-conjugated carbon surfaces and pyrene anchors have received much attention on account of the applications of these materials in organic electronic and sensor devices. Despite the rapidly expanding use of pyrene anchors, little is known about the number of pyrene groups required in order to achieve a stable attachment of molecules on nanocarbon surfaces. So far, systematic studies on such surface modifications through adsorption isotherms and desorption behavior of molecules still remain scarce. In this study, we have investigated the effect of the number of pyrene anchors in redox-active Ru complexes on their adsorption on carbon nanomaterials through noncovalent π-π interactions. The Ru(II/III) couple was used as a redox marker in order to determine the surface coverage on nanocarbon surfaces such as highly oriented pyrolytic graphite (HOPG), single-walled carbon nanotubes (SWCNTs), and multiwalled carbon nanotubes (MWCNTs). The amount of surface coverage as well as the kinetic stability of the Ru complexes was thereby observed to be directly proportional to the number of pyrene groups present in the ligands. The desorption rate from HOPG electrode increased in the order Ru-1 with eight pyrene groups (k = 2.0 × 10(-5) s(-1)) compounds having more than two and/or optimally four pyrene groups revealed a stable adsorption on the nanocarbon surfaces. The heterogeneous electron transfer rate between the Ru complex, Ru-2, and the carbon nanomaterials increased in the order SWCNTs (kET = 1.3 s(-1)) < MWCNTs (ϕ = 5-9 nm) (kET = 4.0 s(-1)) < MWCNTs (ϕ = 110-170 nm) (kET = 14.9 s(-1)) < HOPG (kET = 110 s(-1)). PMID:27065057

  17. Temperature, salinity, velocity including ADCP ice tracking, and bottom pressure collected from moored buoys in Bering Strait from 2011-07-14 to 2013-07-05 (NCEI Accession 0138173)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from moorings deployed in the US waters of the Bering Strait from summer 2011 to summer 2013 (with mooring servicing in summer 2012). For...

  18. Temperature, salinity, velocity including ADCP ice tracking, and bottom pressure collected by Bering Strait Moorings A2W, A2, A4W, A4, A3 from 2010-08-03 to 2011-07-14 (NCEI Accession 0138583)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from US moorings deployed in the Bering Strait from summer 2010 to summer 2011. Moorings were also deployed for this period in Russian...

  19. Wind wave spectra data from moored current meter and bottle casts in the Gulf of Mexico as part of the Brine Disposal project, 01 September 1980 - 01 September 1980 (NODC Accession 8000594)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Wind wave spectra data were collected using moored current meter and moored buoy casts in the Gulf of Mexico from September 1, 1980 to September 1, 1980. Data were...

  20. Wind wave spectra data from moored current meter and bottle casts in the Gulf of Mexico as part of the Brine Disposal project, 01 July 1980 - 01 August 1980 (NODC Accession 8000496)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Wind wave spectra data were collected using moored current meter and moored buoy casts in the Gulf of Mexico from July 1, 1980 to August 1, 1980. Data were...

  1. Deployable Emergency Shutoff Device Blocks High-Velocity Fluid Flows

    Science.gov (United States)

    Nabors, Sammy A.

    2015-01-01

    NASA's Marshall Space Flight Center has developed a device and method for blocking the flow of fluid from an open pipe. Motivated by the sea-bed oil-drilling catastrophe in the Gulf of Mexico in 2010, NASA innovators designed the device to plug, control, and meter the flow of gases and liquids. Anchored with friction fittings, spikes, or explosively activated fasteners, the device is well-suited for harsh environments and high fluid velocities and pressures. With the addition of instrumentation, it can also be used as a variable area flow metering valve that can be set based upon flow conditions. With robotic additions, this patent-pending innovation can be configured to crawl into a pipe then anchor and activate itself to block or control fluid flow.

  2. C-Anchor for Strengthening the Connection between Adhesively Bonded Laminates and Concrete Substrates

    Directory of Open Access Journals (Sweden)

    Ghani Razaqpur

    2015-11-01

    Full Text Available A new carbon fiber reinforced polymer (CFRP anchor is developed and tested to delay debonding in reinforced concrete (RC beams externally strengthened with FRP laminate/sheet. The C-shape anchor is made from a commercially available CFRP grid. The anchors legs are 95 mm long while the spacing between the legs is adjustable, depending on FRP laminate and beam widths. Nine full scale RC beams, 3.0 m long, 250 mm wide and 400 mm deep, were strengthened with CFRP laminate/sheet, with and without the C-anchor. The main test parameters were the type and amount of FRP laminate and the presence/absence of the anchor. Test results showed that beams with the anchor had generally 5%–10% higher debonding and failure load, and they reached higher deflection at failure than the companion beams without anchors. Although complete separation of the FRP laminate from the concrete was not observed in any of the beams with anchors, there was noticeable slip at failure at one end of the laminate. A significant outcome of the study is that anchors are effective in limiting the extent of debonding along the laminate, thus contributing to the flexural stiffness of the beam by reducing the extent of cracking and limiting the crack width along the beam. Finally, the anchor allowed the FRP to reach or exceed its theoretically allowable strain computed based on the American Concrete Institute (ACI Committee 440 recommendation while in none of the beams without anchors, the FRP reached its theoretically allowable strain.

  3. Impingement syndrome of the shoulder following double row suture anchor technique for arthroscopic rotator cuff repair: a case report

    Directory of Open Access Journals (Sweden)

    Rambani Rohit

    2009-06-01

    Full Text Available Abstract Introduction Arthroscopic repair of the rotator cuff is a demanding surgery. Accurate placement of anchors is key to success. Case presentation A 38-year-old woman received arthroscopic repair of her rotator cuff using a double row suture anchor technique. Postoperatively, she developed impingement syndrome which resulted from vertical displacement of a suture anchor once the shoulder was mobilised. The anchor was removed eight weeks following initial surgery and the patient had an uneventful recovery. Conclusion Impingement syndrome following arthroscopic repair of the rotator cuffs using double row suture anchor has not been widely reported. This is the first such case where anchoring has resulted in impingement syndrome.

  4. Temperature, conductivity, pressure, oxygen concentration, beam attenuation, Chlorophyll-a fluorescence, current speed and direction, and particle size distribution collected from moored platform using CTD, ADCP, acoustic Doppler velocimeter, and benthic optical sensors in Monterey Bay from 2011-05-03 to 2012-10-29 (NODC Accession 0123606)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Observational oceanographic data obtained by an autonomous moored CTD profiler, thermistor mooring, acoustic Doppler current profiler, acoustic Doppler velocimeter,...

  5. The relation between motions of moored ships due to wake wash of passing vessels and the hindrance thereof

    NARCIS (Netherlands)

    Luth, H; Bos, J.E.; Keuning, J.; Hout, I. van der

    2009-01-01

    After the introduction of Fast Ferry public transport in the Netherlands a number of complaints about wake wash induced hindrance onboard moored vessels appeared. It was already possible to calculate the wake wash characteristics of fast sailing vessels, the progress of these waves in a waterway and

  6. New corological and biological data of the Red Gum Lerp Psyllid, Glycaspis brimblecombei Moore, 1964 in Italy (Hemiptera, Psyllidae)

    OpenAIRE

    Ricardo Jiménez-Peydró; Francisco Javier Peris-Felipo

    2011-01-01

    Glycaspis brimblecombei Moore, 1964 is a psyllid (Hemiptera: Psyllidae) pest of Eucalyptus, native toAustralia and first recorded in Europe: Spain in 2008 and more recently (2010) in Italy. The present paper dealswith recent research, carried out in central Italy, with new data on the distribution and biology of this species.

  7. FIRST RECORD IN ITALY OF PSYLLAEPHAGUS BLITEUS RIEK (Hymenoptera Encyrtidae) PARASITOID OF GLYCASPIS BRIMBLECOMBEI MOORE (Hemiptera Psyllidae)

    OpenAIRE

    Caleca, V.; LO VERDE, G; Maltese, M.

    2011-01-01

    Psyllaephagus bliteus Riek (Hymenoptera Encyrtidae), parasitoid of the red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera Psyllidae), has been recorded for the first time in Italy in September 2011. The arrival of P. bliteus in Sicily is due to an accidental introduction, probably together with its host, as already happened in New Zealand, Brazil, Spain and Morocco.

  8. Moore and Imwalle: Archaeological Investigations at CA-SBA-1809, A Protohistoric Settlement, Goleta, Sana Barbara County, California

    OpenAIRE

    Gamble, Lynn H.

    1992-01-01

    Archaeological Investigations at CA-SBA-1809, A Protohistoric Settlement, Goleta, Santa Barbara County, California. Jerry D. Moore and Michael H. Imwalle. Salinas, CA: Coyote Press Archives of California Prehistory No. 19, 1988, vi + 69 pp., 7 figs., 13 tables, $6.20 (paper).

  9. Retrieving Rightfulness – The White Moor Fairy Tale Comic Strip And The Acnowledgment By Postmodernist Readers Of An Emerging Genre

    Directory of Open Access Journals (Sweden)

    Catalina Andreea-Nicoleta

    2015-11-01

    Full Text Available The paper presents the impact of the Romanian The White Moor fairy tale adaptation into comic strip format on its various readers. The results of a well-developed questionnaire, randomly sent to some of the graphic version readers, are interpreted and unforeseen results thereafter highlight the weightiness of comics, despite steady disesteem and recurrent association with low-culture.

  10. OCORRÊNCIA DE Glycaspis brimblecombei (Moore, 1964 (Hemiptera: Psyllidae EM Eucalyptus spp. NO RIO GRANDE DO SUL, BRASIL

    Directory of Open Access Journals (Sweden)

    Leonardo da Silva Oliveira

    2006-07-01

    Full Text Available Em janeiro de 2005, pela primeira vez, foi constatada a ocorrência de Glycaspis brimblecombei (Moore, 1964 (Hemiptera: Psyllidae em espécies de Eucalyptus spp. no estado do Rio Grande do Sul, Brasil. A observação ocorreu nos municípios de Butiá, Caçapava do Sul e Santa Maria.

  11. New corological and biological data of the Red Gum Lerp Psyllid, Glycaspis brimblecombei Moore, 1964 in Italy (Hemiptera, Psyllidae

    Directory of Open Access Journals (Sweden)

    Ricardo Jiménez-Peydró

    2011-03-01

    Full Text Available Glycaspis brimblecombei Moore, 1964 is a psyllid (Hemiptera: Psyllidae pest of Eucalyptus, native toAustralia and first recorded in Europe: Spain in 2008 and more recently (2010 in Italy. The present paper dealswith recent research, carried out in central Italy, with new data on the distribution and biology of this species.

  12. Laylander and Moore (eds.): The Prehistory of Baja California: Advances in the Archaeology of the Forgotten Peninsula

    OpenAIRE

    Foster, John W.; Fitzgerald, Richard T

    2007-01-01

    The Prehistory of Baja California: Advances in the Archaeology of the Forgotten Peninsula Don Laylander and Jerry D. Moore (eds.) Gainesville: University Press of Florida, 2006 254 pp., maps, illustrations, tables, bibliography, index; $55.00, (cloth). ISBN: 0-8130-2939-2

  13. Effects of habitat fragmentation and road density on the distribution pattern of the moor frog Rana arvalis.

    NARCIS (Netherlands)

    Vos, C.C.; Chardon, P.

    1998-01-01

    1. The effects of habitat fragmentation on the distribution pattern of the moor frog Rana arvalis were investigated. Also, the possible isolation effects of the road network were taken into account. 2. Indications were found that habitat fragmentation partly explains the distribution pattern of the

  14. Optimization of neural networks for time-domain simulation of mooring lines

    DEFF Research Database (Denmark)

    Christiansen, Niels Hørbye; Voie, Per Erlend Torbergsen; Winther, Ole;

    2016-01-01

    When using artificial neural networks in methods for dynamic analysis of slender structures, the computational effort associated with time-domain response simulation may be reduced drastically compared to classic solution strategies. This article demonstrates that the network structure...... of an artificial neural network, which has been trained to simulate forces in a mooring line of a floating offshore platform, can be optimized and reduced by different optimization procedures. The procedures both detect and prune the least salient network weights successively, and besides trimming the network......, they also can be used to rank the importance of the various network inputs. The dynamic response of slender marine structures often depends on several external load components, and by applying the optimization procedures to a trained artificial neural network, it is possible to classify the external force...

  15. On the possibility of the in-cell molecular motors working as cargo moorings only

    CERN Document Server

    Lisowski, Bartosz

    2012-01-01

    Although active transport is considered the most efficient way of depositing materials in the appropriate compartments within living cells, free diffusion remains the energetically cheapest and most widespread determinant of the in-cell dynamics. Here we investigate the hypothesis of cargoes - vesicles or organelles - being transported by the means of free diffusion, limited spatially by the molecular motors. Routinely navigating through ever-changing and unsteady environment, utilizing chemical energy (e.g. from hydrolyzing ATP), as the result they transport cell's crucial components, such as neurotransmitters and organelles. In our model the motor, which we identify with kinesin-1 walking along the microtubule, tethers the cargo in the same manner as a mooring rope attached to a bollard holds a ship from drifting toward the open sea. We study the model behavior in the context of optical trap single molecule experiments, mimicking their procedures in our simulations and investigate how the mechanical propert...

  16. Corrosion analysis in mooring chain links; Analise de corrosao em elos de amarras

    Energy Technology Data Exchange (ETDEWEB)

    Leal, Silvia N.; Pereira, Marcos V. [Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil). Dept. de Ciencia dos Materiais e Metalurgia; Costa, Luis C. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas; Motta, Sergio H. [Brasilamarras - Companhia Brasileira de Amarras, Niteroi, RJ (Brazil)

    2004-07-01

    The purpose of this work was to characterize the localized corrosion phenomenon in the weld region of offshore mooring chain links type ORQ. In this sense, a number of chain links were selected after finishing their projected life time without corrosion signs (chains without corrosion) as well as chain links which showed a reduced life time caused by localized corrosion (chains with corrosion). In the sequence, electrochemistry tests evaluated the corrosion susceptibility of the different regions of the weld joint. The results showed that the heat affected zone concerning the chains with corrosion was the anodic region, with high corrosion rate, while the same region on the not corroded chains was the cathodic one, with low corrosion rate. (author)

  17. A new species of the genus Parasa Moore (Lepidoptera: Limacodidae) from Yemen.

    Science.gov (United States)

    Solovyev, Alexey V; Saldaitis, Aidas

    2010-01-01

    A new species Parasa dusii Solovyev and Saldaitis from northern Yemen is described (holotype in Museum Witt, Munich; Germany). The species has tendency to lose the green pigment typical for other congeners. It is provisionally placed into the genus Parasa Moore, 1859 where it is closely related to P. divisa West, 1940, P. catori Bethune-Baker, 1911, P. marginata West, 1940, P. thamia Rungs, 1951, P. dentina Hering, 1932, P. ananii Karsch, 1896, and P. semiochracea Hering, 1933. The relationship of the new species to these African species suggests its secondary penetration into the Arabian Peninsula from an origin in tropical Africa. The problems of monophyly of the genus Parasa and several associated genera are briefly discussed. All important characters of the new species, and some related species, are illustrated. PMID:21265613

  18. Artificial Neural Networks for Reducing Computational Effort in Active Truncated Model Testing of Mooring Lines

    DEFF Research Database (Denmark)

    Christiansen, Niels Hørbye; Voie, Per Erlend Torbergsen; Høgsberg, Jan Becker

    2015-01-01

    simultaneously, this method is very demanding in terms of numerical efficiency and computational power. Therefore, this method has not yet proved to be feasible. It has recently been shown how a hybrid method combining classical numerical models and artificial neural networks (ANN) can provide a dramatic...... model. Hence, in principal it is possible to achieve reliable experimental data for much larger water depths than what the actual depth of the test basin would suggest. However, since the computations must be faster than real time, as the numerical simulations and the physical experiment run...... reduction in computational effort when performing time domain simulation of mooring lines. The hybrid method uses a classical numerical model to generate simulation data, which are then subsequently used to train the ANN. After successful training the ANN is able to take over the simulation at a speed two...

  19. Insights from a 3-D temperature sensors mooring on stratified ocean turbulence

    Science.gov (United States)

    Haren, Hans; Cimatoribus, Andrea A.; Cyr, Frédéric; Gostiaux, Louis

    2016-05-01

    A unique small-scale 3-D mooring array has been designed consisting of five parallel lines, 100 m long and 4 m apart, and holding up to 550 high-resolution temperature sensors. It is built for quantitative studies on the evolution of stratified turbulence by internal wave breaking in geophysical flows at scales which go beyond that of a laboratory. Here we present measurements from above a steep slope of Mount Josephine, NE Atlantic where internal wave breaking occurs regularly. Vertical and horizontal coherence spectra show an aspect ratio of 0.25-0.5 near the buoyancy frequency, evidencing anisotropy. At higher frequencies, the transition to isotropy (aspect ratio of 1) is found within the inertial subrange. Above the continuous turbulence spectrum in this subrange, isolated peaks are visible that locally increase the spectral width, in contrast with open ocean spectra. Their energy levels are found to be proportional to the tidal energy level.

  20. Moore-Gibson-Thompson equation with memory, part I: exponential decay of energy

    Science.gov (United States)

    Lasiecka, Irena; Wang, Xiaojun

    2016-04-01

    We are interested in the Moore-Gibson-Thompson equation with memory τ{u}_{ttt}+ α u_{tt}+c2Au+bAu_t -int_0tg(t-s)A w(s){d}s=0. This model arises in high-frequency ultrasound applications accounting for thermal flux and molecular relaxation times. According to revisited extended irreversible thermodynamics, thermal flux relaxation leads to the third-order derivative in time while molecular relaxation leads to non-local effects governed by memory terms. The resulting model is of hyperbolic type with viscous effects. We first classify the memory into three types. Then, we study how a memory term creates damping mechanism and how the memory causes energy decay even in the cases when the original memoryless system is unstable.

  1. Conceptual design and numerical simulations of a vertical axis water turbine used for underwater mooring platforms

    Science.gov (United States)

    Wenlong, Tian; Baowei, Song; Zhaoyong, Mao

    2013-12-01

    Energy is a direct restriction to the working life of an underwater mooring platform (UMP). In this paper, a vertical axis water turbine (VAWT) is designed to supply energy for UMPs. The VAWT has several controlled blades, which can be opened or closed by inside plunger pumps. Two-dimensional transient numerical studies are presented to determine the operating performance and power output of the turbine under low ocean current velocity. A standard k-ɛ turbulence model is used to perform the transient simulations. The influence of structural parameters, including foil section profile, foil chord length and rotor diameter, on the turbine performance are investigated over a range of tipspeed- ratios ( TSRs ). It was found that turbine with three unit length NACA0015 foils generated a maximum averaged coefficient of power, 0.1, at TSR = 2.

  2. Synthesis of subnanometer-diameter vertically aligned single-walled carbon nanotubes with copper-anchored cobalt catalysts.

    Science.gov (United States)

    Cui, Kehang; Kumamoto, Akihito; Xiang, Rong; An, Hua; Wang, Benjamin; Inoue, Taiki; Chiashi, Shohei; Ikuhara, Yuichi; Maruyama, Shigeo

    2016-01-21

    We synthesize vertically aligned single-walled carbon nanotubes (VA-SWNTs) with subnanometer diameters on quartz (and SiO2/Si) substrates by alcohol CVD using Cu-anchored Co catalysts. The uniform VA-SWNTs with a nanotube diameter of 1 nm are synthesized at a CVD temperature of 800 °C and have a thickness of several tens of μm. The diameter of SWNTs was reduced to 0.75 nm at 650 °C with the G/D ratio maintained above 24. Scanning transmission electron microscopy energy-dispersive X-ray spectroscopy (EDS-STEM) and high angle annular dark field (HAADF-STEM) imaging of the Co/Cu bimetallic catalyst system showed that Co catalysts were captured and anchored by adjacent Cu nanoparticles, and thus were prevented from coalescing into a larger size, which contributed to the small diameter of SWNTs. The correlation between the catalyst size and the SWNT diameter was experimentally clarified. The subnanometer-diameter and high-quality SWNTs are expected to pave the way to replace silicon for next-generation optoelectronic and photovoltaic devices. PMID:26690843

  3. An Instrument for Autonomous Measurement of the CO2 System in Seawater via Moored Deployments

    Science.gov (United States)

    Martin, W. R.; Sayles, F. L.; McCorkle, D. C.

    2011-12-01

    Recent study of the oceanic uptake of CO2 and its consequences for chemical balances in seawater have made clear the need for continuous, autonomous measurements of the CO2 system. RATS (the Robotic Analyzer for the TCO2 system in Seawater) has been developed to fill that need for mooring-based measurements. The instrument combines conductimetric measurement of TCO2 with spectrophotometric pH measurement for calculation of CO2 speciation. The TCO2/ pH pair of analyses permits precise calculation of both pCO2 (for air-sea exchange studies) and the saturation state of seawater with respect to carbonate minerals (for studies of the effect of ocean acidification on calcifying organisms). Operating under battery power, RATS can perform a total of 800 analyses at intervals of 1.5-hours or more for deployments of up to 8 months. Field tests have shown that TCO2 can be measured over a 6-week interval with precision and accuracy of +/- 3.5 micromol/kg. The recently rebuilt pH system has been shown in the laboratory to have precision of +/- 0.001 pH units and accuracy of +/- 0.005 or better; this performance was sustained over a 2-month test period. The new pH system and TCO2 will be tested in the field in the fall of 2011; tests will include detailed comparison of RATS with discrete, laboratory-based measurements of the CO2 system. RATS is a low-power, mooring-based instrument that meets the needs for the study of CO2 cycling in the surface ocean.

  4. The vegetative development of Sinningia leucotricha Hoehne (Moore under different levels of shading

    Directory of Open Access Journals (Sweden)

    Lilian Keiko Unemoto

    2010-02-01

    Full Text Available This work aimed at the assessment of the influence of different levels of shading in the development of (Sinningia leucotricha Hoehne (Moore. Tuberous roots of 2.3 ± 0.3 cm in diameter were used as vegetative material. The cultivation was performed in plastic vases and gross sand as substrate, and conditioned in sheltered nurseries protected by black polypropylene nets in the followings percentages: 0% (under full sunlight, 50, 60, and 70%. Sheltered nurseries with 60 or 70% of shading presented the highest vegetative development for Brazilian edelweiss. The cultivation of this species under full sunlight is not recommended.A rainha-do-abismo (Sinningia leucotricha Hoehne (Moore é uma planta nativa do Estado do Paraná, se destaca pela beleza de suas folhas de aspecto prateado. Este trabalho teve como objetivo avaliar a influência de diferentes níveis de sombreamento no desenvolvimento de plantas de rainha-do-abismo. Para o experimento foram utilizadas como material vegetativo raízes tuberosas com 2,3 ± 0,3 cm de diâmetro. O cultivo foi realizado em vasos plásticos e areia grossa como substrato, que foram acondicionados em viveiros protegidos com tela de polipropileno de coloração preta, nas seguintes porcentagens: 0% (a pleno sol 50%, 60% e 70%. Viveiros protegidos com 60% ou 70% de sombreamento foram os que proporcionaram maior desenvolvimento vegetativo de rainha-do-abismo. O cultivo desta espécie a pleno sol não é recomendado.

  5. Preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge are described. Static per-formance of this new type of bridge is discussed. Compared with fully self-anchored cable-stayed bridge, its advantages in fin-ished state are summarized. Based on numerical calculation, effects of several structural parameters on static performance are presented.

  6. Structural models of the membrane anchors of envelope glycoproteins E1 and E2 from pestiviruses

    International Nuclear Information System (INIS)

    The membrane anchors of viral envelope proteins play essential roles in cell entry. Recent crystal structures of the ectodomain of envelope protein E2 from a pestivirus suggest that E2 belongs to a novel structural class of membrane fusion machinery. Based on geometric constraints from the E2 structures, we generated atomic models of the E1 and E2 membrane anchors using computational approaches. The E1 anchor contains two amphipathic perimembrane helices and one transmembrane helix; the E2 anchor contains a short helical hairpin stabilized in the membrane by an arginine residue, similar to flaviviruses. A pair of histidine residues in the E2 ectodomain may participate in pH sensing. The proposed atomic models point to Cys987 in E2 as the site of disulfide bond linkage with E1 to form E1–E2 heterodimers. The membrane anchor models provide structural constraints for the disulfide bonding pattern and overall backbone conformation of the E1 ectodomain. - Highlights: • Structures of pestivirus E2 proteins impose constraints on E1, E2 membrane anchors. • Atomic models of the E1 and E2 membrane anchors were generated in silico. • A “snorkeling” arginine completes the short helical hairpin in the E2 membrane anchor. • Roles in pH sensing and E1–E2 disulfide bond formation are proposed for E1 residues. • Implications for E1 ectodomain structure and disulfide bonding pattern are discussed

  7. An Anchor-Based Pedestrian Navigation Approach Using Only Inertial Sensors.

    Science.gov (United States)

    Gu, Yang; Song, Qian; Li, Yanghuan; Ma, Ming; Zhou, Zhimin

    2016-01-01

    In inertial-based pedestrian navigation, anchors can effectively compensate the positioning errors originating from deviations of Inertial Measurement Units (IMUs), by putting constraints on pedestrians' motions. However, these anchors often need to be deployed beforehand, which can greatly increase system complexity, rendering it unsuitable for emergency response missions. In this paper, we propose an anchor-based pedestrian navigation approach without any additional sensors. The anchors are defined as the intersection points of perpendicular corridors and are considered characteristics of building structures. In contrast to these real anchors, virtual anchors are extracted from the pedestrian's trajectory and are considered as observations of real anchors, which can accordingly be regarded as inferred building structure characteristics. Then a Rao-Blackwellized particle filter (RBPF) is used to solve the joint estimation of positions (trajectory) and maps (anchors) problem. Compared with other building structure-based methods, our method has two advantages. The assumption on building structure is minimum and valid in most cases. Even if the assumption does not stand, the method will not lead to positioning failure. Several real-scenario experiments are conducted to validate the effectiveness and robustness of the proposed method. PMID:26959031

  8. Model test of anchoring effect on zonal disintegration in deep surrounding rock masses.

    Science.gov (United States)

    Chen, Xu-Guang; Zhang, Qiang-Yong; Wang, Yuan; Liu, De-Jun; Zhang, Ning

    2013-01-01

    The deep rock masses show a different mechanical behavior compared with the shallow rock masses. They are classified into alternating fractured and intact zones during the excavation, which is known as zonal disintegration. Such phenomenon is a great disaster and will induce the different excavation and anchoring methodology. In this study, a 3D geomechanics model test was conducted to research the anchoring effect of zonal disintegration. The model was constructed with anchoring in a half and nonanchoring in the other half, to compare with each other. The optical extensometer and optical sensor were adopted to measure the displacement and strain changing law in the model test. The displacement laws of the deep surrounding rocks were obtained and found to be nonmonotonic versus the distance to the periphery. Zonal disintegration occurs in the area without anchoring and did not occur in the model under anchoring condition. By contrasting the phenomenon, the anchor effect of restraining zonal disintegration was revealed. And the formation condition of zonal disintegration was decided. In the procedure of tunnel excavation, the anchor strain was found to be alternation in tension and compression. It indicates that anchor will show the nonmonotonic law during suppressing the zonal disintegration. PMID:23997683

  9. The glycosylphosphatidylinositol-anchored protein repertoire of babesia bovis and its significance for erythrocyte invasion

    Science.gov (United States)

    Glycosylphosphatidyl-anchored proteins are particularly abundant on the surface of pathogenic protozoans and might play an important role for parasite survival. In the present work the relevance of GPI-anchored proteins for erythrocyte invasion of Babesia bovis, one of the tick-transmitted causative...

  10. Unintended anchors: Building rating systems and energy performance goals for U.S. buildings

    International Nuclear Information System (INIS)

    In the U.S., where buildings account for 40% of energy use, commercial buildings use more energy per unit area than ever before. However, exemplary buildings demonstrate the feasibility of much better energy performance at no additional first cost. This research examines one possible explanation for this inconsistency. The aim is to investigate whether the anchoring bias, which refers to our tendency to gravitate towards a pre-defined standard regardless of its relevance, influences energy performance goals in building design. The scope examines professionals who help set energy performance goals for U.S. buildings. Prior to being asked to set an energy performance goal, these professionals were randomly directed to one of three series of questions. One series set an anchor of 90% energy reduction beyond standard practice, one set a 30% anchor, and one set no anchor. Respondents exposed to the 90% anchor, and respondents exposed to no anchor at all, set higher energy performance goals than respondents exposed to the 30% anchor. These results suggest that building rating systems that only reward incremental energy improvements may inadvertently create anchors, thereby discouraging more advanced energy performance goals and inhibiting energy performance that is technically and economically feasible.

  11. Structural models of the membrane anchors of envelope glycoproteins E1 and E2 from pestiviruses

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Jimin, E-mail: jimin.wang@yale.edu; Li, Yue; Modis, Yorgo, E-mail: yorgo.modis@yale.edu

    2014-04-15

    The membrane anchors of viral envelope proteins play essential roles in cell entry. Recent crystal structures of the ectodomain of envelope protein E2 from a pestivirus suggest that E2 belongs to a novel structural class of membrane fusion machinery. Based on geometric constraints from the E2 structures, we generated atomic models of the E1 and E2 membrane anchors using computational approaches. The E1 anchor contains two amphipathic perimembrane helices and one transmembrane helix; the E2 anchor contains a short helical hairpin stabilized in the membrane by an arginine residue, similar to flaviviruses. A pair of histidine residues in the E2 ectodomain may participate in pH sensing. The proposed atomic models point to Cys987 in E2 as the site of disulfide bond linkage with E1 to form E1–E2 heterodimers. The membrane anchor models provide structural constraints for the disulfide bonding pattern and overall backbone conformation of the E1 ectodomain. - Highlights: • Structures of pestivirus E2 proteins impose constraints on E1, E2 membrane anchors. • Atomic models of the E1 and E2 membrane anchors were generated in silico. • A “snorkeling” arginine completes the short helical hairpin in the E2 membrane anchor. • Roles in pH sensing and E1–E2 disulfide bond formation are proposed for E1 residues. • Implications for E1 ectodomain structure and disulfide bonding pattern are discussed.

  12. Analysis on the anchor mechanism of the full length resin bolt

    Institute of Scientific and Technical Information of China (English)

    宋彦波; 刘洪涛

    2003-01-01

    The purpose of this paper is to reveal the stress distribution characteristic along the full length anchor bolt. Based on the mechanic model set up, the author calculated the anchor mechanism of the full length resin rock-bolt. The stress distribution characteristic is different according to different type of surrounding-rock. The conclusion is important to optimize the roadway bolt support design.

  13. MODIFICATION OF PALLADIUM METALLIC CATALYST WITH POLYMER-ANCHORED THIOETHER LIGANDS

    Institute of Scientific and Technical Information of China (English)

    LIU Hanfan; MAO Guoping

    1993-01-01

    A well-dispersed metallic palladium catalyst modified by polymer-anchored thioether ligands was used for the hydrogenation of cyclopentadiene to cyclopentene with high activity and selectivity in ambient condition. The evidences to show the modification of catalytic properties by polymer anchored ligands were given.

  14. Model for ion confinement in a hot-electron tandem mirror anchor

    International Nuclear Information System (INIS)

    Anisotropic, hot electrons trapped in local minimum-B wells have been proposed as MHD-stabilizing anchors to an otherwise axisymmetric tandem configuration. This work describes a model for plasma confinement between the anchors and the remainder of the system and calcuates the power loss implied by maintenance of this plasma

  15. Thermal anchoring of wires in large scale superconducting coil test experiment

    International Nuclear Information System (INIS)

    Highlights: • We addressed how thermal anchoring in large scale coil test is different compare to small cryogenic apparatus? • We did precise estimation of thermal anchoring length at 77 K and 4.2 K heat sink in large scale superconducting coil test experiment. • We addressed, the quality of anchoring without covering entire wires using Kapton/Teflon tape. • We obtained excellent results in temperature measurement without using GE Varnish by doubling estimated anchoring length. -- Abstract: Effective and precise thermal anchoring of wires in cryogenic experiment is mandatory to measure temperature in milikelvin accuracy and to avoid unnecessary cooling power due to additional heat conduction from room temperature (RT) to operating temperature (OT) through potential, field, displacement and stress measurement instrumentation wires. Instrumentation wires used in large scale superconducting coil test experiments are different compare to cryogenic apparatus in terms of unique construction and overall diameter/area due to errorless measurement in large time-varying magnetic field compare to small cryogenic apparatus, often shielded wires are used. Hence, along with other variables, anchoring techniques and required thermal anchoring length are entirely different in this experiment compare to cryogenic apparatus. In present paper, estimation of thermal anchoring length of five different types of instrumentation wires used in coils test campaign at Institute for Plasma Research (IPR), India has been discussed and some temperature measurement results of coils test campaign have been presented

  16. Grapnel stone anchors from Saurashtra: Remnants of Indo-Arab trade on the Indian coast

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Tripati, S.

    used as indications of ancient trade routes and sizes of boats. Marine archaeological investigations have brought to light a large number of stone anchors occurring along the Indian coast. One of the important type is grapnel anchor which has been cut...

  17. An Indo-Arabian type of stone anchor from Kannur, Kerala,west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Manikfan, A.; Mohamed, M.

    has revealed an Indo-Arabian type of stone anchor at Hydross Palli Mosque near the beach of Kannur (Cannanore) city of Kerala. The anchor is lying on the southeast corner of the mosque and buried on the ground. Historical records mention...

  18. Atividade analgésica do extrato da Pectis jangadensis (S. Moore Preliminary evaluation of Pectis jangadensis (S. Moore analgesic activity

    Directory of Open Access Journals (Sweden)

    Caroline C. Soares

    2009-03-01

    Full Text Available A planta Pectis jangadensis, popularmente conhecida como "roxinha", "erva do carregador" ou "coentro da chapada" é utilizada em chás pela população matogrossense, como calmante. Não há estudo na literatura sobre qualquer atividade farmacológica dessa planta. Nosso objetivo foi avaliar atividade analgésica de seu extrato hidro-alcoólico nas doses de 100, 500 e 1000 mg/kg pelos métodos de Contorções induzidas pelo ácido acético e teste da formalina. Os nossos resultados demonstram que não houve diferença significativa entre o grupo controle e os grupos tratados com diferentes doses do extrato tanto em relação ao número de contorções induzidas pelo ácido acético quanto ao tempo de lambedura da pata, na fase 1 e 2, induzida pela formalina. Portanto, pelo menos, por via oral, parece que o extrato hidro-alcoólico da Pectis jangadensis não apresenta atividade analgésica."Preliminary evaluation of Pectis jangadensis (S. Moore analgesic activity's". The plant Pectis jangadensis, popularly known as "roxinha", "erva do carregador" or "coentro da chapada" is used in teas by the matogrossense's people, as a calmative. There isn't any study in the literature about its pharmacologic activity. Our object was to evaluate its extract hidroalcoolic analgesic activity in doses of 100, 500 and 1000 mg/kg by the methods of abdominal writhing induced by acetic acid and the Formalin test. The results show that there wasn't significant difference between the control groups and the groups treated with different doses of the extract in both testes. Therefore, at least by oral, seems that the Pectis jangadensis' hidroalcoolic extract doesn't have analgesic activity.

  19. Associative Self-Anchoring Interacts with Obtainability of Chosen Objects

    Science.gov (United States)

    Prévost, Charlotte; Bolger, Niall; Mobbs, Dean

    2016-01-01

    While there is evidence that implicit self-esteem transfers to chosen objects (associative self-anchoring), it is still unknown whether this phenomenon extends to explicit self-esteem. Moreover, whether the knowledge that these objects might belong to the self in the future or not affects the evaluation of these objects has received little attention. Here, we demonstrate that evaluations of chosen objects are further enhanced when they are obtainable as compared to when they are not in participants with high explicit self-esteem, whereas participants with low explicit self-esteem exhibit the opposite pattern. These findings extend previous results and shed new light on the role of self-esteem in altering preferences for chosen objects depending on their obtainability. PMID:26913011

  20. Robust conductance of dumbbell molecular junctions with fullerene anchoring groups

    DEFF Research Database (Denmark)

    Markussen, Troels; Settnes, Mikkel; Thygesen, Kristian Sommer

    2011-01-01

    The conductance of a molecular wire connected to metallic electrodes is known to be sensitive to the atomic structure of the molecule-metal contact. This contact is to a large extent determined by the anchoring group linking the molecular wire to the metal. It has been found experimentally...... against variations in the detailed bonding geometry and in good agreement with the experimental value of G= 3 × 10-4G0. Electron tunneling across the molecular bridge occurs via the lowest unoccupied orbitals of C60 which are pinned close to the Fermi energy due to partial charge transfer. Our findings...... support the original motivation to achieve conductance values more stable towards changes in the structure of the molecule-metal contact leading to larger reproducibility in experiments. © 2011 American Institute of Physics....

  1. Structural basis for membrane anchoring of HIV-1 envelope spike.

    Science.gov (United States)

    Dev, Jyoti; Park, Donghyun; Fu, Qingshan; Chen, Jia; Ha, Heather Jiwon; Ghantous, Fadi; Herrmann, Tobias; Chang, Weiting; Liu, Zhijun; Frey, Gary; Seaman, Michael S; Chen, Bing; Chou, James J

    2016-07-01

    HIV-1 envelope spike (Env) is a type I membrane protein that mediates viral entry. We used nuclear magnetic resonance to determine an atomic structure of the transmembrane (TM) domain of HIV-1 Env reconstituted in bicelles that mimic a lipid bilayer. The TM forms a well-ordered trimer that protects a conserved membrane-embedded arginine. An amino-terminal coiled-coil and a carboxyl-terminal hydrophilic core stabilize the trimer. Individual mutations of conserved residues did not disrupt the TM trimer and minimally affected membrane fusion and infectivity. Major changes in the hydrophilic core, however, altered the antibody sensitivity of Env. These results show how a TM domain anchors, stabilizes, and modulates a viral envelope spike and suggest that its influence on Env conformation is an important consideration for HIV-1 immunogen design. PMID:27338706

  2. Phosphatidylinositol anchor of HeLa cell alkaline phosphatase

    International Nuclear Information System (INIS)

    Alkaline phosphatase from cancer cells, HeLa TCRC-1, was biosynthetically labeled with either 3H-fatty acids or [3H]ethanolamine as analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and fluorography of immunoprecipitated material. Phosphatidylinositol-specific phospholipase C (PI-PLC) released a substantial proportion of the 3H-fatty acid label from immunoaffinity-purified alkaline phosphatase but had no effect on the radioactivity of [3H]ethanolamine-labeled material. PI-PLC also liberated catalytically active alkaline phosphatase from viable cells, and this could be selectively blocked by monoclonal antibodies to alkaline phosphatase. However, the alkaline phosphatase released from 3H-fatty acid labeled cells by PI-PLC was not radioactive. By contrast, treatment with bromelain removed both the 3H-fatty acid and the [3H]ethanolamine label from purified alkaline phosphatase. Subtilisin was also able to remove the [3H]ethanolamine label from the purified alkaline phosphatase. The 3H radioactivity in alkaline phosphatase purified from [3H]ethanolamine-labeled cells comigrated with authentic [3H]ethanolamine by anion-exchange chromatography after acid hydrolysis. The data suggest that the 3H-fatty acid and [3H]ethanolamine are covalently attached to the carboxyl-terminal segment since bromelain and subtilisin both release alkaline phosphatase from the membrane by cleavage at that end of the polypeptide chain. The data are consistent with findings for other proteins recently shown to be anchored in the membrane through a glycosylphosphatidylinositol structure and indicate that a similar structure contributes to the membrane anchoring of alkaline phosphatase

  3. Phosphatidylinositol anchor of HeLa cell alkaline phosphatase

    Energy Technology Data Exchange (ETDEWEB)

    Jemmerson, R.; Low, M.G.

    1987-09-08

    Alkaline phosphatase from cancer cells, HeLa TCRC-1, was biosynthetically labeled with either /sup 3/H-fatty acids or (/sup 3/H)ethanolamine as analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and fluorography of immunoprecipitated material. Phosphatidylinositol-specific phospholipase C (PI-PLC) released a substantial proportion of the /sup 3/H-fatty acid label from immunoaffinity-purified alkaline phosphatase but had no effect on the radioactivity of (/sup 3/H)ethanolamine-labeled material. PI-PLC also liberated catalytically active alkaline phosphatase from viable cells, and this could be selectively blocked by monoclonal antibodies to alkaline phosphatase. However, the alkaline phosphatase released from /sup 3/H-fatty acid labeled cells by PI-PLC was not radioactive. By contrast, treatment with bromelain removed both the /sup 3/H-fatty acid and the (/sup 3/H)ethanolamine label from purified alkaline phosphatase. Subtilisin was also able to remove the (/sup 3/H)ethanolamine label from the purified alkaline phosphatase. The /sup 3/H radioactivity in alkaline phosphatase purified from (/sup 3/H)ethanolamine-labeled cells comigrated with authentic (/sup 3/H)ethanolamine by anion-exchange chromatography after acid hydrolysis. The data suggest that the /sup 3/H-fatty acid and (/sup 3/H)ethanolamine are covalently attached to the carboxyl-terminal segment since bromelain and subtilisin both release alkaline phosphatase from the membrane by cleavage at that end of the polypeptide chain. The data are consistent with findings for other proteins recently shown to be anchored in the membrane through a glycosylphosphatidylinositol structure and indicate that a similar structure contributes to the membrane anchoring of alkaline phosphatase.

  4. Functionalized Nanostructures: Redox-Active Porphyrin Anchors for Supramolecular DNA Assemblies

    KAUST Repository

    Börjesson, Karl

    2010-09-28

    We have synthesized and studied a supramolecular system comprising a 39-mer DNA with porphyrin-modified thymidine nucleosides anchored to the surface of large unilamellar vesicles (liposomes). Liposome porphyrin binding characteristics, such as orientation, strength, homogeneity, and binding site size, was determined, suggesting that the porphyrin is well suited as a photophysical and redox-active lipid anchor, in comparison to the inert cholesterol anchor commonly used today. Furthermore, the binding characteristics and hybridization capabilities were studied as a function of anchor size and number of anchoring points, properties that are of importance for our future plans to use the addressability of these redox-active nodes in larger DNA-based nanoconstructs. Electron transfer from photoexcited porphyrin to a lipophilic benzoquinone residing in the lipid membrane was characterized by steady-state and time-resolved fluorescence and verified by femtosecond transient absorption. © 2010 American Chemical Society.

  5. Capillary and anchoring effects in thin hybrid nematic films and connection with bulk behavior.

    Science.gov (United States)

    de las Heras, D; Mederos, Luis; Velasco, Enrique

    2009-01-01

    By means of a molecular model, we examine hybrid nematic films with antagonistic anchoring angles where one of the surfaces is in the strong anchoring regime. If anchoring at the other surface is weak, and in the absence of wetting by the isotropic phase, the anchoring transition may interact with the capillary isotropic-nematic transition. For general anchoring conditions on this surface we confirm the existence of the steplike biaxial phase and the associated transition to the linear constant-tilt-rotation, configuration. The steplike phase is connected with the bulk isotropic phase for increasing film thickness so that the latter transition is to be interpreted as the capillary isotropic-nematic transition in a hybrid film. PMID:19257057

  6. Procedural debiasing of primacy/anchoring effects in clinical-like judgments.

    Science.gov (United States)

    Mumma, G H; Wilson, S B

    1995-11-01

    Primacy (or anchoring) effects in clinical judgment occur when information presented at an early stage unduly influences a judgment compared to the effect of the same information presented at a later stage. Using recent theoretical models of these effects, three debiasing methods were developed and tested for their efficacy. Contrary to some recent failures to find anchoring effects, both single-cue and sequence anchoring manipulations produced medium-size effects on personality trait ratings and generalized to predictions of behavior. A consider-the-opposite procedure that involved cue sorting by diagnosticity debiased single-cue anchoring, but comparable results were obtained by subjects who simply took notes while reviewing each cue prior to judgment. Bias inoculation was marginally successful at reducing single-cue anchoring. Methodological issues as well as suggestions for future research are discussed. PMID:8778134

  7. Vibration Characteristic of Anchoring System of Bolt and Elastic Wave Propagation Law

    Institute of Scientific and Technical Information of China (English)

    WANG Cheng; LI Yi; NING Jian-guo; LIN Hua-chang

    2006-01-01

    Based on one-dimension wave theory, the propagation law of elastic wave along the rock bolt, rock medium and their coupling system are researched, and the attenuation law and propagation mechanism of wave in the anchoring system are obtained. Meanwhile, the studies on end reflection and dynamic response under load are also carried out experimentally, the relationship between anchoring length and excited wave length is obtained when the end reflection of bolt emerges, and it is concluded that under the condition of bolt loaded,as the load increases, the reflection of the upper interface of anchoring segment weakens while the end reflection strengthens relatively, hence the energy attenuation increases. These results provide some important theory basis for measuring the effective anchoring length of bolt, judging the bonding quality of anchoring end and surrounding rock, and estimating the utmost load force of bolt.

  8. Assessment of behavior, design and testing of anchors for fastening to concrete

    International Nuclear Information System (INIS)

    This report presents the evaluation of behavior and the prediction of tensile capacity of anchors that fail concrete, as the design basis for anchorage. Tests of cast-in place headed anchors, domestically manufactured and installed in uncracked, unreinforced concrete were performed to investigate the behavior of single anchors and multiple anchors with the consideration of various embedment lengths and edge distances. The failure mode and the load-deformation response of these anchors are discussed and the concrete failure data then compared with capacities by the two exiting methods : the 45 degree cone method of ACI 349, appendix B and the Concrete Capacity Design (CCD) method. Discrepancies between the test results and these two prediction methods are assessed and also the basic differences in philosophy and the factors contributing to the philosophical differences in these two methods are addressed

  9. Anomalous length dependence of conductance of aromatic nanoribbons with amine anchoring groups

    KAUST Repository

    Bilić, Ante

    2012-09-06

    Two sets of aromatic nanoribbons, based around a common hexagonal scaffolding, with single and dual terminal amine groups have been considered as potential molecular wires in a junction formed by gold leads. Charge transport through the two-terminal device has been modeled using density functional theory (with and without self-interaction correction) and the nonequilibrium Green\\'s function method. The effects of wire length, multiple terminal contacts, and pathways across the junction have been investigated. For nanoribbons with the oligopyrene motif and conventional single amine terminal groups, an increase in the wire length causes an exponential drop in the conductance. In contrast, for the nanoribbons with the oligoperylene motif and dual amine anchoring groups the predicted conductance rises with the wire length over the whole range of investigated lengths. Only when the effects of self-interaction correction are taken into account, the conductance of the oligoperylene ribbons exhibits saturation for longer members of the series. The oligoperylene nanoribbons, with dual amine groups at both terminals, show the potential to fully harness the highly conjugated system of π molecular orbitals across the junction. © 2012 American Physical Society.

  10. Microfluidic Device

    Science.gov (United States)

    Tai, Yu-Chong (Inventor); Zheng, Siyang (Inventor); Lin, Jeffrey Chun-Hui (Inventor); Kasdan, Harvey L. (Inventor)

    2016-01-01

    Described herein are particular embodiments relating to a microfluidic device that may be utilized for cell sensing, counting, and/or sorting. Particular aspects relate to a microfabricated device that is capable of differentiating single cell types from dense cell populations. One particular embodiment relates a device and methods of using the same for sensing, counting, and/or sorting leukocytes from whole, undiluted blood samples.

  11. Movable MEMS Devices on Flexible Silicon

    KAUST Repository

    Ahmed, Sally

    2013-05-05

    Flexible electronics have gained great attention recently. Applications such as flexible displays, artificial skin and health monitoring devices are a few examples of this technology. Looking closely at the components of these devices, although MEMS actuators and sensors can play critical role to extend the application areas of flexible electronics, fabricating movable MEMS devices on flexible substrates is highly challenging. Therefore, this thesis reports a process for fabricating free standing and movable MEMS devices on flexible silicon substrates; MEMS flexure thermal actuators have been fabricated to illustrate the viability of the process. Flexure thermal actuators consist of two arms: a thin hot arm and a wide cold arm separated by a small air gap; the arms are anchored to the substrate from one end and connected to each other from the other end. The actuator design has been modified by adding etch holes in the anchors to suit the process of releasing a thin layer of silicon from the bulk silicon substrate. Selecting materials that are compatible with the release process was challenging. Moreover, difficulties were faced in the fabrication process development; for example, the structural layer of the devices was partially etched during silicon release although it was protected by aluminum oxide which is not attacked by the releasing gas . Furthermore, the thin arm of the thermal actuator was thinned during the fabrication process but optimizing the patterning and etching steps of the structural layer successfully solved this problem. Simulation was carried out to compare the performance of the original and the modified designs for the thermal actuators and to study stress and temperature distribution across a device. A fabricated thermal actuator with a 250 μm long hot arm and a 225 μm long cold arm separated by a 3 μm gap produced a deflection of 3 μm before silicon release, however, the fabrication process must be optimized to obtain fully functioning

  12. Stone anchors along the coast of Chilika Lake: New light on the maritime activities of Orissa, India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Patnaik, A.P.

    various parts of India. Kanas is the first instance where stone anchors have been found along with hero stones. This communication deals with stone anchors of Kanas and their role in the maritime activities of Chilika Lake region....

  13. Suture locking of isolated internal locking knotless suture anchors is not affected by bone quality

    Directory of Open Access Journals (Sweden)

    Woodmass JM

    2015-06-01

    Full Text Available Jarret M Woodmass,1 Graeme Matthewson,1 Yohei Ono,1,2 Aaron J Bois,1 Richard S Boorman,1 Ian KY Lo,1 Gail M Thornton1,31Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada; 2Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan; 3Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada Purpose: The purpose of this study was to evaluate the mechanical performance of different suture locking mechanisms including: i interference fit between the anchor and the bone (eg, 4.5 mm PushLock, 5.5 mm SwiveLock, ii internal locking mechanism within the anchor itself (eg, 5.5 mm SpeedScrew, or iii a combination of interference fit and internal locking (eg, 4.5 mm MultiFIX P, 5.5 mm MultiFIX S. Methods: Anchors were tested in foam blocks representing normal (20/8 foam or osteopenic (8/8 foam bone, using standard suture loops pulled in-line with the anchor to isolate suture locking. Mechanical testing included cyclic testing for 500 cycles from 10 N to 60 N at 60 mm/min, followed by failure testing at 60 mm/min. Displacement after 500 cycles at 60 N, number of cycles at 3 mm displacement, load at 3 mm displacement, and maximum load were evaluated. Results: Comparing 8/8 foam to 20/8 foam, load at 3 mm displacement and maximum load were significantly decreased (P<0.05 with decreased bone quality for anchors that, even in part, relied on an interference fit suture locking mechanism (ie, 4.5 mm PushLock, 5.5 mm SwiveLock, 4.5 mm MultiFIX P, 5.5 mm MultiFIX S. Bone quality did not affect the mechanical performance of 5.5 mm SpeedScrew anchors which have an isolated internal locking mechanism. Conclusion: The mechanical performance of anchors that relied, even in part, on interference fit were affected by bone quality. Isolated internal locking knotless suture anchors functioned independently of bone quality

  14. Career Anchors and the Effects of Downsizing: Implications for Generations and Cultures at Work. A Preliminary Investigation.

    Science.gov (United States)

    Marshall, Verena; Bonner, Dede

    2003-01-01

    The relationships among career anchors, age, culture, gender, employment experience, and the impact of career planning on downsizing were examined with data from 423 management students (49% had been downsized). Lifestyle was the most valued anchor across age groups, stability/security the least; compared with Schein's earlier anchors research,…

  15. ‘Should we not also speak of Art as Magic?’: A Review of Alan Moore and the Gothic Tradition

    Directory of Open Access Journals (Sweden)

    Guillaume Lecomte

    2013-12-01

    Full Text Available A review of 'Alan Moore and the Gothic Tradition' (2013, a collection of 14 articles edited by Matthew J.A. Green and published by Manchester University Press.  Addressed to readers who already have a substantial knowledge on Alan Moore, the reviewed book focuses on the different level of relationship that the English writer maintains with the many layers of the Gothic tradition, and what is the impact of these interactions. From politics to magic, monsters to superheroes, and sex to abject, this review explores how Green's collection tackles all the recurrent themes of Moore's oeuvre.

  16. Actual model test for tensile capacity evaluation of anchor system in NPPs

    International Nuclear Information System (INIS)

    The design of anchor system for fastening the equipments and piping systems, etc. to concrete structure has based on the ACI 349 code in Korean nuclear power plant. But, CCD method of CEB code which was processed in Europe shows that anchor system design according to ACI 349 code has some of overestimated effects in the evaluation of tensile and shear capacity of the anchor system. Furthermore, according to US NRC SRP published in 1996. US NRC recognized that ACI 349 code had some problems for design of anchor system and recommended that anchor system should be designed by test results for each case. In order to identify the validity of both ACI 349 Code and CEB-CCD code for design of anchor system in NPPs. KEPRI is examining a large number of literatures related to this subject and based on the above examination, is carrying out the actual model test considering various test conditions. Among the actual model test, test plan and pretest results related to tensile capacity evaluation of anchor system are shown in this paper

  17. NIOZ high-resolution moored temperature observations: benefits and new challenges.

    Science.gov (United States)

    Cimatoribus, Andrea; Gostiaux, Louis; Cyr, Frederic; van Haren, Hans

    2016-04-01

    The Royal Netherlands Institute for Sea Research has been developing for several years a family of temperature sensors (NIOZ1 to NIOZ5). In the latest iterations of this project, these instruments are precise (10‑3 K or better), have a very low noise level (below 10‑3 K), are relatively fast (sampling rate of 1Hz) and can measure for extended periods of time (several months). Being also compact and lightweight, several thermistors can be attached on a single line at a fine vertical spacing (20cm or more). When mounted on a cable, the instruments are all synchronised to a single clock, thus providing simultaneous measurements throughout the depth range of the mooring (usually in the order of 100m). Recently, the instruments have also been deployed in a group of 5 lines approximately 5m apart from each other, providing a unique view on the three-dimensional temperature field. After almost 10 years of successful deployments at sea, we try to draw some conclusions from this effort, from the scientific and technical point of view. This observational system provides temperature measurements with vertical spatial resolution comparable to that of microstructure profilers, but in comparison to ship-borne systems it offers some distinctive features: providing instantaneous measurements throughout the mooring, observations of waves and overturning structures are not influenced by the time delay between measurements at different depths; the very low noise level and high precision enables the study of the deep, weakly stratified ocean; by using a heavy ballast at the bottom and a high net buoyancy at the top of the mooring, Eulerian measurements are effectively obtained; continuous, high sampling rate Eulerian measurements enable to assess the intermittent, sporadic nature of turbulence and wave activity in the ocean; the large range of time scales included in the observations (100 ‑ 106 s) allows to study a large portion of the turbulence inertial range, the full

  18. Sea-Change in Ocean Observations on Moored Buoys from the National Data Buoy Center (NDBC)

    Science.gov (United States)

    Bouchard, R. H.; Elliott, J.; Pounder, D.; Kern, K.

    2014-12-01

    The presentation will provide the technical specifications, the systems engineering processes, and preliminary results from laboratory and field tests, as the National Data Buoy Center (NDBC) undertakes a fundamental and broad transformation (sea-change) of its ocean observing systems on moored buoys. This transformation is necessary to gain efficiencies in maintaining operational ocean observation networks and to increase their reliability, which will reduce maintenance costs. The presentation will also compare and contrast existing and planned systems. The Self-Contained Ocean Observations Payload (SCOOP) takes advantage of the advances in communications and small, efficient, multi-purpose sensors to reduce the size and costs of systems and expand the suite of available real-time ocean observations. The communications will allow NDBC to increase the precision and decrease the latency of the observations. The hallmark of SCOOP is the modularity of the payloads that allow NDBC to host specialized systems, for the oceanographic research community, which may include observing ocean acidification and algal blooms, and tracking marine life, alongside its standard suite of meteorological, oceanographic, and wave systems. SCOOP will include cameras, primarily to document vandalism incidents, but they can also serve to corroborate many of the automatic observations. The two-year integration project - focused on recapitalization of NDBC's network of Hurricane Weather buoys - is aided by NDBC's 40 years of experience with marine observations and its continually improving approach to testing. Testimony to the rigor of NDBC's development and test procedures is that the World Meteorological Organization and the Intergovernmental Ocean Commission have designated NDBC as the first Regional Marine Instrumentation Center (RMIC). Integral to the fielding of these new systems is a Mission Control Center (MCC) performing the real-time, specialized monitoring and analyses and

  19. Text analysis devices, articles of manufacture, and text analysis methods

    Science.gov (United States)

    Turner, Alan E; Hetzler, Elizabeth G; Nakamura, Grant C

    2013-05-28

    Text analysis devices, articles of manufacture, and text analysis methods are described according to some aspects. In one aspect, a text analysis device includes processing circuitry configured to analyze initial text to generate a measurement basis usable in analysis of subsequent text, wherein the measurement basis comprises a plurality of measurement features from the initial text, a plurality of dimension anchors from the initial text and a plurality of associations of the measurement features with the dimension anchors, and wherein the processing circuitry is configured to access a viewpoint indicative of a perspective of interest of a user with respect to the analysis of the subsequent text, and wherein the processing circuitry is configured to use the viewpoint to generate the measurement basis.

  20. Evaluating the Potential for Marine and Hydrokinetic Devices to Act as Artificial Reefs or Fish Aggregating Devices. Based on Analysis of Surrogates in Tropical, Subtropical, and Temperate U.S. West Coast and Hawaiian Coastal Waters

    Energy Technology Data Exchange (ETDEWEB)

    Kramer, Sharon H. [H. T. Harvey & Associates, Honolulu, HI (United States); Hamilton, Christine D. [H. T. Harvey & Associates, Honolulu, HI (United States); Spencer, Gregory C. [H. T. Harvey & Associates, Honolulu, HI (United States); Ogston, Heather O. [H. T. Harvey & Associates, Honolulu, HI (United States)

    2015-05-12

    Wave energy converters (WECs) and tidal energy converters (TECs) are only beginning to be deployed along the U.S. West Coast and in Hawai‘i, and a better understanding of their ecological effects on fish, particularly on special-status fish (e.g., threatened and endangered) is needed to facilitate project design and environmental permitting. The structures of WECs and TECs placed on to the seabed, such as anchors and foundations, may function as artificial reefs that attract reef-associated fishes, while the midwater and surface structures, such as mooring lines, buoys, and wave or tidal power devices, may function as fish aggregating devices (FADs), forming the nuclei for groups of fishes. Little is known about the potential for WECs and TECs to function as artificial reefs and FADs in coastal waters of the U.S. West Coast and Hawai‘i. We evaluated these potential ecological interactions by reviewing relevant information about fish associations with surrogate structures, such as artificial reefs, natural reefs, kelps, floating debris, oil and gas platforms, marine debris, anchored FADs deployed to enhance fishing opportunities, net-cages used for mariculture, and piers and docks. Based on our review, we postulate that the structures of WECs and TECs placed on or near the seabed in coastal waters of the U.S. West Coast and Hawai‘i likely will function as small-scale artificial reefs and attract potentially high densities of reef-associated fishes (including special-status rockfish species [Sebastes spp.] along the mainland), and that the midwater and surface structures of WECs placed in the tropical waters of Hawai‘i likely will function as de facto FADs with species assemblages varying by distance from shore and deployment depth. Along the U.S. West Coast, frequent associations with midwater and surface structures may be less likely: juvenile, semipelagic, kelp-associated rockfishes may occur at midwater and surface structures of WECs in coastal waters of

  1. Extrusion of bone anchor suture following flexor digitorum profundus tendon avulsion injury repair.

    LENUS (Irish Health Repository)

    Tiong, William H C

    2011-09-01

    Flexor digitorum profundus (FDP) zone I tendon avulsion injury is traditionally repaired with a pullout suture technique. More recently, bone anchor sutures have been used as a viable alternative and have largely replaced areas in hand surgery where pullout suture technique was once required. To date, there have been very few complications reported related to bone anchor suture use in FDP tendon reattachment to the bone. We report a very unusual case of extrusion of bone anchor through the nailbed, 6 years after zone I FDP tendon avulsion injury repair and a brief review of literature.

  2. Rock engineering design of post-tensioned anchors for dams – A review

    OpenAIRE

    Brown, E.T.

    2015-01-01

    High-capacity, post-tensioned anchors have found wide-spread use, originally in initial dam design and construction, and more recently in the strengthening and rehabilitation of concrete dams to meet modern design and safety standards. Despite the advances that have been made in rock mechanics and rock engineering during the last 80 years in which post-tensioned anchors have been used in dam engineering, some aspects of the rock engineering design of high-capacity rock anchors for dams have c...

  3. Behavior of pre-stress group anchors--Theory approach and model

    Institute of Scientific and Technical Information of China (English)

    HE Siming; WANG Chenghua; QIAO Jianping

    2003-01-01

    First of all the pre-stress group anchor ropes are resolved into two sub-systems: the stable rock stand lateral resistance load and inner bonding section stand lateral resistance load and pre-stress load. Then, discretization of every sub-system was carried on and it is assumed that different micro-sections possess uniform distribution side resistance. On the basis of Mindlin stress solution, stress overlay principle, modified layered-summation method as well as the load transfer method, we study the anchor group effect and present a theory model which calculates the anchor group effect and establishes the relevant iterate standard.

  4. Pull-out behavior of CFRP single-strap ground anchors

    OpenAIRE

    Fan, Haifeng; Keller, Thomas; Vassilopoulos, Anastasios

    2016-01-01

    Pull-out experiments were performed on four carbon fiber-reinforced polymer (CFRP) ground anchors simulating their applications in rock and soil. The CFRP tendons used in these anchors comprise a single-strap end on both the ground and air sides. On the ground side, the single-strap end is embedded in a cylinder of high-strength grout which fits into the borehole. In rock applications, the ground-side anchor can be used directly without additional confinement, while in the case of soil, an ad...

  5. Thermonuclear device

    International Nuclear Information System (INIS)

    Purpose: To provide a thermonuclear device which causes the thermal expansion of a vacuum vessel to freely escape without refraining and is provided with a vacuum vessel having an excellently large rigidity against an electromagnetic force transiently acting whils retaining a predetermined position. Constitution: The device for supporting the vacuum vessel comprises piston cylinder means in which a pressurized fluid is sealed in cylinder chambers at both sides of a piston and with which these cylinder chambers are liquidly communicated through throttling means, and means for fixing any of the piston and the cylinder of said piston cylinder means to a bed-plate retaining the support device and another to the vacuum vessel. The vacuum vessel is retained through a connecting rod or the like connected to the cylinder of the support device. (Aizawa, K.)

  6. Handedness found in a wild group of moor monkeys in the Karaenta Nature Reserve, South Sulawesi, Indonesia

    Directory of Open Access Journals (Sweden)

    Kunio WATANABE

    2010-04-01

    Full Text Available Hand preference of wild moor monkeys Macaca maurus was investigated in food reaching situations at the Karaenta Nature Reserve, South Sulawesi, Indonesia. The frequency picking up sweet-corn grains to take into the mouth by either hand of monkeys was counted directly at the feeding ground where sweet-corn grains were scattered for monkeys. Among the 20 monkeys examined, 8 were right-handed, 8 were left-handed, and 4 were ambilateral. The results indicated the prevailed hand preference on individual level but not either trends of left- or right-hand preference on population level. The trend toward a higher proportion of left-handed monkeys found in Japanese and rhesus monkeys was not found. Some other characteristics found in moor monkeys are discussed in comparison with those previous findings in Japanese and Tibetan macaques in order to evaluate variations within the genus Macaca [Current Zoology 56 (2: 209–212, 2010

  7. Optical variability and pigment biomass in the Sargasso Sea as determined using deep-sea optical mooring data

    Science.gov (United States)

    Smith, R. C.; Waters, K. J.; Baker, K. S.

    1991-01-01

    A 9-month time series of optical data, composed of three separate deployments, from the Biowatt 1987 deep-sea mooring located in the oligotrophic waters of the Sargasso Sea at 32 deg N, 70 deg W, is presented. These data were analyzed using several biooptical models for the purpose of providing a continuous estimate of the spectral diffuse attenuation coefficient and pigment biomass. Results of the first 70-day deployment demonstrate the utility of optical observations as proxy measures of biological parameters, and facilitate a preliminary analysis of the temporal variations and a comparison of the present biooptical observations with concurrent physical observations. Biooptical properties exhibit variation in response to physical forcings, such as diel variations of incident solar irradiance, episodic wind forcing, advective mesoscale eddy layer depth, and succession of phytoplankton. The mooring data are discussed in the context of contemporaneous shipboard observations as well as in terms of future ocean satellite observations.

  8. Concentric waves and short-period oscillations observed in the ionosphere after the 2013 Moore EF5 tornado

    Science.gov (United States)

    Nishioka, Michi; Tsugawa, Takuya; Kubota, Minoru; Ishii, Mamoru

    2013-11-01

    We detected clear concentric waves and short-period oscillations in the ionosphere after an Enhanced Fujita scale (EF)5 tornado hit Moore, Oklahoma, U.S., on 20 May 2013 using dense wide-coverage ionospheric total electron content (TEC) observations in North America. These concentric waves were nondispersive, with a horizontal wavelength of ~120 km and a period of ~13 min. They were observed for more than 7 h throughout North America. TEC oscillations with a period of ~4 min were also observed to the south of Moore for more than 8 h. A comparison between the TEC observations and infrared cloud image from the GOES satellite indicates that the concentric waves and short-period oscillations are caused by supercell-induced atmospheric gravity waves and acoustic resonances, respectively. This observational result provides the first clear evidence of a severe meteorological event causing atmospheric waves propagating upward in the upper atmosphere and reaching the ionosphere.

  9. Peptide Anchor for Folate-Targeted Liposomal Delivery.

    Science.gov (United States)

    Nogueira, Eugénia; Mangialavori, Irene C; Loureiro, Ana; Azoia, Nuno G; Sárria, Marisa P; Nogueira, Patrícia; Freitas, Jaime; Härmark, Johan; Shimanovich, Ulyana; Rollett, Alexandra; Lacroix, Ghislaine; Bernardes, Gonçalo J L; Guebitz, Georg; Hebert, Hans; Moreira, Alexandra; Carmo, Alexandre M; Rossi, Juan Pablo F C; Gomes, Andreia C; Preto, Ana; Cavaco-Paulo, Artur

    2015-09-14

    Specific folate receptors are abundantly overexpressed in chronically activated macrophages and in most cancer cells. Directed folate receptor targeting using liposomes is usually achieved using folate linked to a phospholipid or cholesterol anchor. This link is formed using a large spacer like polyethylene glycol. Here, we report an innovative strategy for targeted liposome delivery that uses a hydrophobic fragment of surfactant protein D linked to folate. Our proposed spacer is a small 4 amino acid residue linker. The peptide conjugate inserts deeply into the lipid bilayer without affecting liposomal integrity, with high stability and specificity. To compare the drug delivery potential of both liposomal targeting systems, we encapsulated the nuclear dye Hoechst 34580. The eventual increase in blue fluorescence would only be detectable upon liposome disruption, leading to specific binding of this dye to DNA. Our delivery system was proven to be more efficient (2-fold) in Caco-2 cells than classic systems where the folate moiety is linked to liposomes by polyethylene glycol. PMID:26241560

  10. Econophysical anchoring of unimodal power-law distributions

    International Nuclear Information System (INIS)

    The sciences are abundant with size distributions whose densities have a unimodal shape and power-law tails both at zero and at infinity. The quintessential examples of such unimodal and power-law (UPL) distributions are the sizes of income and wealth in human societies. While the tails of UPL distributions are precisely quantified by their corresponding power-law exponents, their bulks are only qualitatively characterized as unimodal. Consequently, different statistical models of UPL distributions exist, the most popular considering lognormal bulks. In this paper we present a general econophysical framework for UPL distributions termed ‘the anchoring method’. This method: (i) universally approximates UPL distributions via three ‘anchors’ set at zero, at infinity, and at an intermediate point between zero and infinity (e.g. the mode); (ii) is highly versatile and broadly applicable; (iii) encompasses the existing statistical models of UPL distributions as special cases; (iv) facilitates the introduction of new statistical models of UPL distributions and (v) yields a socioeconophysical analysis of UPL distributions. (paper)

  11. High performance supercapacitors using metal oxide anchored graphene nanosheet electrodes

    KAUST Repository

    Baby, Rakhi Raghavan

    2011-01-01

    Metal oxide nanoparticles were chemically anchored onto graphene nanosheets (GNs) and the resultant composites - SnO2/GNs, MnO2/GNs and RuO2/GNs (58% of GNs loading) - coated over conductive carbon fabric substrates were successfully used as supercapacitor electrodes. The results showed that the incorporation of metal oxide nanoparticles improved the capacitive performance of GNs due to a combination of the effect of spacers and redox reactions. The specific capacitance values (with respect to the composite mass) obtained for SnO2/GNs (195 F g-1) and RuO 2/GNs (365 F g-1) composites at a scan rate of 20 mV s-1 in the present study are the best ones reported to date for a two electrode configuration. The resultant supercapacitors also exhibited high values for maximum energy (27.6, 33.1 and 50.6 W h kg-1) and power densities (15.9, 20.4 and 31.2 kW kg-1) for SnO2/GNs, MnO2/GNs and RuO2/GNs respectively. These findings demonstrate the importance and great potential of metal oxide/GNs based composite coated carbon fabric in the development of high-performance energy-storage systems. © 2011 The Royal Society of Chemistry.

  12. Ferroelectric devices

    CERN Document Server

    Uchino, Kenji

    2009-01-01

    Updating its bestselling predecessor, Ferroelectric Devices, Second Edition assesses the last decade of developments-and setbacks-in the commercialization of ferroelectricity. Field pioneer and esteemed author Uchino provides insight into why this relatively nascent and interdisciplinary process has failed so far without a systematic accumulation of fundamental knowledge regarding materials and device development.Filling the informational void, this collection of information reviews state-of-the-art research and development trends reflecting nano and optical technologies, environmental regulat

  13. Current direction, temperature, and conductivity data from moored current meter casts in the North Pacific Ocean from 29 April 1981 - 02 December 1981 (NODC Accession 8300030)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Current direction, temperature, and conductivity data were collected using moored current meter casts in the North Pacific Ocean from April 29, 1981 to December 2,...

  14. Salinity and sigma-t data from moored current meter and CTD casts in the North Pacific Ocean from 26 August 1979 - 07 June 1982 (NODC Accession 8200146)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Salinity and sigma-t data were collected using moored current meter and CTD casts in the North Pacific Ocean from August 26, 1979 to June 7, 1982. Data were...

  15. Current direction and CTD data from moored current meter and CTD casts in the Delaware Bay from 01 January 1984 - 01 December 1984 (NODC Accession 8600001)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Current direction and CTD data were collected using moored current meter and CTD casts in the Delaware Bay from January 1, 1984 to December 1, 1985. Data were...

  16. Current direction and CTD data from moored current meter and CTD casts in the Atlantic Ocean from 04 August 1980 - 14 August 1981 (NODC Accession 8200240)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Current direction and CTD data were collected using moored current meter and CTD casts in the Atlantic Ocean from August 4, 1980 to August 14, 1981. Data were...

  17. Current meter and temperature profile data from moored current meter casts in the TOGA area - Atlantic Ocean from 10 September 1970 - 27 October 1980 (NODC Accession 8600320)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Current meter and temperature profile data were collected using moored current meter - PCM casts in the TOGA area - Atlantic Ocean from September 10, 1970 to...

  18. WATER TEMPERATURE, HYDROSTATIC PRESSURE, and other data collected from MOORINGS in Labrador Sea from 2007-09-26 to 2009-09-27 (NCEI Accession 0134851)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Mooring data collected with SeaBird MicroCAT SBE37s, Aanderra RCMs, and Submerged Autonomous Launch Platform (SALP) by the Woods Hole Oceanographic Institution in...

  19. Seawater temperature and salinity moored time-series records, collected during 2010 and 2011 in Vieques Sound and Virgin Passage (NODC Accession 0077910)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Sea-Bird SBE37SM MicroCat Conductivity/Temperature (CT) recorders were deployed between March 2010 and April 2011 on shallow water moorings located in Vieques...

  20. Salinity data from moored current meter casts in the Northeast Pacific Ocean, Bering Sea, and Gulf of Alaska from 03 October 1984 - 01 May 1988 (NODC Accession 8900056)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Salinity data were collected using moored current meter casts in the North Pacific Ocean, Bering Sea, and Gulf of Alaska from October 3, 1984 to May 1, 1988. Data...