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Dai Xiaojun - - 2014
Catalyzed by Ru(bpy)3(BF4)2, the photoredox coupling of tertiary amines with acrylate derivatives including Baylis-Hillman adducts under visible light irritation was successfully established. The scope of the substrates was broad and thus an array of γ-aminobutyric ester derivatives was obtained in moderate to good yields.
Silva Emanuelle B F EB Departamento de Biologia Molecular, Universidade Federal da Paraíba, João Pessoa, Brazil. Electronic address: - - 2013
Furocumarins (FCs) are photoactive compounds capable of binding to DNA, and once excited by UVA light (∼365nm), they form photoadducts which can lead to mutagenicity and lethality. However, the biological effects of FCs combined with UVB light (312nm) is still little investigated. In the present study, the lethal effect of ...
Zhuang Hong - - 2013
Four replications were conducted to compare quality measurements, cook loss, shear force, and sensory quality attributes of cooked boneless skinless white meat, broiler breast fillets (pectoralis major) prepared directly from a frozen state or prepared from a thawed state. In each replication, fresh broiler fillets (removed from carcasses 6-8 h ...
Karabay Oguz - - 2013
To investigate the frequency of nasal Helicobacter pylori carriage among cooks living in Bolu, Ardahan and Sakarya province of Turkey. A total of 54 cooks (10 from Bolu, 29 from Ardahan and 15 from Sakarya) were enrolled. Nasal Helicobacter was tested using polymerase chain reaction. Helicobacter pylori was detected in ...
De Flora Silvio - - 2013
The light delivered by artificial illumination systems, and in particular by halogen quartz bulbs, contains UVA, UVB, and UVC radiation, is genotoxic to both bacterial and human cells and is potently carcinogenic to hairless mice. Since IARC has classified UV radiation in Group 1, any source of UV light poses ...
Chang Audrey Chingzu - - 2013
Nitrate, nitrite and ascorbic acid (vitamin C) concentrations were determined for spinach (Spinacia oleracea L.) over a 24h period to determine if light intensity (including dark periods) at time of harvest impacts concentrations in raw vegetables. Nitrate, nitrate and ascorbic acid concentrations varied significantly over the 24h period and appeared ...
Ward Michael D - - 2012
Many naturally occurring systems show us how multi-component supramolecular assemblies can generate useful functional behaviour. In this article the problems and limitations associated with achieving such behaviour in artificial multi-component assemblies is discussed, together with two examples of functions in artificial supramolecular assemblies based on (i) host-guest chemistry in cavities ...
Perrinet Laurent U - - 2012
In low-level sensory systems, it is still unclear how the noisy information collected locally by neurons may give rise to a coherent global percept. This is well demonstrated for the detection of motion in the aperture problem: as luminance of an elongated line is symmetrical along its axis, tangential velocity ...
Isen Joshua D - - 2012
Literature suggests that reduced electrodermal reactivity (EDR) is related to externalizing problems. However, the genetic and environmental etiology of this association is unknown. Using a standard habituation paradigm, we measured responses to 15 loud tones in four cohorts of adolescent twins (N = 2,129). We quantified EDR as the average size of ...
Hall Alex R - - 2012
An influential ecological theory, the intermediate disturbance hypothesis (IDH), predicts that intermediate levels of disturbance will maximize species diversity. Empirical studies, however, have described a wide variety of diversity-disturbance relationships (DDRs). Using experimental populations of microbes, we show that the form of the DDR depends on an interaction between disturbance ...
Senigaglia Valeria - - 2012
Synchronized swimming in cetaceans has been hypothesised to play a role in affiliative processes as well as anti-predatory responses. We compared observed variation in synchronised swimming at two research sites in relation to disturbance exposure to test these two hypotheses. This study describes and quantifies pair synchronization in long-finned pilot ...
Gulfishan Mohd - - 2012
Seeds of Capsicum annuum L. var. G4 were subjected to different concentrations of methyl methane sulphonate (MMS) and diethyl sulphate (DES). The effects of different mutagenic treatments on meiosis, chiasma frequency, and pollen fertility have been studied in M1 generation. Various types of meiotic aberrations such as univalent, multivalent, stickiness, ...
Carvalho Livia S - - 2012
The peak sensitivities (λ(max)) of the short-wavelength-sensitive-1 (SWS1) pigments in mammals range from the ultraviolet (UV) (360-400 nm) to the violet (400-450 nm) regions of the spectrum. In most cases, a UV or violet peak is determined by the residue present at site 86, with Phe conferring UV sensitivity (UVS) ...
Torre Kjerstin - - 2011
We address the complex relationship between the stability, variability, and adaptability of psychological systems by decomposing the global variance of serial performance into two independent parts: the local variance (LV) and the serial correlation structure. For two time series with equal LV, the presence of persistent long-range correlations (or 1/ƒβ ...
Iskhakov Timur Sh - - 2011
The preparation of completely nonpolarized light is seemingly easy; an everyday example is sunlight. The task is much more difficult if light has to be in a pure quantum state, as required by most quantum-technology applications. The pure quantum states of light obtained so far are either polarized or, in ...
Mandal Soumen - - 2011
Noise filtering is an essential part for measurement of quantum phenomena at extremely low temperatures. Here, we present the design of a filter which can be installed in space constrained cryogenic environment containing a large number of signal carrying lines. Our filters have a -3 db point of 65 kHz ...
Eto Yujiro - - 2011
We experimentally demonstrate transporting continuous quantum variables of individual light pulses at telecommunication wavelengths by using continuous-variable Bell measurements and post-processing displacement techniques. Time-domain pulsed homodyne detectors are used in the Bell measurements and the quantum variables of input light are transported pulse-by-pulse. Fidelity of <i>F</i> = 0.57±0.03 is experimentally ...
Schäfer Karina Vera Rosa - - 2011
Stomatal conductance controls carbon and water fluxes in forest ecosystems. Therefore, its accurate characterization in land-surface flux models is necessary. Sap-flux scaled canopy conductance was used to evaluate the effect of drought, disturbance, and mortality of three oak species (Quercus prinus, Q. velutina, and Q. coccinea) in an upland oak/pine ...
Dudin Y O - - 2010
Entanglement of a 795 nm light polarization qubit and an atomic Rb spin-wave qubit for a storage time of 0.1 s is observed by measuring the violation of Bell's inequality (S=2.65±0.12). Long qubit storage times are achieved by pinning the spin wave in a 1064 nm wavelength optical lattice, with ...
Hegele Mathias - - 2010
Concurrent adaptation to two different visuomotor transformations has been shown to be possible as long as discriminative contextual cues are available. The authors examined explicit and implicit components of visually cued dual adaptation in younger and older adults. They found that only young adults, but not old adults, produced appropriate ...
Cheong Raymond R Department of Biomedical Engineering, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218, - - 2010
Oscillatory processes in biological signal transduction have come under progressively increasing scrutiny in terms of their functional significance and mechanisms of emergence and regulation. Since oscillatory processes can be a by-product of rapid adaptation and can also easily emerge if the feedback underlying adaptive processes is inadvertently artificially enhanced, one ...
Pimenta W M - - 2010
We report minimal quantum state tomography with spatial qubits created by a pair of parametric down converted twin-photons passing through a double-slit. A novel experimental setup is used, which includes a Spatial Light Modulator, as a fundamental tool, to reconstruct the state density matrix. The theory needed to perform a ...
Strambi Angela - - 2010
The implementation of multiconfigurational quantum chemistry methods into a quantum-mechanics/molecular-mechanics protocol has allowed the construction of a realistic computer model for the sensory rhodopsin of the cyanobacterium Anabaena PCC 7120. The model, which reproduces the absorption spectra of both the all-trans and 13-cis forms of the protein and their associated ...
Simpson Sara Ann - - 2011
Patients with homonymous hemianopia have altered visual search patterns, but it is unclear how rapidly this develops and whether it reflects a strategic adaptation to altered perception or plastic changes to tissue damage. To study the temporal dynamics of adaptation alone, we used a gaze-contingent display to simulate left or ...
Tanaka Hirokazu H National Institute of Information and Communications Technology (NiCT), Hikaridai 2-2-2, Keihanna Science City, Kyoto 619-0288, - - 2011
Timing is critical in determining the causal relationship between two events. Motor adaptation relies on the timing of actions and their results for determining which preceding control signals were responsible for subsequent error in the resulting movements. An artificially induced temporal delay in error feedback as short as 50 ms ...
Benda Jan - - 2010
Spike-frequency adaptation is a prominent aspect of neuronal dynamics that shapes a neuron's signal processing properties on timescales ranging from about 10 ms to >1 s. For integrate-and-fire model neurons spike-frequency adaptation is incorporated either as an adaptation current or as a dynamic firing threshold. Whether a physiologically observed adaptation ...
Maksymov I S - - 2010
A novel metal-coated nanocylinder-cavity architecture fully compatible with III-V GaInAs technology and benefiting from a broad spectral range enhancement of the local density of states is proposed as an integrated source of nonclassical light. Because of a judicious selection of the mode volume, the cavity combines good collection efficiency (≈45%), ...
Yang Hua - - 2011
Adaptation to a visual pattern can alter the sensitivities of neuronal populations encoding the pattern. However, the functional roles of adaptation, especially in high-level vision, are still equivocal. In the present study, we performed three experiments to investigate if face gender adaptation could affect gender discrimination. Experiments 1 and 2 ...
St George Rebecca J RJ Neuroscience Research Australia, Barker Street, Randwick, NSW 2031, Australia. - - 2011
A fundamental concern of the brain is to establish the spatial relationship between self and the world to allow purposeful action. Response adaptation to unvarying sensory stimuli is a common feature of neural processing, both peripherally and centrally. For the semicircular canals, peripheral adaptation of the canal-cupula system to constant ...
Kloth Nadine - - 2010
The perception of facial gender has been found to be adaptively recalibrated: adaptation to male faces causes participants to perceive subsequent faces as more feminine and vice versa [Webster, M. A., Kaping, D., Mizokami, Y., & Duhamel, P. Adaptation to natural facial categories. Nature, 428, 557-561, 2004]. In an event-related ...
Ziegler Lucia - - 2010
The structure of the environment determines patterns of signal degradation and attenuation, potentially affecting communication. The expected adjustment in call structure improving signal transmission in an environment was formalized in the acoustic adaptation hypothesis. Within this framework, most studies considered anuran calls as fixed attributes determined by local adaptations. However, ...
Stanton Neville A - - 2011
This paper reports on the design and evaluation of in-car displays used to support Stop & Go Adaptive Cruise Control. Stop & Go Adaptive Cruise Control is an extension of Adaptive Cruise Control, as it is able to bring the vehicle to a complete stop. Previous versions of Adaptive Cruise ...
Tian Jing J Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA. - - 2010
When environmental or sensory conditions change suddenly, the brain must be capable of learning different behavioral modes to produce accurate movements under multiple circumstances. A form of this dual-state adaptation known as "context-specific adaptation" has been widely investigated using the saccade gain adaptation paradigm in humans. In this study, we ...
Watanabe Junji - - 2010
In the visual modality adaptation to high temporal frequency can result in spatially localized apparent duration compression. The principal point of adaptation is thought to be early in the visual system, at which point temporal information is encoded within sustained (parvocellular) and transient (magnocellular) channels. Here, we investigate whether the ...
Pritchard Jonathan K - - 2010
There has been recent progress in identifying selective sweeps underlying a range of adaptations. Jonathan Pritchard and Anna Di Rienzo argue that many adaptive events in natural populations may occur by polygenic adaptation, which would largely go undetected by conventional methods for detecting selection.
Nasiri Mojtaba - - 2010
We study a nanoscale system composed of one corrugated cylinder (pinion) and one corrugated plate (rack). The pinion and rack have no mechanical contact, but are coupled via the lateral Casimir force. We consider the case where the rack position versus time is a periodic triangular signal. We find that ...
Berquin Anne D - - 2010
Quantitative sensory testing with Semmes-Weinstein monofilaments suffers from several pitfalls. Our aims were to assess the reliability of these filaments for touch-pressure threshold detection, develop and validate a rapid and accurate procedure for measurements at the bedside, and establish normative data. After calibration of the monofilaments, an adaptive staircase algorithm ...
Hatori Megumi - - 2010
The adaptation of behavior and physiology to changes in the ambient light level is of crucial importance to life. These adaptations include the light modulation of neuroendocrine function and temporal alignment of physiology and behavior to the day:night cycle by the circadian clock. These non-image-forming (NIF) responses can function independent ...
Burkhardt Alex - - 2010
In two experiments we determined the electrophysiological substrates of figural aftereffects in face adaptation using compressed and expanded faces. In Experiment 1, subjects viewed a series of compressed and expanded faces. Results demonstrated that distortion systematically modulated the peak amplitude of the P250 event-related potential (ERP) component. As the amount ...
Frank Marion E - - 2010
Identification of odors of compounds introduced into changeable olfactory environments is the essence of olfactory coding, which focuses perception on the latest stimulus with the greatest salience. Effects of stimulus intensity and adapting time on mixture component identification after adapting with one component were each studied in 10 human subjects. ...
Ratcliffe John M JM Center for Sound Communication, Institute of Biology, University of Southern Denmark, 5230 Odense M, Denmark. - - 2011
Moths and butterflies flying in search of mates risk detection by numerous aerial predators; under the cover of night, the greatest threat will often be from insectivorous bats. During such encounters, the toxic dogbane tiger moth, Cycnia tenera uses the received intensity, duration and emission pattern of the bat's echolocation ...
Smith David W - - 2010
In this presentation, we describe a novel method for estimating the onset time course of psychophysical odor adaptation in human observers. The method employs stimulus conditions derived from an analogous stimulus paradigm in audition. To test this procedure, we used liquid-dilution olfactometry to estimate 2-bottle discrimination thresholds for brief (600 ...
Konvalinka Ivana - - 2010
To study the mechanisms of coordination that are fundamental to successful interactions we carried out a joint finger tapping experiment in which pairs of participants were asked to maintain a given beat while synchronizing to an auditory signal coming from the other person or the computer. When both were hearing ...
Sherman D L - - 2010
Injury during routine spinal cord procedures could result in devastating consequences for the surgical patient. Spinal cord monitoring through somatosensory evoked potentials (SEPs) remains a viable method for prevention of serious injury. The adaptive coherence estimation (ACE) is a method to iteratively calculate signal match quality through successive filter entrainment. ...
Zilany Muhammad S A MS Department of Biomedical Engineering, University of Rochester, Rochester, New York 14642, USA. - - 2010
Neurons in the auditory system respond to recent stimulus-level history by adapting their response functions according to the statistics of the stimulus, partially alleviating the so-called "dynamic-range problem." However, the mechanism and source of this adaptation along the auditory pathway remain unknown. Inclusion of power-law dynamics in a phenomenological model ...
van Steenbergen Henk - - 2010
van Steenbergen, Henk, Band, Guido P.H., & Hommel, Bernhard. (2009). Reward Counteracts Conflict Adaptation: Evidence for a Role of Affect in Executive Control. Psychological Science, 20(12), 1473-1477. (Original DOI: 10.1111/j.1467-9280.2009.02470.x) An error in the BIS/BAS scale calculation resulted in the incorrect publication of a reversed score and correlation. To represent ...
Tack Ayco J M - - 2010
The adaptive deme formation hypothesis states that plant-feeding insects may adapt to individual host plants. To date, no empirical study has examined the strength of such adaptations from a spatially explicit perspective. In this study, we quantify local adaptation of six specialist insect species at multiple sites, predicting that spatial ...
Jones Benedict C - - 2010
We investigated the effects of adaptation to mouth shapes associated with different spoken sounds (sustained /m/ or /u/) on visual perception of lip speech. Participants were significantly more likely to label ambiguous faces on an /m/-to-/u/ continuum as saying /u/ following adaptation to /m/ mouth shapes than they were in ...
Nijboer Tanja C W - - 2011
The aim of the current study was to investigate long-term effects in spatial awareness after daily exposure to prism adaptation during three months in a patient with hemispatial neglect. Results showed improvement in the detection of stimuli in the contralesional visual field, as measured with perimetry, in the contralesional visual ...
Dash Suryadeep S Center for Neurology, Hertie Institute for Clinical Brain Research, Department of Cognitive Neurology, University of Tübingen, Hoppe-Seyler-Str. 3, 72076, Tübingen, - - 2010
Contemporary theories of the cerebellum hold that the complex spike (CS) fired by cerebellar Purkinje cells (PCs) reports the error signal essential for motor adaptation, i.e., the CS serves as a teacher reducing the performance error. This hypothesis suggests a monotonic relationship between CS modulation and performance error: the modulation ...
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