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Smith Victoria M VM Department of Psychology, University of Calgary, Calgary, AB, Canada; Hotchkiss Brain Institute, University of Calgary, Calgary, AB, - - 2014
Serotonergic drugs modify circadian responses to light, with agonists attenuating and some partial agonists or antagonists potentiating photic phase shifts. The anxiolytic buspirone is a 5-HT1A receptor partial agonist. Given that buspirone is used therapeutically to manage generalised anxiety disorder, it would be useful to understand if and how this ...
Angelstorf Judith S JS Hamburg University of Applied Sciences, Hamburg, - - 2014
The increasing use of engineered nanoparticles in industrial and consumer products leads to a release of the anthropogenic contaminants to the aquatic environment. To obtain a better understanding of the environmental effects of these particles, the nematode Caenorhabditis elegans was used to investigate the organism-level effects and in vivo molecular ...
Banerjee Samya S Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India. - - 2014
An oxovanadium(iv) vitamin-B6 Schiff base complex, viz. [VO(HL)(acdppz)]Cl, having (acridinyl)dipyridophenazine (acdppz) shows specific localization to endoplasmic reticulum (ER) and remarkable apoptotic photocytotoxicity in visible light (400-700 nm) in HeLa and MCF-7 cancer cells (IC50 < 0.6 μM) while being non-toxic in the dark and to MCF-10A normal cells (IC50 > ...
Yadav Geeta G Ranjan Plant Physiology and Biochemistry Laboratory, Department of Botany, University of Allahabad (A Central University of India), Allahabad, 211 002, India, - - 2014
The present study is aimed at assessing the extent of arsenic (As) toxicity under three different light intensities-optimum (400 μmole photon m(-2) s(-1)), sub-optimum (225 μmole photon m(-2) s(-1)), and low (75 μmole photon m(-2) s(-1))-exposed to Helianthus annuus L. var. DRSF-113 seedlings by examining various physiological and biochemical parameters. Irrespective of the light intensities under ...
Bio Moses - - 2014
We recently developed "photo-unclick chemistry", a novel chemical tool involving the cleavage of aminoacrylate by singlet oxygen, and demonstrated its application to visible light-activatable prodrugs. In this study, we prepared an advanced multifunctional prodrug, Pc-(L-CA4)2, composed of the fluorescent photosensitizer phthalocyanine (Pc), an SO-labile aminoacrylate linker (L), and a cytotoxic ...
Kim Jungkon J Risk Assessment Division, National Institute of Environmental Research, Incheon 404-708, Republic of Korea; Department of Environmental Health, School of Public Health, Seoul National University, Seoul 151-742, Republic of Korea. Electronic address: - - 2014
The effects of UV-A on the toxicity of TiO2 nano-particles (NPs) were evaluated using Moina macrocopa and Daphnia magna under environmentally relevant level of UV-A. The waterfleas were exposed to TiO2 NPs with different sizes of ~298nm, ~132nm, or ~72nm for up to 48h, with or without UV-A light. Whole ...
Burts Alan O - - 2013
New strategies for the synthesis of multi-functional particles that respond to external stimuli and release biologically relevant agents will enable the discovery of new formulations for drug delivery. In this paper, we combine two powerful methods: brush-first ring-opening metathesis polymerization and copper-catalyzed azide-alkyne cycloaddition click chemistry, for the synthesis of ...
Zou Xiao-Yan - - 2013
The broad application of titanium dioxide nanoparticles (TiO2 NPs) has resulted in the release of substantial quantities of untreated TiO2 NPs into aquatic systems, which serve as the terminal sink for nanomaterials. These TiO2 NPs may induce some unexpected toxic effects to aquatic systems. The objectives of this research were ...
Mochida Koji - - 2013
Most animals advertise their unprofitability to potential predators via conspicuous signals. Whether the strength of this aposematic signal indicates the quality and quantity of chemical defenses in animals is controversial. Here, we investigated the relationship between the conspicuousness of an aposematic signal and toxicity, which likely depends, at least in ...
Zhang Shulin - - 2013
To understand how environmental conditions affect the allelopathic inhibition of toxic Microcystis aeruginosa by berberine, the independent effects of some environmental factors, including temperature, light, and aeration, on the growth and extracellular microcystin (MC) content of M. aeruginosa (FACHB 905) treated with 0.000 and 0.001% (w/v) berberine were investigated. The ...
Shi Junpeng - - 2013
As a result of the extensive application of silver nanoparticles (AgNPs), their potential hazards, once they are released into the natural environment, are of great concern to people. Since silver is very sensitive to light, the toxicity of AgNPs released into the natural environment will be inevitably affected by light. ...
Wang Huili - - 2013
This study evaluated the effects of β-diketone antibiotics (DKAs) on the development of embryo-larval zebrafish (Danio rerio). When exposure to DKAs, developmental malformations, such as hatching delay, curved body axis, pericardial edema, uninflated swim bladder and yolk sac edema, were observed at 120 h postfertilization (hpf). The estimated 120 hpf ...
Dalai Swayamprava - - 2013
The ever increasing industrial and consumer applications of titanium dioxide nanoparticles (TiO2 NPs) raise concern over the possible risk associated with their environmental exposure. Still, the knowledge regarding nanoparticle behavior in a freshwater ecosystem is lacking. The current study focuses on the toxicity of TiO2 NPs towards Ceriodaphnia dubia (a ...
Hoppmann Christian - - 2012
Aggregation of amyloid β (Aβ(1-42) ), causing toxicity, is a critical step in Alzheimer's disease (AD). AD studies are difficult to compare because Aβ(1-42) aggregation is poorly controllable under physiological conditions. To control aggregation and toxicity, we engineered light-switchable Aβ(1-42) analogues that enable controllable conversion of nontoxic fibrils into toxic ...
Doerner Judith - - 2012
OBJECTIVE: To record and compare the frequency of organ penetration after insertion of a Veress needle (VN) in 6 different intercostal spaces (ICS) for creation of pneumoperitoneum in canine cadavers. STUDY DESIGN: Descriptive study. ANIMALS: Canine cadavers (n = 15). METHODS: In 15 cadavers positioned in dorsal recumbency, VN insertion ...
Hovakimyan Marine - - 2012
Collagen cross-linking (CXL) using UVA light and riboflavin (vitamin B2) was introduced as a clinical application to stabilize the cornea by inducing cross-links within and between collagen fibers. CXL has been investigated extensively and has been shown clinically to arrest the progression of keratoconic or post-LASIK ectasia. With its minimal ...
Bennett Samuel W - - 2012
Under many aqueous conditions, metal oxide nanoparticles attract other nanoparticles and grow into fractal aggregates as the result of a balance between electrostatic and Van Der Waals interactions. Although particle coagulation has been studied for over a century, the effect of light on the state of aggregation is not well ...
Yang Jin - - 2012
Vigabatrin (VGB) is a commonly prescribed antiepileptic drug designed to inhibit GABA-transaminase, effectively halting seizures. Unfortunately, VGB treatment is also associated with the highest frequencies of peripheral visual field constriction of any of the antiepileptic drugs and the mechanisms that lead to these visual field defects are uncertain. Recent studies ...
Jacquier-Bret Julien - - 2012
In this work, it is proposed to evaluate the upper-limb movements through a global index of performance borrowed from the field of robotics: the manipulability. For a given posture, this index quantifies the set of velocities that can be achieved at the wrist in all the Cartesian directions. The manipulability ...
Torres-Moreno M - - 2011
The aim of the present work was to study how the information on product labels influences consumer expectations and their acceptance and purchase intention of dark chocolate. Six samples of dark chocolate, varying in brand (premium and store brand) and in type of product (regular dark chocolate, single cocoa origin ...
Mathôt Sebastiaan - - 2011
Mantra is a free and open-source software package for object tracking. It is specifically designed to be used as a tool for response collection in psychological experiments and requires only a computer and a camera (a webcam is sufficient). Mantra is compatible with widely used software for creating psychological experiments. ...
Park Jaebum J Department of Kinesiology, Rec.Hall-39, The Pennsylvania State University, University Park, PA 16802, USA, - - 2012
We used two methods to address two aspects of multi-finger synergies and their changes after fatigue of the index finger. Analytical inverse optimization (ANIO) was used to identify cost functions and corresponding spaces of optimal solutions over a broad range of task parameters. Analysis within the uncontrolled manifold (UCM) hypothesis ...
Domalain Mathieu M Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, - - 2011
To evaluate the impact of proximal interphalangeal (PIP) joint arthrodesis on the kinematics of precision pinch. Eleven healthy subjects performed index finger-thumb pinch motions under 4 conditions: unrestricted thumb and index finger (CONTROL) and fusion of the PIP joint of the index finger in flexion of 30° (PIP30), 40° (PIP40), ...
Kong Yong-Ku - - 2011
The objective of this study was to evaluate individual finger force and contribution to a gripping force, the difference between actual and expected finger forces and subjective discomfort rating at 10 different submaximal voluntary contraction (%MVC) levels (10-100% in 10 increments). Seventy-two participants randomly exerted gripping force with a multi-finger ...
Grepstad Jon Olav - - 2011
Total internal reflection occurs for large angles of incidence, when light is incident from a high-refractive-index medium onto a low-index medium. We consider the situation where the low-index medium is active. By invoking causality in its most fundamental form, we argue that evanescent gain may or may not appear, depending ...
Yavuzoglu Asuman A Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, Ohio 44272, - - 2011
Combination sensitivity in central auditory neurons is a form of spectrotemporal integration in which excitatory responses to sounds at one frequency are facilitated by sounds within a distinctly different frequency band. Combination-sensitive neurons respond selectively to acoustic elements of sonar echoes or social vocalizations. In mustached bats, this response property ...
Park Jaebum - - 2011
The aim of this study was to test the mechanical advantage (MA) hypothesis in multi-finger torque production tasks in humans: fingers with longer moment arms produce greater force magnitudes during torque production tasks. There were eight experimental conditions: two prehension types determined by different mechanical constraints (i.e., fixed- and free-object ...
Wahlberg Magnus - - 2011
The Indian Ocean and Atlantic bottlenose dolphins (Tursiops aduncus and Tursiops truncatus) are among the best studied echolocating toothed whales. However, almost all echolocation studies on bottlenose dolphins have been made with captive animals, and the echolocation signals of free-ranging animals have not been quantified. Here, biosonar source parameters from ...
Ortallono Sam - - 2011
Would a rose sound as sweet? In this presentation, we will explore perception of individual microphones. The same vocalist will be recorded with five different microphones. Volunteers will be presented with two sets of tracks to evaluate. The first set of tracks will be labeled only with letters, microphone A, ...
Chiandetti Cinzia - - 2011
A bias to allocate attention to the left hemispace, similar to the well-known pseudoneglect phenomenon shown by humans, has been recently reported in domestic chicks and other species of birds. Asymmetrical light exposure of the embryo of the domestic chick in a critical period before hatching is known to be ...
Molina Thomas A TA Department of Behavioral Sciences, Rush University Medical Center, Chicago, Illinois 60612, - - 2011
The dim light melatonin onset (DLMO) is the most reliable circadian phase marker in humans, but the cost of assaying samples is relatively high. Therefore, the authors examined differences between DLMOs calculated from hourly versus half-hourly sampling and differences between DLMOs calculated with two recommended thresholds (a fixed threshold of ...
Sheng Xing - - 2011
We developed a high-index-contrast photonic structure for improving the light extraction efficiency of light-emitting diodes (LEDs) by a self-assembly approach. In this approach, a two-dimensional grating can be non-lithographically integrated on the top of virtually any types of LEDs with controlled structural parameters and material indices. As a proof of ...
Wan Qun - - 2011
In this study, we investigated whether there is a repetition benefit in mental rotation that is independent of stimulus repetition (i.e., due to increased efficiency in postencoding processing). Three experiments were conducted, in which different conditions of stimulus repetition (different letters on consecutive trials in Experiment 1, letters of different ...
Kee Dohyung - - 2011
The purpose of this study is to investigate the relationships between subjective measures of discomfort and objective measures related to the assessment of postural stresses based on literature survey. Objective measures included posture holding time, maximum holding time (MHT), torque at joints, lifting index (LI) and compressive force (CF) at ...
Güçlü Burak - - 2011
This study investigated the effects of stimulus modality, standard duration, sex, and laterality in duration discrimination by musicians and nonmusicians. Seventeen musicians (M age = 24.1 yr.) and 22 nonmusicians (M age = 26.8 yr.) participated. Auditory (1,000 Hz) and tactile (250 Hz) sinusoidal suprathreshold stimuli with varying durations were ...
Gharghi Majid - - 2011
We report an invisibility carpet cloak device, which is capable of making an object undetectable by visible light. The cloak is designed using quasi conformal mapping and is fabricated in a silicon nitride waveguide on a specially developed nanoporous silicon oxide substrate with a very low refractive index (n<1.25). The ...
Nguyen T - - 2011
This paper evaluates depth of anaesthesia (DoA) monitoring using a new index. The proposed method preconditions raw EEG data using an adaptive threshold technique to remove spikes and low frequency noise. We also propose an adaptive window length technique to adjust the length of the sliding window. The information pertinent ...
Tudorache Christian - - 2011
Several measures have been developed to quantify swimming performance to understand various aspects of ecology and behaviour, as well as to help design functional applications for fishways and aquaculture. One of those measures, the optimal swimming speed, is the speed at which the cost of transport (COT) is minimal, where ...
Kim Hyo-Jin - - 2011
The contact areas of the articular surfaces in the proximal radioulnar joint (PRUJ) change, depending on the rotational position of the forearm. We investigated the in vivo congruency index of the PRUJ and translational motion of the radial head relative to the lesser sigmoid notch with forearm rotation. Computed tomography ...
Beranek Leo - - 2011
The parameter, "Strength of Sound G" is closely related to loudness. Its magnitude is dependent, inversely, on the total sound absorption in a room. By comparison, the reverberation time (RT) is both inversely related to the total sound absorption in a hall and directly related to its cubic volume. Hence, ...
Hansen Keir T - - 2011
Hansen, KT, Cronin, JB, and Newton, MJ. The reliability of linear position transducer and force plate measurement of explosive force-time variables during a loaded jump squat in elite athletes. J Strength Cond Res 25(5): 1447-1456, 2011-The best method of assessing muscular force qualities during isoinertial stretch shorten cycle lower body ...
Cançado Carlos R X - - 2011
The resurgence of temporal patterns of key pecking by pigeons was investigated in two experiments. In Experiment 1, positively accelerated and linear patterns of responding were established on one key under a discrete-trial multiple fixed-interval variable-interval schedule. Subsequently, only responses on a second key produced reinforcers according to a variable-interval ...
Luo Xunda X College of Optometry, University of Houston, Houston, Texas 77204-2020, - - 2011
To study relationships between glaucoma-sensitive components identified with frequency-domain analysis of global-flash multifocal electroretinogram (mfERG), regional retinal nerve fiber layer thickness (RNFLT), and local visual field sensitivity (VS). Eleven macaque monkeys, including four controls and seven with unilateral laser-induced trabecular meshwork scarification and ocular hypertension, were observed with optical coherence ...
Jia Xiaofeng - - 2011
Acute ambient ozone (O(3)) exposure is associated with the increased mortality and morbidity of cardiovascular diseases. The dysfunction of cardiac autonomic nervous system (ANS), indicated by the disturbed heart rate variability (HRV), may be the most important underlying mechanism. Previous studies reported the heterogeneous associations between O(3) within several hours' ...
Blättler Colin - - 2011
The purpose of this study was to examine the effects of expertise on motion anticipation. We conducted 2 experiments in which novices and expert pilots viewed simulated aircraft landing scenes. The scenes were interrupted by the display of a black screen and then started again after a forward or backward ...
Haywood Nicholas R - - 2011
A sudden change applied to a single component can cause its segregation from an ongoing complex tone as a pure-tone-like percept. Three experiments examined whether such pure-tone-like percepts are organized into streams by extending the research of Bregman and Rudnicky (1975). Those authors found that listeners struggled to identify the ...
Danna Jérémy - - 2011
The aim of the present study was to show the effect of orientation on producing ellipses of various eccentricities. Ten right-handed adults were required to reproduce eight series of 84 ellipses on a graphic tablet at spontaneous speed. The ellipses displayed seven eccentricities, corresponding to the Lissajous plot produced by ...
Smet Kevin - - 2011
Over the past years there has been increasing evidence that the CIE color rendering index R<sub>a</sub> fails to correspond to the perceived color quality of many light sources, especially some Light-Emitting-Diodes. Several proposals to update, complement or even replace the CIE R<sub>a</sub> have therefore been made. The performance of thirteen ...
Kajikawa Yoshinao Y Nathan S. Kline Institute for Psychiatric Research, 140 Old Orangeburg Road, Orangeburg, NY 10962, USA. - - 2011
We examined multiunit responses to tones and to 1/3 and 2/3 octave band-pass noise (BPN) in the marmoset primary auditory cortex (A1) and the caudomedial belt (CM). In both areas, BPN was more effective than tones, evoking multiunit responses at lower intensity and across a wider frequency range. Typically, the ...
Herbort Oliver - - 2011
The grasp orientation when grasping an object is frequently aligned in anticipation of the intended rotation of the object (end-state comfort effect). We analyzed grasp orientation selection in a continuous task to determine the mechanisms underlying the end-state comfort effect. Participants had to grasp a box by a circular handle-which ...
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