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Bouarfa Loubna - - 2014
Accurate estimation of daily total energy expenditure (EE) is a prerequisite for assisted weight management and assessing certain health conditions. The use of wearable sensors for predicting free-living EE is challenged by consistent sensor placement, user compliance, and estimation methods used. This paper examines whether a single ear-worn accelerometer can ...
Chang Weng-Long - - 2014
In this paper, DNA algorithms are proposed to perform eight operations of relational algebra (calculus), which include Cartesian product, union, set difference, selection, projection, intersection, join, and division, on bio-molecular relational databases.
Leopold Daniel R DR University of Colorado Boulder, USA - - 2014
To advance our understanding of adult ADHD and sluggish cognitive tempo (SCT), the present study investigates their construct validity by exploring the nature of trait- and method-related variance in self- and parent-ratings of ADHD and SCT. Using a multitrait-multimethod (MTMM) design, response variance in college undergraduates' (n = 3,925) and ...
DuBois C C 1Department of Animal and Poultry Science,University of Guelph,Stone Rd East,Guelph,ON,Canada N1G - - 2014
Examining the characteristics of an animal's lying behaviour, such as frequency and duration of lying bouts, has become increasingly relevant for animal welfare research. Triaxial accelerometers have the advantage of being able to continuously monitor an animal's standing and lying behaviour without relying on live observations or video recordings. Multiple ...
El-Swais Heba H Department of Biology, Concordia University, 7141 Sherbrooke St West, Montreal, Quebec, H4B 1R6, - - 2014
Temperate oceans are inhabited by diverse and temporally dynamic bacterioplankton communities. However, the role of the environment, resources and phytoplankton dynamics in shaping marine bacterioplankton communities at different time scales remains poorly constrained. Here, we combined time-series observations (time scales of weeks to years) with molecular analysis of formalin-fixed samples ...
Pattinson David J DJ Department of Zoology, Downing Street, Cambridge, CB2 3EJ. Division of Ecology and Evolution, Imperial College London, South Kensington Campus, London, SW7 2AZ. Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD. djp65@cam.ac.uk - - 2014
Paleontological systematics relies heavily on morphological data that have undergone decay and fossilization. Here, we apply a heuristic means to assess how a fossil's incompleteness detracts from inferring its phylogenetic relationships. We compiled a phylogenetic matrix for primates and simulated the extinction of living species by deleting an extant taxon's ...
Raj Pant Sara - - 2014
Extant sloths present an evolutionary conundrum in that the two living genera are superficially similar (small-bodied, folivorous, arboreal) but diverged from one another approximately 30 million years ago and are phylogenetically separated by a radiation of medium to massive, mainly ground-dwelling, taxa. Indeed, the species in the two living genera ...
Duffy Ryan D - - 2014
The current study examined the link between living a calling and career commitment, work meaning, and job satisfaction with a diverse group of working adults at 3 time points over a 6-month period. Using structural equation modeling, 3 models were tested that hypothesized that living a calling would predict career ...
Novosad David D Department of Psychiatry, School of Medicine, Oregon Health & Science University, Portland, - - 2014
There is a large population (n =389) of insanity acquittees on monitored conditional release in Oregon. This article focuses on the living situation for these individuals, which can range from a secure residential treatment facility to independent living. This article will define all the different placement options available and then ...
Wang Wenyi W Department of Civil and Environmental Engineering, University of Illinois Urbana Champaign, 205N. Mathews Ave, Urbana, IL 61801, USA. Electronic address: - - 2014
Sacrificial bonds and hidden length (SBHL) in structural molecules provide a mechanism for energy dissipation at the nanoscale. It is hypothesized that their presence leads to greater fracture toughness than what is observed in materials without such features. Here, we investigate this hypothesis using a simplified model of a mineralized ...
Andriotis Orestis G OG Bioengineering Science Research Group, Faculty of Engineering and the Environment, University of Southampton, SO17 1BJ Southampton, UK; Institute for Lightweight Design and Structural Biomechanics, Faculty of Engineering and the Environment, Vienna University of Technology, Gusshausstrasse 27-29, Vienna 1040, Austria. Electronic address: - - 2014
The nanomechanical assessment of collagen fibrils via atomic force microscopy (AFM) is of increasing interest within the biomedical research community. In contrast to conventional nanoindentation there exists no common standard for conducting experiments and analysis of data. Currently used analysis approaches vary between studies and validation of quantitative results is ...
Giner Eugenio E Departamento de Ingeniería Mecánica y de Materiales - CITV, Universitat Politècnica de València, Camino de Vera, 46022 Valencia, Spain. Electronic address: - - 2014
In this work, we present two strategies for the numerical modelling of microcracks and damage within an osteon. A numerical model of a single osteon under compressive diametral load is developed, including lamellae organized concentrically around the haversian canal and the presence of lacunae. Elastic properties have been estimated from ...
Pensalfini Marco - - 2014
The mechanical effect of a partial thickness tear or laceration of a tendon is analytically modeled under various assumptions and results are compared with previous experimental data. Among several fibril-level models considered, a shear-lag model that incorporates fibril-matrix interaction and a fibril-fibril interaction defined by the contact area of the ...
Sun Liqian L Department of Electronic Engineering, Fudan University, Shanghai 200433, - - 2014
In order to get a better understanding of atrial fibrillation, we introduced a method based on Graph Theory to interpret the relations of different parts of the atria. Atrial electrograms under sinus rhythm and atrial fibrillation were collected from eight living mongrel dogs with cholinergic AF model. These epicardial signals ...
Liu Xiaoyu X School of Biological sSience and Medical Engineering, School of Biological Science and Medical Engineering, Beihang University, No.37, Xueyuan Road, Beijing, 100191, China, Beijing, 100191, - - 2014
Purpose: To develop a mechanical model to investigate the relationship between the crimping morphology of collagen fibrils and the nonlinear mechanical behavior of the cornea. Methods: Uniaxial tensile experiments were performed on corneal strips to test the mechanical behavior. A constitutive model was constructed based on the Gaussian-distributed morphology of ...
Puria Sunil S Mech. Eng., Stanford Univ., 496 Lomita Mall, Stanford, CA 94305, - - 2014
A 3D 'virtual middle ear model' using finite-element modeling techniques was developed to simulate the dynamics of the human middle ear. COMSOLMultiphysics software was used to solve the resulting acoustics-structure interaction problem. The model is validated by comparing numerical results with experimental data measured in the ear canal (EC), on ...
Rohou Alexis A Department of Biochemistry, Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, MA 02454, USA; Janelia Farm Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, VA 20147, - - 2014
The structures of many helical protein filaments can be derived from electron micrographs of their suspensions in thin films of vitrified aqueous solutions. The most successful and generally-applicable approach treats short segments of these filaments as independent "single particles", yielding near-atomic resolution for rigid and well-ordered filaments. The single-particle approach ...
Szczesny Spencer E SE Department of Bioengineering, University of Pennsylvania, 240 Skirkanich Hall, 210 South 33rd St, Philadelphia, PA 19104. Electronic address: - - 2014
Despite the critical role tendons play in transmitting loads throughout the musculoskeletal system, little is known about the microstructural mechanisms underlying their mechanical function. Of particular interest is whether collagen fibrils in tendon fascicles bear load independently or if load is transferred between fibrils through interfibrillar shear forces. We conducted ...
Proyer René T RT a University of - - 2014
ABSTRACT This study addresses the basic structure of playfulness in adults from a psy-cho-lexical approach and its relationship with the sense of humor. Using items derived from a corpus analysis of written accounts in the German language, five factors were derived (N = 195); that is, (a) cheerful-engaged; (b) whimsical; ...
Selver M Alper MA Dokuz Eylul University, Dept. of Electrical and Electronics Eng., Izmir, - - 2014
Pre-evaluation of donors prior to surgery of living donated liver transplantation is one of the challenging applications that computer aided systems are needed. The precise measurement of liver volume requires effective segmentation procedures, while three dimensional rendering of the segmented data provides demonstrative information to radiologists and surgeons before surgery. ...
Tsui Genevieve Hin Ha GH Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON, Canada L8S - - 2014
With the increases in size and strength that come with adulthood, challenging behaviours among those with autism spectrum disorders (ASD) can become critical. Few studies have explored behavioural interventions in adults with ASD, though recent studies have shown video self-modeling (VSM) to be effective in children with ASD. VSM involves ...
Alvarez-Berastegui Diego D Balearic Islands Coastal Observing and Forecasting System (SOCIB), Palma de Mallorca, Balearic Islands, - - 2014
Seascape ecology is an emerging discipline focused on understanding how features of the marine habitat influence the spatial distribution of marine species. However, there is still a gap in the development of concepts and techniques for its application in the marine pelagic realm, where there are no clear boundaries delimitating ...
Wang Xu-Mei XM School of Pharmacy, Xi'an Jiaotong University, Xi'an, - - 2014
Rheum palmatum complex comprises all taxa within section Palmata in the genus Rheum, including R. officinale, R. palmatum, R. tanguticum, R. tanguticum var. liupanshanense and R. laciniatum. The identification of the taxa in section Palmata is based primarily on the degree of leaf blade dissection and the shape of the ...
Xue Wei-Feng WF School of Biosciences, University of Kent, Canterbury, United Kingdom; Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom. Electronic address: - - 2013
Delineating the nanoscale properties and the dynamic assembly and disassembly behaviors of amyloid fibrils is key for technological applications that use the material properties of amyloid fibrils, as well as for developing treatments of amyloid-associated disease. However, quantitative mechanistic understanding of the complex processes involving these heterogeneous supramolecular systems presents ...
Reinhardt James - - 2013
Agent-based modeling was used to model collagen fibrils, composed of a string of nodes serially connected by links that act as Hookean springs. Bending mechanics are implemented as torsional springs that act upon each set of three serially connected nodes as a linear function of angular deflection about the central ...
Inshyn DI - - 2013
Quantitative structure activity relationship (QSAR) studies were performed on a set of polymethine compounds to develop new fluorescent probes for detecting amyloid fibrils. Two different approaches were evaluated for developing a predictive model: part least squares (PLS) regression and an artificial neural network (ANN). A set of 60 relevant molecular ...
Wells Hannah C - - 2013
The main structural component of leather and skin is type I collagen in the form of strong fibrils. Strength is an important property of leather, and the way in which collagen contributes to the strength is not fully understood. Synchrotron-based small angle X-ray scattering (SAXS) is used to measure the ...
Tan Pengzhen - - 2013
During the application of the mass-action-equation models to the study of amyloid fiber formation, time-consuming numerical calculations constitute a major bottleneck. To conquer this difficulty, here an alternative efficient method is introduced for the fragmentation-only model. It includes two basic steps: (1) simulate close-formed time-evolutionary equations for the number concentration ...
Gillam J E - - 2013
Amyloid and amyloid-like fibrils are self-assembling protein nanostructures, of interest for their robust material properties and inherent biological compatibility as well as their putative role in a number of debilitating mammalian disorders. Understanding fibril formation is essential to the development of strategies to control, manipulate or prevent fibril growth. As ...
Yang Sichun - - 2013
We examine the energetics of ß-strand packing in a fibril-forming SH3 domain using a simple sequence-based energy model. First, we describe the packing energy model and then apply it to three model systems: the SH3 domain of PI3 kinase, the Aß peptide, and the HET-s prion. The packing results of ...
Andrikopoulos George K - - 2013
The objective of the present study was to evaluate, from an economic perspective, dabigatran etexilate in comparison to existing pharmaceutical therapeutic options available for the protection of moderate-to-high risk patients with non-valvular atrial fibrillation from cardioembolic risk. An existing Markov model was adapted to the Greek setting to reflect the ...
Co Nguyen Truong - - 2013
We have developed the lattice model for describing polypeptide chains in the presence of crowders. The influence of crowding confinement on the fibrillation kinetics of polypeptide chains is studied using this model. We observed the non-trivial behavior of the fibril formation time τfib that it decreases with the concentration of ...
Mononen Mika E - - 2013
Computational models can be used to evaluate the functional properties of knee joints and possible risk locations within joints. Current models with fibril-reinforced cartilage layers do not provide information about realistic human movement during walking. This study aimed to evaluate stresses and strains within a knee joint by implementing load ...
Nickien Mieke - - 2013
The primary structural components of articular cartilage are the zonally differentiated interconnected network of collagen fibrils and proteoglycans, the latter having the potential to bind large amounts of water. Both components exist in a coupled relationship that gives rise to its remarkable mechanical properties. The response of cartilage to compression ...
Kaneko Masato - - 2013
This study was designed to confirm the appropriateness of the dose setting for a Japanese phase III study of rivaroxaban in patients with non-valvular atrial fibrillation (NVAF), which had been based on model simulation employing phase II study data. The previously developed mixed-effects pharmacokinetic/pharmacodynamic (PK-PD) model, which consisted of an ...
McDonald Catherine C CC School of Nursing, University of Pennsylvania, Philadelphia, PA, - - 2013
Driving simulators can be used to evaluate driving performance under controlled, safe conditions. Teen drivers are at particular risk for motor vehicle crashes and simulated driving can provide important information on performance. We developed a new simulator protocol, the Simulated Driving Assessment (SDA), with the goal of providing a new ...
González-Juanatey José R JR Servicio de Cardiología, Hospital Clínico Universitario de Santiago, Santiago de Compostela, A Coruña, - - 2012
Assessment of the cost-effectiveness of dabigatran for the prevention of stroke and systemic embolism in patients with non-valvular atrial fibrillation in Spain, from the perspective of the National Health System. Adaptation of a Markov chain model that simulates the natural history of the disease over the lifetime of a cohort ...
Mezentseva L V - - 2012
Electrical activity of the heart during ventricular fibrillation was modeled as a sum of N independent pulse streams with various amplitude-frequency and phase characteristics. The data of computational experiments were compared with the results of actual physiological experiments on dogs. Identification of the model was performed using the least square ...
Sereinigg M - - 2012
Due to the lack of human donors, several strategies have sought to expand the organ pool. Efforts to characterize donation after cardiac death (DCD) have included studies of cell viability, histological and immunohistochemical changes, and oxidative stress, which is known to negatively impact graft survival. A large animal model would ...
Larue Lionel - - 2012
Melanoblasts are a particular type of cell that displays extensive cellular proliferation during development to contribute to the skin. There are only a few melanoblast founders, initially located just dorsal to the neural tube, and they sequentially colonize the dermis, epidermis, and hair follicles. In each compartment, melanoblasts are exposed ...
Simakov David S A - - 2012
Similar to other organisms, Drosophila uses its Epidermal Growth Factor Receptor (EGFR) multiple times throughout development. One crucial EGFR-dependent event is patterning of the follicular epithelium during oogenesis. In addition to providing inductive cues necessary for body axes specification, patterning of the follicle cells initiates the formation of two respiratory ...
Boer H M T - - 2012
The complex interplay of physiological factors that underlies fertility in dairy cows was investigated using a mechanistic mathematical model of the dynamics of the bovine estrous cycle. The model simulates the processes of follicle and corpus luteum development and its relations with key hormones that interact to control these processes. ...
Izumi Tokukazu - - 2012
The relationship between the growth of preantral and antral follicles and that of their oocytes in ovaries of domestic cats (Felis catus) was analyzed. Eight hundred and five pairs of follicles and oocytes from the ovaries of 51 female cats were collected, and only healthy and fresh follicles and oocytes ...
Rodgers Gregory B - - 2012
ObjectiveTo evaluate the effectiveness of the immersion protection requirements of a voluntary safety standard for portable handheld hair dryers in preventing electrocution deaths in the USA.MethodsThe present work was an interrupted time series study design. Data on annual hair dryer-related electrocution deaths resulting from water contact were developed for the ...
Hoffman Gloria E - - 2012
FMR1 premutation (PM) alleles have 55-200 CGG·CCG-repeats in their 5' UTR. PM carriers are at risk of fragile X-associated tremor and ataxia syndrome (FXTAS). Females are also at risk for FX primary ovarian insufficiency (FXPOI). PM pathology is generally attributed to deleterious properties of transcripts with long CGG-tracts. For FXPOI, ...
Meaud Julien J Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, - - 2012
In this article, a nonlinear mathematical model is developed based on the physiology of the cochlea of the guinea pig. The three-dimensional intracochlear fluid dynamics are coupled to a micromechanical model of the organ of Corti and to electrical potentials in the cochlear ducts and outer hair cells (OHC). OHC ...
Ramamoorthy Sripriya S Oregon Hearing Research Center, Department of Otolaryngology, Oregon Health & Science University, Portland, Oregon, - - 2012
The active amplification of sound-induced vibrations in the cochlea, known to be crucial for auditory sensitivity and frequency selectivity, is not well understood. The outer hair cell (OHC) somatic electromotility is a potential mechanism for such amplification. Its effectiveness in vivo is putatively limited by the electrical low-pass filtering of the cell's ...
Lademann J - - 2012
Bacteria and fungi are located in the stratum corneum and the hair follicles. Therefore, the development and assessment of efficient drugs requires standard in vivo investigation methods permitting a differentiation between intercellular and follicular penetration and storage of topically applied anti-microbial substances. In the present study, the penetration and storage ...
Josefsson Anders - - 2012
The alpha particle emitter 211At is proposed for therapy of metastatic tumour disease. 211At is accumulated in the thyroid gland in a similar way as iodine. Dosimetric models of 211At in the thyroid are needed for radiation protection assessments for 1) patients receiving 211At-labelled pharmaceuticals where 211At may be released ...
Ablitzer Frédéric - - 2012
Experienced bow makers empirically know the influence of wood, tapering, and camber on the playing and tonal qualities of a bow. However, the way each parameter affects the bow mechanical behavior is not clearly established. An in-plane finite element model is developed to highlight the link between the adjustable design ...
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