299,910 results match your criteria Contact Lens Spectrum[Journal]


Fabrication of a Low Adhesive Superhydrophobic Surface on Ti6Al4V Alloys Using TiO₂/Ni Composite Electrodeposition.

Micromachines (Basel) 2019 Feb 13;10(2). Epub 2019 Feb 13.

School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China.

A superhydrophobic surface with low adhesion and good wear resistance was fabricated on Ti6Al4V substrates via TiO₂/Ni composite electrodeposition, and subsequently modified with a fluoroalkylsilane (FAS) film. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and optical contact angle measurements were used to characterize the surface morphologies, chemical compositions, and surface wettability. The superhydrophobicity of the as-prepared surface results from the fabrication of a hierarchical structure and the assembly of low-surface energy fluorinated components. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/mi10020121DOI Listing
February 2019

Co₃O₄/Al-ZnO Nano-composites: Gas Sensing Properties.

Sensors (Basel) 2019 Feb 13;19(4). Epub 2019 Feb 13.

Department of Information Engineering and Mathematical Sciences, University of Siena, 53100 Siena, Italy.

In this paper, the gas sensing properties of metal oxide nano-powder composites are studied and modeled. The gas sensing properties of mixtures of two different metal oxide nanoparticles, prepared via low-cost routes, are investigated. The responses to both an oxidizing (NO₂) and a reducing gas (CO) are analyzed. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19040760DOI Listing
February 2019

Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method.

Materials (Basel) 2019 Feb 13;12(4). Epub 2019 Feb 13.

National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China.

In asphalt mixture, aggregates account for up to 90% of the total volume and play an important role in the mechanical characteristics of asphalt mixture. The proportions of fine and coarse aggregates in gradation, as well as the function of aggregate particles, are important factors for the skeleton structure performance of asphalt mixtures. However, the existing asphalt mixture design methods are mostly based on empirical methods, where the non-uniformity and complexity of the composition of asphalt mixtures are not fully studied. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/ma12040556DOI Listing
February 2019

Improvement of Asphalt-Aggregate Adhesion Using Plant Ash Byproduct.

Materials (Basel) 2019 Feb 18;12(4). Epub 2019 Feb 18.

Key Laboratory of Special Area Highway Engineering, MOE, Xi'an 710064, China.

The adhesion bonding between asphalt and aggregate significantly influences field performance and durability of asphalt pavement. Adhesion promoters are typically used to improve asphalt-aggregate bonding and minimize moisture-related pavement damage, such as cracking and raveling. This study evaluated the effectiveness of plant ash byproduct as adhesion promoter to improve asphalt-aggregate adhesion performance. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/ma12040605DOI Listing
February 2019

A Finite Element Model for Dynamic Analysis of Triple-Layer Composite Plates with Layers Connected by Shear Connectors Subjected to Moving Load.

Materials (Basel) 2019 Feb 16;12(4). Epub 2019 Feb 16.

Faculty of Mechanical Engineering, Le Quy Don Technical University, Ha Noi 100000, Vietnam.

Triple-layered composite plates are created by joining three composite layers using shear connectors. These layers, which are assumed to be always in contact and able to move relatively to each other during deformation, could be the same or different in geometric dimensions and material. They are applied in various engineering fields such as ship-building, aircraft wing manufacturing, etc. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/ma12040598DOI Listing
February 2019

Nanocomposite Film Based on Cellulose Acetate and Lignin-Rich Rice Straw Nanofibers.

Materials (Basel) 2019 Feb 16;12(4). Epub 2019 Feb 16.

Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE 97187 Luleå, Sweden.

Nanofibers isolated from unbleached neutral sulfite rice straw pulp were used to prepare transparent films without the need to modify the isolated rice straw nanofibers (RSNF). RSNF with loading from 1.25 to 10 wt. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/ma12040595DOI Listing
February 2019

Pathogenicity and Transmissibility of North American H7 Low Pathogenic Avian Influenza Viruses in Chickens and Turkeys.

Viruses 2019 Feb 16;11(2). Epub 2019 Feb 16.

VA-MD Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA.

Low pathogenic avian influenza (LPAI) viruses can silently circulate in poultry and wild aquatic birds and potentially mutate into highly pathogenic avian influenza (HPAI) viruses. In the U.S. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/v11020163DOI Listing
February 2019

Contact Modelling and Tactile Data Processing for Robot Skins.

Sensors (Basel) 2019 Feb 16;19(4). Epub 2019 Feb 16.

Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genoa, 16145 Genova, Italy.

Tactile sensing is a key enabling technology to develop complex behaviours for robots interacting with humans or the environment. This paper discusses computational aspects playing a significant role when extracting information about contact events. Considering a large-scale, capacitance-based robot skin technology we developed in the past few years, we analyse the classical Boussinesq⁻Cerruti's solution and the Love's approach for solving a distributed inverse contact problem, both from a qualitative and a computational perspective. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19040814DOI Listing
February 2019

Buckling Force Variability of Semmes⁻Weinstein Monofilaments in Successive Use Determined by Manual and Automated Operation.

Sensors (Basel) 2019 Feb 16;19(4). Epub 2019 Feb 16.

Human Informatics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, Japan.

(1) Objective: This study was conducted with the objective of characterizing the variability of a force on a simulated skin surface using the Semmes⁻Weinstein monofilament test (SWMT). (2) Research Design and Methods: Two distinct experiments were performed to determine the effects of human hand motion variability on the monofilament buckling force, and to determine the monofilament's mechanical properties using a positioning stage. (3) Results: In manual operation (by human hand motion), the buckling force over the ten compressions decreased by over 10%, and the human hand motion variations during the SWMT may have impacted the buckling force. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/s19040803DOI Listing
February 2019

All Solid-State Poly (Vinyl Chloride) Membrane Potentiometric Sensor Integrated with Nano-Beads Imprinted Polymers for Sensitive and Rapid Detection of Bispyribac Herbicide as Organic Pollutant.

Molecules 2019 Feb 16;24(4). Epub 2019 Feb 16.

Chemistry Department, Faculty of Science, Ain Shams University, P.O. 11566 Cairo, Egypt.

All-solid-state potentiometric sensors were prepared by using polyaniline (PANI) as the solid contact material. A film of PANI (thickness approximately being 0.25 µm) was deposited on a solid substrate (carbon screen printed platform). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/molecules24040712DOI Listing
February 2019

Performance of Acacia Gum as a Novel Additive in Thin Film Composite Polyamide RO Membranes.

Membranes (Basel) 2019 Feb 15;9(2). Epub 2019 Feb 15.

Qatar Environment and Energy Research Institute (QEERI), Hamad bin Khalifa University (HBKU), Qatar Foundation, 34110 Doha, Qatar.

Novel thin film composite (TFC) polyamide (PA) membranes blended with 0.01⁻0.2 wt. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/membranes9020030DOI Listing
February 2019

Physicochemical, Antioxidant and Antimicrobial Properties of Electrospun Poly(ε-caprolactone) Films Containing a Solid Dispersion of Sage ( L.) Extract.

Nanomaterials (Basel) 2019 Feb 15;9(2). Epub 2019 Feb 15.

Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980 Paterna, Valencia, Spain.

In this study, novel active films made of poly(ε-caprolactone) (PCL) containing a solid dispersion of sage extract (SE) were developed by means of the electrospinning technique and subsequent annealing treatment. Initially, the antioxidant and antimicrobial potential of SE was confirmed. Thereafter, the effect of SE incorporation at different loading contents (5%, 10%, and 20%) on the physicochemical and functional properties of the films was evaluated. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/nano9020270DOI Listing
February 2019

Iron in Lung Pathology.

Pharmaceuticals (Basel) 2019 Feb 15;12(1). Epub 2019 Feb 15.

Department of Medicine, David Geffen School of Medicine at the University of California, Los Angeles, CA 90095, USA.

The lung presents a unique challenge for iron homeostasis. The entire airway is in direct contact with the environment and its iron particulate matter and iron-utilizing microbes. However, the homeostatic and adaptive mechanisms of pulmonary iron regulation are poorly understood. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/ph12010030DOI Listing
February 2019

Dynamic vaccination in partially overlapped multiplex network.

Phys Rev E 2019 Jan;99(1-1):012302

Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, and Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR-CONICET), Deán Funes 3350, 7600 Mar del Plata, Argentina and Center for Polymer Studies, Boston University, Boston, Massachusetts 02215, USA.

In this work we propose and investigate a strategy of vaccination which we call "dynamic vaccination." In our model, susceptible people become aware that one or more of their contacts are infected and thereby get vaccinated with probability ω, before having physical contact with any infected patient. Then the nonvaccinated individuals will be infected with probability β. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.012302DOI Listing
January 2019

Global topology of contact force networks: Insight into shear thickening suspensions.

Phys Rev E 2019 Jan;99(1-1):012607

Pacific Northwest National Laboratory, Richland, Washington 99352, USA.

Highly concentrated particle suspensions (also called slurries) can undergo a sharp increase in viscosity, or shear thickening, under applied stress. Understanding the fundamental features leading to such rheological change is crucial to optimize flow conditions or to design flow modifiers for slurry processing. While local changes to the particle environment under applied shear can be related to changes in viscosity, there is a broader need to connect the shear thickening transition to the fundamental organization of particle-interaction forces which lead to long-range organization. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.012607DOI Listing
January 2019

Granular column collapse: Analysis of grain-size effects.

Phys Rev E 2019 Jan;99(1-1):012905

Department of Civil and Environmental Engineering, Universidad de los Andes, Bogotá, Colombia.

The column collapse experiment is a simplified version of the complex granular flows observed in both natural and industrial contexts. Due to its simple setup and rich behavior, the column collapse has been studied experimentally and numerically by several authors. The purpose of the analyses presented in this paper is to verify whether some of the results presented in these publications are affected by grain-size effects. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.012905DOI Listing
January 2019

Force networks and jamming in shear-deformed sphere packings.

Phys Rev E 2019 Jan;99(1-1):012123

Jawaharlal Nehru Center for Advanced Scientific Research, Jakkur Campus, Bengaluru 560064, India.

The emergence of rigidity upon changes of temperature, density, or applied stresses in disordered assemblies of particles is of interest in a wide range of soft matter, from glass formers, gels, foams, and granular matter. Shear jamming of frictional grains presents an interesting special case wherein the application of shear stress leads to rigidity rather than its loss. The formation of self-organized structures that resist shear deformation offers an appealing geometric picture of shear jamming, which nevertheless is incompletely developed, and not well integrated with ideas concerning rigidity in frictionless systems. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.012123DOI Listing
January 2019

Lattice Boltzmann simulation of immiscible three-phase flows with contact-line dynamics.

Phys Rev E 2019 Jan;99(1-1):013308

School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

A multiphase lattice Boltzmann method is developed to simulate immiscible three-phase flows with contact-line dynamics. In this method, the immiscible three-phase flow is modeled by a multiple-relaxation-time color-gradient model, which not only allows for a full range of interfacial tensions but also can produce viscosity-independent results especially when the fluid-surface interactions are considered. To achieve the desired contact angles, a weighted contact angle model is utilized to obtain a relatively smooth transition of contact angle for each fluid, which is enforced through a geometrical wetting condition. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.013308DOI Listing
January 2019

Optimal work in a harmonic trap with bounded stiffness.

Phys Rev E 2019 Jan;99(1-1):012140

Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.

We apply Pontryagin's principle to drive rapidly a trapped overdamped Brownian particle in contact with a thermal bath between two equilibrium states corresponding to different trap stiffness κ. We work out the optimal time dependence κ(t) by minimizing the work performed on the particle under the nonholonomic constraint 0≤κ≤κ_{max}, an experimentally relevant situation. Several important differences arise, as compared with the case of unbounded stiffness that has been analyzed in the literature. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.012140DOI Listing
January 2019

Magnus effect in granular media.

Phys Rev E 2019 Jan;99(1-1):012902

Department of Chemical Engineering, Indian Institute of Technology, Guwahati 781039, Assam, India.

A spinning ball moving through air experiences a net lift due to the "Magnus effect" resulting from the pressure difference across its two sides. In this work, with the help of numerical simulations, we present a similar phenomenon on a circular intruder undergoing both translational and rotational motion in a two-dimensional granular medium. The direction of this "Magnus" lift in a granular medium, irrespective of its area fraction, is opposite to the general direction in viscous fluids in the range of velocities studied. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.012902DOI Listing
January 2019

Our observations with cold calling: Patient anger and undesirable experiences.

Emerg Med Australas 2019 Feb 19. Epub 2019 Feb 19.

Bairnsdale Regional Health Service, Bairnsdale, Victoria, Australia.

Little is known about the effects of the 'cold calling' technique (telephone contact without prior warning) for patient follow up in ED research. Recently, we undertook a prospective, observational pain management study. Patients were cold called 48 h post-discharge and surveyed regarding their pain management satisfaction. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/1742-6723.13258DOI Listing
February 2019

Plasma Concentrations of High Molecular Weight Kininogen and Prekallikrein and Venous Thromboembolism Incidence in the General Population.

Thromb Haemost 2019 Feb 19. Epub 2019 Feb 19.

Department of Medicine, University of Vermont, Burlington, Vermont, United States.

The kallikrein/kinin system, an intravascular biochemical pathway that includes several proteins involved in the contact activation system of coagulation, renin-angiotensin activation and inflammation, may or may not play a role in venous thromboembolism (VTE) occurrence. Within a large prospective population-based study in the United States, we conducted a nested case-cohort study to test the hypothesis that higher plasma levels of high molecular weight kininogen (HK) or prekallikrein are associated with greater VTE incidence. We related baseline enzyme-linked immunosorbent assay measures of HK and prekallikrein in 1993 to 1995 to incidence VTE of the lower extremity ( = 612) through 2015 (mean follow-up = 18 years). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1055/s-0039-1678737DOI Listing
February 2019

Probing electromechanical behaviors by datacube piezoresponse force microscopy in ambient and aqueous environments.

Nanotechnology 2019 Feb 19. Epub 2019 Feb 19.

Department of Electronic Engineering, School of Information Science and Technology, East China Normal University, Shanghai, CHINA.

For assisting the in-depth investigations of widespread electromechanical phenomena in functional materials, piezoresponse force microscopy (PFM) has gradually evolved to realize full information-flow acquisition and fit the conductive liquid working environments. Here, we designed data cube (DCUBE) based PFM to collect the electromechanical effect into a high-dimensional array of piezoresponse by adding \emph{ac} bias with a wide range of frequencies to the probe. The electromechanical and mechanical spectra can be consecutively extracted at each pixel in the intermittent-contact mode. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1088/1361-6528/ab0866DOI Listing
February 2019

Multilayer graphene nanobelts on SWCNTs films for high current interconnect applications.

Nanotechnology 2019 Feb 19. Epub 2019 Feb 19.

Centre for Seminconductor Components, Universidade Estadual de Campinas, CEP 13083-9870, Campinas, SP, Campinas, BRAZIL.

In this work we propose multilayer graphene (MLG) nanobelts for high current interconnections with single wall carbon nanotubes (SWCNT) and compare with metal contacts. MLG contacts were directly printed on SWCNT, without additional metal parts, demonstrating possibility to use as interconnections in microelectronics. Different work function metals Al, Ti and Pd were probed for the lowest contact resistance with SWCNT. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1088/1361-6528/ab083fDOI Listing
February 2019

Effects of backwashing strategy and dissolved oxygen on arsenic removal to meet drinking water standards in a sulfidogenic attached growth reactor.

J Hazard Mater 2019 Feb 8;369:309-317. Epub 2019 Feb 8.

Department of Civil Engineering, IIT Guwahati, Guwahati, India. Electronic address:

Efficiency and feasibility of two backwashing methods (water-nitrogen and water-air assisted) on arsenic and its co-pollutants removal were assessed through running a sulfidogenic attached growth reactor (AGR) treating arsenic spiked simulated groundwater for about 600 days. Replacing water with nitrogen assisted backwashing (WNAB) by water with air assisted backwashing (WAAB) introduced dissolved oxygen (DO) as an additional electron acceptor, which required an increased empty bed contact time (EBCT) to retain the entire terminal electron accepting zones (DO, nitrate, arsenate and sulfate) within the reactor. Removal of arsenic to below 10 μg/L required a longer EBCT at higher influent DO in backwash water. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jhazmat.2019.02.018DOI Listing
February 2019

Fabrication of hydrophilic and antibacterial poly(vinylidene fluoride) based separation membranes by a novel strategy combining radiation grafting of poly(acrylic acid) (PAA) and electroless nickel plating.

J Colloid Interface Sci 2019 Feb 6;543:64-75. Epub 2019 Feb 6.

College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, PR China. Electronic address:

This study proposed a novel strategy to improve performance of inherently hydrophobic poly(vinylidene fluoride) (PVDF) membrane. The proposed strategy combined radiation grafting of poly(acrylic acid) (PAA) and electroless nickel plating. After a 5 min plating by using this modification strategy, the water contact angle of the modified membrane decreased from 75. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jcis.2019.02.013DOI Listing
February 2019

Low rate of gut colonization by extended-spectrum β-lactamase producing Enterobacteriaceae in HIV infected persons as compared to healthy individuals in Nepal.

PLoS One 2019 19;14(2):e0212042. Epub 2019 Feb 19.

Manipal College of Medical Sciences, Pokhara, Nepal.

A worldwide increase in the gastrointestinal colonization by extended-spectrum β-lactamase (ESBL)-producing bacteria has been observed. Their prevalence amongst Healthy People Living with HIV (HPLWH) has not been investigated adequately. The aim of this study was to determine and compare the rates of and risk factors for intestinal carriage and acquisition of extended-spectrum β-lactamase producing Enterobacteriaceae (ESBL-E) and carbapenemase-producing Enterobacteriaceae (CPE) among healthy people living with HIV (HPLWH) and healthy HIV negative population in the community. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0212042PLOS
February 2019

Epitaxial van der Waals Contacts between Transition-metal Dichalcogenide Monolayer Polymorphs.

Nano Lett 2019 Feb 19. Epub 2019 Feb 19.

We have achieved heteroepitaxial stacking of a van der Waals ( vdW) monolayer metal, 1T'-WTe and semiconductor, 2H-WSe, in which a distinctively low contact barrier was established across a clean epitaxial vdW gap. Our epitaxial 1T'-WTe films were identified as a semimetal by low temperature transport, and showed the robust breakdown current density of 5.0 x 10 A/cm. Read More

View Article

Download full-text PDF

Source
http://pubs.acs.org/doi/10.1021/acs.nanolett.8b04869
Publisher Site
http://dx.doi.org/10.1021/acs.nanolett.8b04869DOI Listing
February 2019
1 Read

Controlled Phase Separation in Poly( p-phenyleneethynylene) Thin Films and its Relationship to Vapor Sensing Properties.

Langmuir 2019 Feb 19. Epub 2019 Feb 19.

In this paper, we report the synthesis and mesoporous film formation of hydrophobic rod-like poly( p-phenyleneethynylene)s (PPEs) and present porosity-dependent quenching studies using 1,3,5-trinitrotoluene (TNT) vapors. Non-solvent vapor-induced phase separation (NVIPS) was used to induce pore formation during film casting, and the concentration of PPEs in the casting solution was controlled carefully to prevent excimer formation. We found that the structure of the sidechains of the PPEs strongly influence the range of the relative humidity at which controlled pore generation occurs, which could be rationalized from interfacial energies calculated from contact angle measurements. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1021/acs.langmuir.8b03939DOI Listing
February 2019

The evolutionary response of mating system to heterosis.

J Evol Biol 2019 Feb 19. Epub 2019 Feb 19.

University of Minnesota, Department of Plant and Microbial Biology, Saint Paul, Minnesota, United States.

Isolation allows populations to diverge and to fix different alleles. Deleterious alleles that reach locally high frequencies contribute to genetic load, especially in inbred or selfing populations, in which selection is relaxed. In the event of secondary contact, the recessive portion of the genetic load is masked in the hybrid offspring, producing heterosis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/jeb.13430DOI Listing
February 2019

H and C NMR data, occurrence, biosynthesis and biological activity of Piper amides.

Magn Reson Chem 2019 Feb 19. Epub 2019 Feb 19.

Centro de Investigaciones Químicas, IICBA, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Morelos, México.

Alkamides are the major and characteristic chemical compounds of the plants belonging to the Piper genus. These compounds are responsible for the flavor of pepper spices and for its broad use in cuisine across many regions of the world. Humans are in contact every day with these substances, which additionally show a broad variety of pharmacological activities, making them an important research target. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mrc.4857DOI Listing
February 2019

Challenges to human rabies elimination highlighted following a rabies outbreak in bovines and a human in Punjab, India.

Zoonoses Public Health 2019 Feb 18. Epub 2019 Feb 18.

Faculty of Science, Sydney School of Veterinary Science, The University of Sydney, Camden, New South Wales, Australia.

In August 2015, a rabies outbreak occurred in bovines in a Punjab village, India; subsequently, a farmer in the same village died of rabies in October 2015. We surveyed farmers to describe the outbreak, the demographics and rabies prophylaxis administered to householders on case farms, and farmers' knowledge of rabies prevention and treatment. We used multiple correspondence analysis to guide investigation of associations between demographics, farm status and rabies knowledge, attitudes and practices. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/zph.12568DOI Listing
February 2019

Ultrasound Evaluation of the Protector Role of the Pronator Quadratus Suture in Volar Plating.

J Ultrasound Med 2019 Feb 18. Epub 2019 Feb 18.

Institut Chirurgical de la Main et du Membre Supérieur, Villeurbanne, France.

The main complication of volar locking plates for distal radius fractures is flexor tendon rupture. The flexor pollicis longus (FPL) is the most commonly ruptured. Repair of the pronator quadratus (PQ) is one of the ways to prevent tendon rupture. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/jum.14968DOI Listing
February 2019

A new source for isothiazolinone contact allergy in traditional, non-digital photography.

Contact Dermatitis 2019 Feb 18. Epub 2019 Feb 18.

Department of Dermatology, University of Montpellier, France.

A 61-year-old patient was referred for a one-year history of relapsing itchy erythematous and vesicular lesions on the dorsa of the hands progressively extending to the neck, the neckline and the face (fig 1). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cod.13245DOI Listing
February 2019

Occupational allergic contact dermatitis to sulfite in a seafood section worker of a supermarket.

Contact Dermatitis 2019 Feb 18. Epub 2019 Feb 18.

Service de Dermatologie, CHU Montpellier, Université Montpellier I, Montpellier, France.

A 56-year-old female patient was referred for itchy face dermatitis of a few months duration (fig 1). She had had allergic contact dermatitis to cheap jewellery and to an antifungal cream (Kétoderm) and was regularly using cosmetics for vascular rosacea. This article is protected by copyright. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cod.13244DOI Listing
February 2019

Contact Allergy and Allergic Contact Dermatitis to Lavender: A Retrospective Study from an Australian Clinic.

Contact Dermatitis 2019 Feb 18. Epub 2019 Feb 18.

Skin and Cancer Foundation Inc, Occupational Dermatology Research and Education Centre, Carlton, Victoria, Australia.

Background: Lavender is commonly used in aromatherapy and in a broad range of personal and household products. It has been identified as a contact sensitizer and has been reported to cause allergic contact dermatitis (ACD).

Objectives: To report our experience with contact allergy and ACD to lavender and to raise awareness of lavender as a potential contact allergen. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cod.13247DOI Listing
February 2019

T lymphocyte phenotype of contact allergic patients: experience with nickel and p-phenylenediamine.

Contact Dermatitis 2019 Feb 18. Epub 2019 Feb 18.

Faculty of Biology, Medicine and Health, University of Manchester.

Background: There is considerable interest in understanding the immunological variables that have the greatest influence on the effectiveness of sensitization by contact allergens, particularly in the context of developing new paradigms for risk assessment of novel compounds OBJECTIVES: To examine the relationship between patch test score for 3 different contact allergens and the characteristics of T-cell responses.

Patients/materials/methods: A total of 192 patients with confirmed nickel, p-phenylenediamine (PPD) or methylisothiazolinone allergy were recruited from the Contact Dermatitis Investigation Unit at Salford Royal Hospital. Severity of allergy was scored by patch testing and peripheral blood lymphocytes characterized for T cell phenotype by flow cytometry and proliferative activity by radiolabelled thymidine incorporation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cod.13246DOI Listing
February 2019

The role of the hospital environment in the healthcare-associated infections: a general review of the literature.

Eur Rev Med Pharmacol Sci 2019 Feb;23(3):1266-1278

Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy.

Healthcare-associated infections (HAIs) are one of the most relevant public health problems worldwide. The role of the hospital environment as a reservoir of pathogens causing HAIs is still debated. These pathogens are common in several hospital environments, where they are able to persist from hours to months and their circulation is favored by healthcare workers (HCWs). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.26355/eurrev_201902_17020DOI Listing
February 2019

Bacterial indicator reduction in dairy manure using hybrid zero-valent iron (h-ZVI) system.

Environ Sci Pollut Res Int 2019 Feb 18. Epub 2019 Feb 18.

Department of Biological and Agricultural Engineering, Texas A&M University, 375 Olsen Blvd, College Station, TX, 77843, USA.

Novel and efficient animal wastewater treatment technologies of bacteria reduction are needed for preventing disease outbreak in animal herds and safeguarding environmental health. Zero-valent iron (ZVI) has been used to treat bacteria contaminated water for the past decades, but its passivation issue has been a major challenge. In this study, batch tests were performed to evaluate the effect of a hybrid zero-valent iron (h-ZVI) or a mixed ZVI/FeO media system on reduction of Escherichia coli (E. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s11356-019-04501-xDOI Listing
February 2019

Fluorescence Based Investigation of Temperature-Dependent Pb-Specific 8-17E DNAzyme Catalytic Sensor.

J Fluoresc 2019 Feb 18. Epub 2019 Feb 18.

Department of Chemistry, University of Sistan and Baluchestan, Zahedan, 98135-674, Iran.

The 8-17E DNAzyme is a temperature-dependent DNA metalloenzyme catalyzing RNA trans esterification in the presence of Pb metal ions. Labeling the stems of the substrate and DNAzyme with the Cy3 and Cy5 respectively, the considered DNAzyme was studied by the fluorescence spectroscopy. The temperature-dependent variability of the Pb-specific 8-17E DNAzyme catalytic sensor was investigated trough a number of successive temperature fluctuations from 4 to 25 °C to obtain information. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10895-019-02346-8DOI Listing
February 2019

Epidemiologic, clinical, and laboratory characteristics of childhood brucellosis : A study in an Iranian children's referral hospital.

Wien Med Wochenschr 2019 Feb 18. Epub 2019 Feb 18.

Pediatric Infectious Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran.

Background: Brucellosis is endemic in Iran. Children constitute 20-25% of cases. We determined clinical, laboratory, and epidemiologic characteristics of pediatric brucellosis patients hospitalized at the Children's Medical Center from May 2011 to December 2016. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10354-019-0685-zDOI Listing
February 2019

A Diffuse Interface Framework for Modeling the Evolution of Multi-cell Aggregates as a Soft Packing Problem Driven by the Growth and Division of Cells.

Bull Math Biol 2019 Feb 18. Epub 2019 Feb 18.

Mechanical Engineering, University of Wisconsin-Madison, Madison, USA.

We present a model for cell growth, division and packing under soft constraints that arise from the deformability of the cells as well as of a membrane that encloses them. Our treatment falls within the framework of diffuse interface methods, under which each cell is represented by a scalar phase field and the zero level set of the phase field represents the cell membrane. One crucial element in the treatment is the definition of a free energy density function that penalizes cell overlap, thus giving rise to a simple model of cell-cell contact. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s11538-019-00577-1DOI Listing
February 2019

Enhanced emissions of brominated flame retardants from indoor sources by direct contact with dust.

Environ Monit Assess 2019 Feb 19;191(3):170. Epub 2019 Feb 19.

International Joint Research Center for Persistent Toxic Substances, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.

The emissions of brominated flame retardants (BFRs) from consumer products have been considered the major to the ubiquitous occurrence of contaminants in indoor environments. Direct contact with dust covering the surface of source materials in a real environment could introduce significant uncertainty. This study investigated the effects of dust coverage on the emissions of four BFRs, including 1, 2, 5, 6, 9, and 10-hexabromocyclododecane (HBCD), bis(2-ethyl-1-hexyl) tetrabromophthalate (BEHTBP), tetrabromobisphenol A (TBBPA), and hexabromobenzene (HBBZ), from decorative laminate, cotton sound insulation, PVC floor, and carpet. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s10661-019-7303-9DOI Listing
February 2019

Provider perceptions' of a patient navigator for adolescents and young adults with cancer.

Support Care Cancer 2019 Feb 18. Epub 2019 Feb 18.

Department of OB-GYN, School of Medicine, New York University, New York, NY, 10016, USA.

Purpose: Healthcare providers (HCPs) and other staff at a comprehensive Cancer Center were interviewed on how to best implement a patient navigator position when working with adolescents and young adults (AYA) with cancer. Research objectives included assessing staff perceptions of (a) barriers to optimal care for AYA, (b) roles and responsibilities for a patient navigator, and (c) training needed for future patient navigators.

Methods: Semi-structured interviews were conducted with 17 staff members providing care to AYA. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00520-019-04687-3DOI Listing
February 2019

Indications for tracheostomy in children with head and neck lymphatic malformation: analysis of a nationwide survey in Japan.

Surg Today 2019 Feb 18. Epub 2019 Feb 18.

Department of Pediatric Surgery, Osaka Women's and Children's Hospital, 840, Murodocho, Izumi, Osaka, Japan.

Purpose: Airway obstruction caused by lymphatic malformation (LM) in the head and neck may require a tracheostomy. We present the results of our analysis of a nationwide survey on the indications for tracheostomy in children with head and neck LM.

Methods: We analyzed data in relation to tracheostomy based on a questionnaire about 518 children with head and neck LM without mediastinal involvement. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00595-018-1755-3DOI Listing
February 2019

Granulysin- and granzyme-dependent elimination of myeloid cells by therapeutic ova-specific type 1 regulatory T cells.

Int Immunol 2019 Feb 19. Epub 2019 Feb 19.

INSERM, UMR1043, Centre de Physiopathologie de Toulouse Purpan, Purpan University Hospital, 1 place du Dr Baylac, Toulouse, France.

The intrinsic immunosuppressive properties of regulatory T (Treg) cells can be harnessed for therapeutic approaches aiming at down-modulating harmful immune reactions. In this context, expanded type 1 Treg cells (Tr1 cells) specific for ovalbumin (ova-Tr1 cells) have been tested for clinical efficacy in the treatment of autoimmune disorders such as refractory Crohn's disease (CD). The clinical use of these therapeutic products warrants exploration of their mechanism of action. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1093/intimm/dxy083DOI Listing
February 2019

Friction between a polyethylene pin and a microtextured CoCrMo disc, and its correlation to polyethylene wear, as a function of sliding velocity and contact pressure, in the context of metal-on-polyethylene prosthetic hip implants.

Tribol Int 2018 Nov 4;127:568-574. Epub 2018 Jul 4.

Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112, USA.

The longevity of metal-on-polyethylene prosthetic hip implant bearings, in which a polished CoCrMo femoral head articulates with a polyethylene liner, is limited by mechanical instability or inflammation resulting from osteolysis caused by polyethylene wear debris. We use pin-on-disc experiments to measure friction and wear of a polyethylene pin that articulates with different microtextured CoCrMo surfaces, covering a wide range of operating conditions including sliding velocity and contact pressure. We determine how the lubrication regime changes as a function of operating conditions, and show that the microtexture accelerates the transition from boundary to elastohydrodynamic lubrication. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.triboint.2018.07.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6377244PMC
November 2018

Quantifying in situ adaptive immune cell cognate interactions in humans.

Nat Immunol 2019 Feb 18. Epub 2019 Feb 18.

Department of Medicine, Section of Rheumatology and Gwen Knapp Center for Lupus and Immunology Research, University of Chicago, Chicago, IL, USA.

Two-photon excitation microscopy (TPEM) has revolutionized the understanding of adaptive immunity. However, TPEM usually requires animal models and is not amenable to the study of human disease. The recognition of antigen by T cells requires cell contact and is associated with changes in T cell shape. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41590-019-0315-3DOI Listing
February 2019

Cell-cell contact with proinflammatory macrophages enhances the immunotherapeutic effect of mesenchymal stem cells in two abortion models.

Cell Mol Immunol 2019 Feb 18. Epub 2019 Feb 18.

Laboratory for Reproductive Immunology, NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China.

Mesenchymal stem cells (MSCs), which are pluripotent cells with immunomodulatory properties, have been considered good candidates for the therapy of several immune disorders, such as inflammatory bowel diseases, concanavalin A-induced liver injury, and graft-versus-host disease. The embryo is a natural allograft to the maternal immune system. A successful pregnancy depends on the timely extinction of the inflammatory response induced by embryo implantation, followed by the switch to a tolerant immune microenvironment in both the uterus and the system. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41423-019-0204-6DOI Listing
February 2019

Assessing the Dynamics and Control of Droplet- and Aerosol-Transmitted Influenza Using an Indoor Positioning System.

Sci Rep 2019 Feb 18;9(1):2185. Epub 2019 Feb 18.

Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

There is increasing evidence that aerosol transmission is a major contributor to the spread of influenza. Despite this, virtually all studies assessing the dynamics and control of influenza assume that it is transmitted solely through direct contact and large droplets, requiring close physical proximity. Here, we use wireless sensors to measure simultaneously both the location and close proximity contacts in the population of a US high school. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41598-019-38825-yDOI Listing
February 2019