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Louise Moody, Janet Saunders, Marjan Leber, Marzena Wójcik-Augustyniak, Marek Szajczyk, Nataša Rebernik
BACKGROUND: The European Disability Strategy (2010-2020) seeks to significantly raise the proportion of people with disabilities working in the open labour market. The ERGO WORK project is a collaboration of academic and industrial partners in six European countries, focused on understanding and tackling barriers to workplace inclusion for workers with disabilities. METHODS: This study sought to explore the perceptions and needs of stakeholders in terms of workplace adaptation to the needs of employees with disabilities...
September 24, 2016: Disability and Rehabilitation
Marek Kirs, Roberto A Caffaro-Filho, Mayee Wong, Valerie J Harwood, Philip Moravcik, Roger S Fujioka
: Identification of sources of fecal contaminants is needed to: 1) determine the health risk associated with recreational water use, and 2) implement appropriate management practices to mitigate this risk and protect the environment. This study evaluated human-associated Bacteroides (HF183TaqMan) and human polyomavirus (HPyV) markers for host sensitivity and specificity using human and animal fecal samples collected in Hawaii. The decay rates of those markers and indicator bacteria were identified in marine and freshwater microcosms exposed and not exposed to sunlight, followed by field testing of the usability of the molecular markers...
September 9, 2016: Applied and Environmental Microbiology
Sankararao Mutyala, Jayaraman Mathiyarasu
Herein, we report a simple, facile and reproducible non-enzymatic hydrogen peroxide (H2O2) sensor using electrochemically reduced graphene oxide (ERGO) modified glassy carbon electrode (GCE). The modified electrode was characterized by Fourier transform infrared (FT-IR), UV-Visible, scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques. Cyclic voltammetric (CV) analysis revealed that ERGO/GCE exhibited virtuous charge transfer properties for a standard redox systems and showed excellent performance towards electroreduction of H2O2...
December 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
Suhua Fan, Jiao Yang, Ting Wei, Jie Zhang, Ni Zhang, Mengqing Chai, Xiaoyan Jin, Hai Wu
In this paper, a p-methoxy zinc porphyrin-fullerene derivative (ZnPp-C60) noncovalently functionalized electrochemically reduced graphene oxide (ERGO) hybrid (ERGO@ZnPp-C60) was facilely obtained by π-π stacking interaction between zinc porphyrin ring and ERGO. The hybrid was characterized by scanning electron microscope (SEM), electrochemistry, UV-vis spectra, and density functional theory (DFT), which demonstrated that the presence of ERGO caused more redox reversibility and higher electrocatalytic activity of ZnPp-C60...
November 1, 2016: Talanta
Sakda Jampasa, Weena Siangproh, Kiattisak Duangmal, Orawon Chailapakul
A simple and highly sensitive electrochemical sensor based on an electrochemically reduced graphene oxide-modified screen-printed carbon electrode (ERGO-SPCE) for the simultaneous determination of sunset yellow (SY) and tartrazine (TZ) was proposed. An ERGO film was coated onto the electrode surface using a cyclic voltammetric method and then characterized by scanning electron microscopy (SEM). In 0.1M phosphate buffer at a pH of 6, the two oxidation peaks of SY and TZ appeared separately at 0.41 and 0.70V, respectively...
November 1, 2016: Talanta
Changsong Chen, Na Wang, Peng Zhou, Haisheng San, Kaiying Wang, Xuyuan Chen
We report a novel betavoltaic device with significant conversion efficiency by using electrochemically reduced graphene oxide (ERGO) on TiO2 nanotube arrays (TNTAs) for enhancing the absorption of beta radiation as well as the transportation of carriers. ERGO on TNTAs (G-TNTAs) were prepared by electrochemical anodization and subsequently cyclic voltammetry techniques. A 10 mCi of (63)Ni/Ni source was assembled to G-TNTAs to form the sandwich-type betavoltaic devices (Ni/(63)Ni/G-TNTAs/Ti). By I-V measurements, the optimum betavoltaic device exhibits a significant effective energy conversion efficiency of 26...
September 21, 2016: ACS Applied Materials & Interfaces
Sarina Saimbi, Valerie Madden, Heather Stirling, Asma Yahyouche, Hannah Batchelor
BACKGROUND: Children's medicines are not always readily available as an age appropriate product and manipulation of adult products is often required. Recently the commercial manufacturing process for 10 mg hydrocortisone tablets has changed and the compression force increased due to tablets fracturing on removal from the blister pack. However, this change led to parents of children requiring hydrocortisone reporting that the tablets were more difficult to manipulate.This study evaluated 10 mg hydrocortisone tablets for their suitability for manipulation in order to deliver an appropriate dose to children (2 mg dose)...
September 2016: Archives of Disease in Childhood
Sheetal K Bhardwaj, Premlata Yadav, Subhasis Ghosh, Tinku Basu, Ajit K Mahapatro
The development of an efficient test-bed for biosensors requires stable surfaces, capable of interacting with the functional groups present in bioentities. This work demonstrates the formation of highly stable electrochemically reduced graphene oxide (ERGO) thin films reproducibly on indium tin oxide (ITO)-coated glass substrates using a reliable technique through 60 s chronoamperometric reduction of a colloidal suspension maintained at neutral pH containing graphene oxide in deionized water. Structural optimization and biocompatible interactions of the resulting closely packed and uniformly distributed ERGO flakes on ITO surfaces (ERGO/ITO) are characterized using various microscopic and spectroscopic tools...
September 21, 2016: ACS Applied Materials & Interfaces
Lawrence Grouse
No abstract text is available yet for this article.
July 2016: Journal of Thoracic Disease
Susy Purnawati, Norito Kawakami, Akihito Shimazu, Dewa Putu Sutjana, Nyoman Adiputra
The present work describes a newly developed ergonomics-based job stress management program - Ergo-JSI (Ergonomics-based Job Stress Intervention) - including a pilot study to ascertain the effects of the program on job strain, psychological distress, and blood cortisol levels among bank employees in Indonesia. A single-group, pre- and post-test experimental study was conducted in a sample of employees in a National Bank in Denpasar, Bali, Indonesia. The outcomes of the study focused on reductions in job strain index and psychological distress, measured by the Indonesian version of the Brief Job Stress Questionnaire (BJSQ), and improvement in blood cortisol levels following the study...
August 6, 2016: Industrial Health
Michael Lachmann, Eric Libby
Differentiation within multicellular organisms is controlled by epigenetic markers transmitted across cell division. The process of differentiation will modify these epigenetic markers so that information that one cell type possesses can be lost in the transition to another. Many of the systems that encode these markers also exist in unicellular organisms but do not control differentiation. Thus, during the evolution of multicellularity, epigenetic inheritance systems were probably exapted for their current use in differentiation...
August 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Hyoung Soon Han, Mohammad Shamsuddin Ahmed, Haesang Jeong, Seungwon Jeon
We investigated the relationship between the linker's length and the electrooxidation of methanol and ethanol with PtNPs-decorated graphene oxide (GO). The covalently functionalized materials were prepared with three different lengths of the alkane chain as the linker molecules in between GO and platinum nanoparticles (PtNPs). Electrochemically reduced GO-S-(CH₂)n-S-Pt [ERGO-S-(CH₂)n- S-Pt, wherein n = 2, 3 and 4] was obtained via electrochemical reduction of GO-S-(CH2)1-S-Pt in PBS at pH 5. ERGO-S-(CH₂)n-S-Pt was characterized by XPS and FE-SEM...
January 2016: Journal of Nanoscience and Nanotechnology
Zhenting Zhao, Yongjiao Sun, Pengwei Li, Wendong Zhang, Kun Lian, Jie Hu, Yong Chen
A highly sensitive electrochemical sensor of hydrazine has been fabricated by Au nanoparticles (AuNPs) coating of carbon nanotubes-electrochemical reduced graphene oxide composite film (CNTs-ErGO) on glassy carbon electrode (GCE). Cyclic voltammetry and potential amperometry have been used to investigate the electrochemical properties of the fabricated sensors for hydrazine detection. The performances of the sensors were optimized by varying the CNTs to ErGO ratio and the quantity of Au nanoparticles. The results show that under optimal conditions, a sensitivity of 9...
September 1, 2016: Talanta
Şafak Ulusoy, Özkan Özden, Olaf Päpke
Mussel samples were collected monthly between October-2010 and October-2011 from four stations (Bosphorus, Bandırma, Gelibolu, Tekirdağ) in the Marmara Sea. Two consecutive months' samples were homogenized and combined as a single group for analysis. Mussel samples were analyzed for Organochlorine pesticides (OCPs); (total-DDT, total-HCH, Endrin, α-Endosulfan, β-Endosulfan, Heptachlor) and Polychlorinated biphenyls (PCBs); (PCB 28, PCB 52, PCB 138, PCB 153, and PCB 180). All analyses were done according to Eurofins house method in ERGO Laboratory in Germany...
August 2016: Bulletin of Environmental Contamination and Toxicology
Marco P Carvalho, Elisabete C Costa, Sónia P Miguel, Ilídio J Correia
Two-dimensional (2D) cell culture is the main methodology used for screening anticancer therapeutics. However, these 2D cellular models misrepresent the architecture of native tumors, leading, in some cases, to unsuccessful prediction of cancer cell response to drugs. To overcome such limitations, cell growth in three dimensions (3D) arises as an alternative to reproduce in vitro the cellular arrangement found in tumors. Among the 3D cancer models developed so far, spheroids are the most attractive since these are cellular aggregates that broadly mimic many features of solid tumors affecting humans, like cell-cell interactions...
October 5, 2016: Carbohydrate Polymers
Jaroslav Filip, Anita Andicsová-Eckstein, Alica Vikartovská, Jan Tkac
Previously we showed that an effective bilirubin oxidase (BOD)-based biocathode using graphene oxide (GO) could be prepared in 2 steps: 1. electrostatic adsorption of BOD on GO; 2. electrochemical reduction of the BOD-GO composite to form a BOD-ErGO (electrochemically reduced GO) film on the electrode. In order to identify an optimal charge density of GO for BOD-ErGO composite preparation, several GO fractions differing in an average flake size and ζ-potential were prepared using centrifugation and consequently employed for BOD-ErGO biocathode preparation...
June 5, 2016: Biosensors & Bioelectronics
Ridha Ben Cheikh, Imed Latiri, Mohamed Dogui, Helmi Ben Saad
BACKGROUND: Most of the available literature related to aspects of sleep-deprivation is primarily focused on memory and learning and studies regarding its effects on selective- attention and/or physical performance especially the isometric-force are scarce. Moreover, the available literature included general population or some team sports (eg; volleyball). However, only few studies were done on athletes involved in combat sports (eg; Karate). The aim of the present study was to determine the effects of a total one-night-sleep- deprivation (NSD) on activator- and inhibitor-processes of selective-attention and on maximal-isometric-force in Karate athletes...
May 31, 2016: Journal of Sports Medicine and Physical Fitness
Helen Cullington, Padraig Kitterick, Lisa DeBold, Mark Weal, Nicholas Clarke, Eva Newberry, Lisa Aubert
INTRODUCTION: Many resources are required to provide postoperative care to patients who receive a cochlear implant. The implant service commits to lifetime follow-up. The patient commits to regular adjustment and rehabilitation appointments in the first year and annual follow-up appointments thereafter. Offering remote follow-up may result in more stable hearing, reduced patient travel expense, time and disruption, more empowered patients, greater equality in service delivery and more freedom to optimise the allocation of clinic resources...
2016: BMJ Open
Ezrin Hani Sukadarin, Baba Md Deros, Jaharah A Ghani, Nur Syazwani Mohd Nawi, Ahmad Rasdan Ismail
INTRODUCTION: This review describes standardized ergonomics assessment based on pen-and-paper observational methods for assessing ergonomics risk factors. OBJECTIVE: The three main objectives are to analyze published pen-and-paper observational methods, to extract and understand the risk levels of each method and to identify their associated health effects. METHODOLOGY: The authors searched scientific databases and the Internet for materials from 1970 to 2013 using the following keywords: ergo, posture, method, observational, postural angle, health effects, pain and diseases...
September 2016: International Journal of Occupational Safety and Ergonomics: JOSE
B Resan, S Kurmulis, Z Y Zhang, A E H Oehler, V Markovic, M Mangold, T Südmeyer, U Keller, R A Hogg, K J Weingarten
Semiconductor saturable absorber mirror (SESAM) modelocked high pulse repetition rate (≥10  GHz) diode-pumped solid-state lasers are proven as an enabling technology for high data rate coherent communication systems owing to their low noise and high pulse-to-pulse optical phase-coherence. Compared to quantum well, quantum dot (QD)-based SESAMs offer potential advantages to such laser systems in terms of reduced saturation fluence, broader bandwidth, and wavelength flexibility. Here, we describe the first 10 GHz pulse repetition rate QD-SESAM modelocked laser at 1...
May 10, 2016: Applied Optics
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