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https://www.readbyqxmd.com/read/28335331/the-use-of-spray-dried-mn%C3%A2-o%C3%A2-c-composites-as-electrocatalysts-for-li-o%C3%A2-batteries
#1
Hong-Kai Yang, Chih-Chun Chin, Jenn-Shing Chen
The electrocatalytic activities of Mn₃O₄/C composites are studied in lithium-oxygen (Li-O₂) batteries as cathode catalysts. The Mn₃O₄/C composites are fabricated using ultrasonic spray pyrolysis (USP) with organic surfactants as the carbon sources. The physical and electrochemical performance of the composites is characterized by X-ray diffraction, scanning electron microscopy, particle size analysis, Brunauer-Emmett-Teller (BET) measurements, elemental analysis, galvanostatic charge-discharge methods and rotating ring-disk electrode (RRDE) measurements...
November 7, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335275/methanol-tolerant-platinum-palladium-catalyst-supported-on-nitrogen-doped-carbon-nanofiber-for-high-concentration-direct-methanol-fuel-cells
#2
Jiyoung Kim, Jin-Sung Jang, Dong-Hyun Peck, Byungrok Lee, Seong-Ho Yoon, Doo-Hwan Jung
Pt-Pd catalyst supported on nitrogen-doped carbon nanofiber (N-CNF) was prepared and evaluated as a cathode electrode of the direct methanol fuel cell (DMFC). The N-CNF, which was directly synthesized by the catalytic chemical vapor deposition from acetonitrile at 640 °C, was verified as having a change of electrochemical surface properties such as oxygen reduction reaction (ORR) activities and the electrochemical double layer compared with common carbon black (CB). To attain the competitive oxygen reduction reaction activity with methanol tolerance, the Pt and Pd metals were supported on the CB or the N-CNF...
August 15, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335264/antimicrobial-properties-of-biofunctionalized-silver-nanoparticles-on-clinical-isolates-of-streptococcus-mutans-and-its-serotypes
#3
Ángel Manuel Martínez-Robles, Juan Pablo Loyola-Rodríguez, Norma Verónica Zavala-Alonso, Rita Elizabeth Martinez-Martinez, Facundo Ruiz, René Homero Lara-Castro, Alejandro Donohué-Cornejo, Simón Yobanny Reyes-López, León Francisco Espinosa-Cristóbal
(1) Background: Streptococcus mutans (S. mutans) is the principal pathogen involved in the formation of dental caries. Other systemic diseases have also been associated with specific S. mutans serotypes (c, e, f, and k). Silver nanoparticles (SNP) have been demonstrated to have good antibacterial effects against S. mutans; therefore, limited studies have evaluated the antimicrobial activity of biofunctionalized SNP on S. mutans serotypes. The purpose of this work was to prepare and characterize coated SNP using two different organic components and to evaluate the antimicrobial activity of SNP in clinical isolates of S...
July 22, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335087/ursolic-acid-and-mechanisms-of-actions-on-adipose-and-muscle-tissue-a-systematic-review
#4
REVIEW
Carlos K Katashima, Vagner R Silva, Tatyanne L Gomes, Claude Pichard, Gustavo D Pimentel
This systematic review aimed at addressing the ursolic acid actions as an adjunctive treatment of the obesity-mediated metabolic abnormalities. To explore our aims, we used the literature search including clinical and animal studies using the Medline and Google Scholar (up to December 2015). Out of 63 screened studies, 17 presented eligibility criteria, such as the use of ursolic acid on adiposity, energy expenditure and skeletal muscle mass in mice and humans. In the literature, we found that several physiological and molecular mechanisms are implicated in the effects of ursolic acid on obesity, energy expenditure, hepatic steatosis, skeletal muscle mass loss and physical fitness, such as (1) increase of thermogenesis by modulation adipocyte transcription factors, activation of 5' adenosine monophosphate-activated protein kinase and overexpression of the uncoupling protein 1 thermogenic marker; (2) enhancement of skeletal muscle mass by activation in bloodstream growth hormone and insulin-like growth factor-1 concentrations secretion, as well as in the activation of mammalian target of rapamycin and inhibition of ring-finger protein-1; and (3) improvement of physical fitness by skeletal muscle proliferator-activated receptor gamma co-activator alpha and sirtuin 1 expression...
March 23, 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28335038/a-comparative-effectiveness-education-trial-for-lifestyle-health-behavior-change-in-african-americans
#5
Chanita Hughes Halbert, Scarlett Bellamy, Vanessa Briggs, Ernestine Delmoor, Joseph Purnell, Rodney Rogers, Benita Weathers, Jerry C Johnson
Obesity and excess weight are significant clinical and public health issues that disproportionately affect African Americans because of physical inactivity and unhealthy eating. We compared the effects of alternate behavioral interventions on obesity-related health behaviors. We conducted a comparative effectiveness education trial in a community-based sample of 530 adult African Americans. Outcomes variables were physical activity (PA) and fruit and vegetable intake. Outcomes were evaluated at baseline and 1-month following interventions about shared risk factors for cancer and cardiovascular disease (CVD) (integrated, INT) or CVD only (disease-specific)...
March 18, 2017: Health Education Research
https://www.readbyqxmd.com/read/28334988/attitudes-and-lifestyle-changes-following-jog-your-mind-results-from-a-multi-factorial-community-based-program-promoting-cognitive-vitality-among-seniors
#6
Sophie Laforest, Agathe Lorthios-Guilledroit, Kareen Nour, Manon Parisien, Michel Fournier, Dave Ellemberg, Danielle Guay, Charles-Émile Desgagnés-Cyr, Nathalie Bier
This study examined the effects on attitudes and lifestyle behavior of Jog your Mind, a multi-factorial community-based program promoting cognitive vitality among seniors with no known cognitive impairment. A quasi-experimental study was conducted. Twenty-three community organizations were assigned either to the experimental group (offering the program) or to the control group (creating a waiting list). They recruited 294 community-dwelling seniors. The aims of the study were to verify the effects of the program on attitudes and behaviors related to cognitive vitality and to explore its effects on cognitive vitality...
February 27, 2017: Health Education Research
https://www.readbyqxmd.com/read/28334909/changes-in-awareness-of-cancer-risk-factors-among-adult-new-zealanders-caanz-2001-to-2015
#7
R Richards, B McNoe, E Iosua, A I Reeder, R Egan, L Marsh, L Robertson, B Maclennan, A Dawson, R Quigg, A-C Petersen
Behaviour change, specifically that which decreases cancer risk, is an essential element of cancer control. Little information is available about how awareness of risk factors may be changing over time. This study describes the awareness of cancer risk behaviours among adult New Zealanders in two cross-sectional studies conducted in 2001 and 2014/5.Telephone interviews were conducted in 2001 (n = 436) and 2014/5 (n = 1064). Participants were asked to recall things they can do to reduce their risk of cancer...
February 27, 2017: Health Education Research
https://www.readbyqxmd.com/read/28334852/conceptualizing-structural-change-in-health-promotion-why-we-still-need-to-know-more-about-theory
#8
Peter Gelius, Alfred Rütten
As recently discussed in the public health literature, many questions concerning 'structural' approaches in health promotion seem to remain unanswered. We argue that, before attempting to provide answers, it is essential to clarify the underlying theoretical assumptions in order to arrive at the right questions one should ask. To this end, we introduce into the current debate an existing theoretical framework that helps conceptualize structural and individual aspects of health promotion interventions at different levels of action...
February 28, 2017: Health Promotion International
https://www.readbyqxmd.com/read/28334801/a-systematic-review-of-the-physical-activity-assessment-tools-used-in-primary-care
#9
Toby O Smith, Máire C McKenna, Charlotte Salter, Wendy Hardeman, Kathryn Richardson, Melvyn Hillsdon, Carly A Hughes, Nicholas Steel, Andy P Jones
Background.: Primary care is an ideal setting for physical activity interventions to prevent and manage common long-term conditions. To identify those who can benefit from such interventions and to deliver tailored support, primary care professionals (e.g. GPs, practice nurses, physiotherapists, health care assistants) need reliable and valid tools to assess physical activity. However, there is uncertainty about the best-performing tool. Objective.: To identify the tools used in the literature to assess the physical activity in primary care and describe their psychometric properties...
February 21, 2017: Family Practice
https://www.readbyqxmd.com/read/28334769/using-affective-judgement-to-increase-physical-activity-in-british-adults
#10
Alice S Forster, Penny Buykx, Neil Martin, Susannah Sadler, Ben Southgate, Lauren Rockliffe, Ian Walker
Mobile phone apps have been shown to increase physical activity (PA), but existing apps fail to target the emotional aspects of PA, which influence whether individuals are active. We developed an app that encourages individuals to focus on the emotional aspects of PA. We aimed to assess the acceptability of this app, and conduct a preliminary evaluation of efficacy. The app was developed in collaboration with users through focus groups. Seven users tested the app over 4 months and provided feedback on acceptability, aesthetics and functionality in a follow-up focus group...
February 27, 2017: Health Promotion International
https://www.readbyqxmd.com/read/28334765/the-operational-context-of-care-sport-connectors-in-the-netherlands
#11
K E F Leenaars, E C van der Velden-Bollemaat, E Smit, A Wagemakers, G R M Molleman, M A Koelen
To stimulate physical activity (PA) and guide primary care patients towards local sport facilities, Care Sport Connectors (CSCs), to whom a broker role has been ascribed, were introduced in 2012 in the Netherlands. The aim of this study is to describe CSCs' operational context. A theoretical framework was developed and used as the starting point for this study. Group interviews were held with policymakers in nine participating municipalities, and, when applicable, the CSC's manager was also present. Prior to the interviews, a first outline of the operational context was mapped, based on the analysis of policy documents and a questionnaire completed by the policymakers...
February 22, 2017: Health Promotion International
https://www.readbyqxmd.com/read/28334677/centralized-management-of-sewage-sludge-and-agro-industrial-waste-through-co-composting
#12
M C Gutiérrez, A Serrano, J A Siles, A F Chica, M A Martín
In this research study, the co-composting process of a waste mixture containing strawberry extrudate, fish waste, sewage sludge and bulking agent (SEFW, 190:1:22:90 ratio) was carried out in a dynamic-solid respirometer at pilot scale. The aerobic biodegradability of the mixture was previously ensured in a static-liquid respirometer. The advantages and drawbacks of the SEFW co-composting process were subsequently identified through the determination of respirometric activity and the physical-chemical characterization of the waste, as well as the monitoring of odor emissions...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28334638/targeted-physical-activity-messages-for-parents-of-children-with-disabilities-a-qualitative-investigation-of-parents-informational-needs-and-preferences
#13
R L Bassett-Gunter, R J Ruscitti, A E Latimer-Cheung, J L Fraser-Thomas
BACKGROUND AND AIM: Physical activity (PA) has myriad benefits for children with disabilities (CWD). Information and messaging campaigns can promote PA among CWD. The overall purpose of the study was to gain an understanding of the development of PA information and messages targeting parents of CWD. The specific objectives were to identify parents' preferences regarding PA information and messaging content and preferred methods and sources of communication. METHOD: Focus groups were conducted with parents of CWD (N=28)...
March 20, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28334558/feasibility-and-added-value-of-executive-walkrounds-in-long-term-care-organizations-in-the-netherlands
#14
Loes van Dusseldorp, Getty Huisman-de Waal, Hub Hamers, Gert Westert, Lisette Schoonhoven
BACKGROUND: Currently available tools for the management of safety in health care are largely based on quantitative management information. Executive WalkRounds (WalkRounds [WR]) seems useful as a leadership tool to detect "soft signals"-alerts of unsafe situations or practices-and to enhance the mutual trust between frontline staff and the board of directors. The majority of the research on WR has been performed in hospitals. Therefore, a study was conducted to assess how the boards of directors of long term care organizations value WR as a leadership tool to perceive soft signals, and whether soft signals are of added value to enhance patient safety...
December 2016: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28334528/why-prodrugs-and-propesticides-succeed
#15
John E Casida
What are the advantages of bioactivation in optimizing drugs and pesticides? Why are there so many prodrugs and propesticides? These questions are examined here by considering compounds selected on the basis of economic value or market success. The 100 major drugs and 90 major pesticides are divided into ones acting directly and those definitely or possibly requiring bioactivation. Established or candidate prodrugs accounted for 19% of the total drug sales with corresponding values of 20, 37 and 17% for proinsecticides, proherbicides and profungicides...
March 23, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28334519/perspectives-of-health-and-self-care-among-older-persons-to-be-implemented-in-an-interactive-ict-platform
#16
Carina Göransson, Yvonne Wengström, Kristina Ziegert, Ann Langius-Eklöf, Irene Eriksson, Annica Kihlgren, Karin Blomberg
AIM AND OBJECTIVES: To acquire knowledge regarding the contents to be implemented in an interactive ICT-platform perceived to be relevant to health and self-care among older persons based on the literature, healthcare professionals and the older persons themselves. BACKGROUND: The growing ageing population places demands on the healthcare system to promote healthy ageing and to strengthen the older person's self-care ability. This requires innovative approaches to facilitate communication between the older person and healthcare professionals, and to increase the older person's participation in their care...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28334501/unravelling-a-direct-role-for-polysaccharide-%C3%AE-strands-in-the-higher-order-structure-of-physical-hydrogels
#17
Anja Rüther, Aurelien Forget, Anjan Roy, Carolina Carballo, Florian Mießmer, Rina K Dukor, Laurence A Nafie, Christian Johannessen, V Prasad Shastri, Steffen Lüdeke
The mechanical properties of agarose-derived hydrogels depend on the scaffolding of the polysaccharide network. To identify and quantify such higher order structure, we applied Raman optical activity (ROA)-a spectroscopic technique that is highly sensitive toward carbohydrates-on native agarose and chemically modified agarose in the gel phase for the first time. By spectral global fitting, we isolated features that change as a function of backbone carboxylation (28, 40, 50, 60, 80, and 93 %) from other features that remain unchanged...
March 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28334483/activities-of-daily-living-trajectories-among-institutionalized-older-adults-a-prospective-study
#18
Huai-Ting Kuo, Kuan-Chia Lin, Chung-Fu Lan, I-Chuan Li
AIMS AND OBJECTIVES: To examine ADL trajectory groups among older residents in Taiwan, and to determine the relative risks of demographic characteristics and health status in explaining the trajectory group of ADL. BACKGROUND: Activity of daily living (ADL) is a crucial indicator of health status for institutionalized older adults. ADL is a dynamic process, and has differences in trajectory groups. DESIGN: This study was a 3-year longitudinal analysis of long-term care (LTC) facility residents in Taiwan...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28334019/cell-survival-and-differentiation-with-nanocrystalline-glass-like-carbon-using-substantia-nigra-dopaminergic-cells-derived-from-transgenic-mouse-embryos
#19
Noela Rodriguez-Losada, Pablo Romero, Guillermo Estivill-Torrús, Roberto Guzmán de Villoria, Jose A Aguirre
Regenerative medicine requires, in many cases, physical supports to facilitate appropriate cellular architecture, cell polarization and the improvement of the correct differentiation processes of embryonic stem cells, induced pluripotent cells or adult cells. Because the interest in carbon nanomaterials has grown within the last decade in light of a wide variety of applications, the aim of this study was to test and evaluate the suitability and cytocompatibility of a particular nanometer-thin nanocrystalline glass-like carbon film (NGLC) composed of curved graphene flakes joined by an amorphous carbon matrix...
2017: PloS One
https://www.readbyqxmd.com/read/28333751/early-physical-activity-may-reduce-postconcussion-symptoms-in-children-and-adolescents
#20
Karen Rosenberg
No abstract text is available yet for this article.
April 2017: American Journal of Nursing
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