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Structural health monitoring

Kirsten Haas, Stephanie Stangl, Frank Steigerwald, Cordula Matthies, Doreen Gruber, Andrea A Kühn, Joachim K Krauss, Friederike Sixel-Döring, Kajetan von Eckardstein, Günther Deuschl, Joseph Classen, Dirk Winkler, Jürgen Voges, Imke Galazky, Wolfgang Oertel, Andres O Ceballos-Baumann, Max Lange, Alireza Gharabaghi, Daniel T Weiss, Jens Volkmann, Peter U Heuschmann
INTRODUCTION: Deep Brain Stimulation (DBS) is a complex, invasive and cost-intensive therapy that requires a high level of expertise. To date, data on quality of DBS in clinical routine in the German health care system are lacking. METHODS: The development of evidence-based QIs for DBS in PD patients was performed following a standardized process by a multidisciplinary board between 2014 and 2016. The process was initiated by the German Parkinson Society and followed international recommendations for developing QIs including: a systematic literature search; an appraisal of the published evidence; a consensus-based selection of the QI set; and a pilot study to assess the feasibility in implementing the QIs in clinical routine...
February 5, 2019: Parkinsonism & related Disorders
Liuxian Zhao, Shengxi Zhou
Acoustic rainbow trappers, based on frequency selective structures with graded geometries and/or properties, can filter mechanical waves spectrally and spatially to reduce noise and interference in receivers. These structures are especially useful as passive, always-on sensors in applications such as structural health monitoring. For devices that face space and weight constraints, such as microelectromechanical systems (MEMS) transducers and artificial cochleae, the rainbow trapping structures must be compact as well...
February 15, 2019: Sensors
Lei Zhang, Zahid Hussain, Zhuanqin Ren
BACKGROUND: Normal pressure hydrocephalus (NPH) is a critical brain disorder in which excess cerebrospinal fluid (CSF) is accumulated in the brain's ventricles causing damage or disruption of the brain tissues. Amongst various signs and symptoms, difficulty in walking, blurred speech, impaired decision making and critical thinking, and loss of bladder and bowl control are considered the hallmark features of NPH. OBJECTIVE: The current review was aimed to present a comprehensive overview and critical appraisal of majorly employed neuroimaging techniques for rational diagnosis and effective monitoring of effectiveness of employed therapeutic intervention for NPH...
February 14, 2019: Current Drug Targets
Aurysia Hii, Abrar Ahmad Chughtai, Tambri Housen, Salanieta Saketa, Mohana Priya Kunasekaran, Feroza Sulaiman, Nk Semara Yanti, Chandini Raina MacIntyre
Objective: To understand the global outbreak surveillance needs of stakeholders involved in epidemic response in selected countries and areas in the Asia-Pacific region to inform development of an epidemic observatory, Epi-watch. Methods: We designed an online, semi-structured stakeholder questionnaire to collect information on global outbreak surveillance sources and limitations from participants who use epidemic intelligence and outbreak alert services in their work in government and nongovernment organizations in the Asia-Pacific region...
October 2018: Western Pacific Surveillance and Response Journal: WPSAR
Mirjam Simoons, Henricus G Ruhé, Eric N van Roon, Robert A Schoevers, Richard Bruggeman, Daniëlle C Cath, Diny Muis, Johan Arends, Bennard Doornbos, Hans Mulder
BACKGROUND: At many outpatient departments for psychiatry worldwide, standardized monitoring of the safety of prescribed psychotropic drugs is not routinely performed in daily clinical practice. Therefore it is unclear to which extent the drugs used by psychiatric outpatients are prescribed effectively and safely. These issues warrant structured monitoring of medication use, (pre-existing) co-morbidities, effectiveness and side effects during psychiatric outpatient treatment. Improvement of monitoring practices provides an opportunity to ensure that somatic complications and adverse drug effects are detected and dealt with in a timely manner...
February 14, 2019: BMC Health Services Research
Botao Xie, Jinke Li, Xuefeng Zhao
Smartphones which are built into the suite of sensors, network transmission, data storage, and embedded processing capabilities provide a wide range of response measurement opportunities for structural health monitoring (SHM). The objective of this work was to evaluate and validate the use of smartphones for monitoring damage states in a three-dimensional (3D) steel frame structure subjected to shaking table earthquake excitation. The steel frame is a single-layer structure with four viscous dampers mounted at the beam-column joints to simulate different damage states at their respective locations...
February 12, 2019: Sensors
Venkadesh Raman, Monssef Drissi-Habti, Preshit Limje, Aghiad Khadour
Designing of new generation offshore wind turbine blades is a great challenge as size of blades are getting larger (typically larger than 100 m). Structural Health Monitoring (SHM), which uses embedded Fiber Optics Sensors (FOSs), is incorporated in critical stressed zones such as trailing edges and spar webs. When FOS are embedded within composites, a 'penny shape' region of resin concentration is formed around the section of FOS. The size of so-formed defects are depending on diameter of the FOS. Penny shape defects depend of FOS diameter...
February 12, 2019: Sensors
Regan L Bailey, Kevin W Dodd, Jaime J Gahche, Johanna T Dwyer, Alexandra E Cowan, Shinyoung Jun, Heather A Eicher-Miller, Patricia M Guenther, Anindya Bhadra, Paul R Thomas, Nancy Potischman, Raymond J Carroll, Janet A Tooze
The use of dietary supplements (DS) is pervasive and can provide substantial amounts of micronutrients to those who use them. Therefore when characterizing dietary intakes, describing the prevalence of inadequacy or excess, or assessing relations between nutrients and health outcomes, it is critical to incorporate DS intakes to improve exposure estimates. Unfortunately, little is known about the best methods to assess DS, and the structure of measurement error in DS reporting. Several characteristics of nutrients from DS are salient to understand when comparing to those in foods...
February 8, 2019: Journal of Nutrition
Amandeep Kaur, Elizabeth J New
The availability of electrons to biological systems underpins the mitochondrial electron transport chain (ETC) that powers living cells. It is little wonder, therefore, that the sufficiency of electron supply is critical to cellular health. Considering mitochondrial redox activity alone, a lack of oxygen (hypoxia) leads to impaired production of adenosine triphosphate (ATP), the major energy currency of the cell, whereas excess oxygen (hyperoxia) is associated with elevated production of reactive oxygen species (ROS) from the interaction of oxygen with electrons that have leaked from the ETC...
February 12, 2019: Accounts of Chemical Research
Ahmed Ben Abdelaziz, Sina Haj Amor, Ines Ayadi, Mohamed Khelil, Chokri Zoghlami, Sami Ben Abdelfattah
CONTEXT: As part of its strategy of Universal Health Coverage (UHC), Tunisia has calculated, after its revolution, its Health Accounts (HA), in a standardized and interdepartmental way. OBJECTIVES: Describe the current structure of care financing in Tunisia, through the HA reports, from 2012 to 2014, and assess its compliance with the principles of socialization of health insurance. METHODS: Crude data on health care expenditures were collected by a multi-departmental group that is responsible for calculating health accounts, using a methodology developed by WHO...
October 2018: La Tunisie Médicale
Frank Mevissen, Michele Meo
The need for non-destructive testing/structural health monitoring (SHM) is becoming increasingly important for gas turbine manufacturers. Incipient cracks have to be detected before catastrophic events occur. With respect to condition-based maintenance, the complex and expensive parts should be used as long as their performance or integrity is not compromised. In this study, the main failure modes of turbines are reported. In particular, we focus on the turbine blades, turbine vanes and the transition ducts of the combustion chambers...
February 9, 2019: Sensors
Chen Wang, Guanqun Su, Xin Wang, Shengdong Nie
Most of the health hazards in fried foods are related to unqualified frying oil and excessive oil content. In this study, the feasibility of using low-field nuclear magnetic resonance techniques (LF-NMR) for analysis the water and oil contents in French fries, as well as simultaneous evaluation of frying oil quality during deep-frying was investigated. Three proton populations were identified and successfully assigned to water and oil relaxation signals. Significant correlation between the T2 relaxation parameters (Awater and RCoil) and the water and oil content was acquired...
February 11, 2019: Journal of Agricultural and Food Chemistry
Turkan Tuncer, Arzu Kaya, Arif Gulkesen, Gul Ayden Kal, Dilara Kaman, Gurkan Akgol
BACKGROUND: Rheumatoid arthritis (RA) is a chronic inflammatory and systemic disease of unknown etiology that primarily affects synovial joints and involves progressive destruction around the joints. Inflammation starting in the joint synovium causes the destruction of cartilage, bone and other adjacent tissues with pannus formation. OBJECTIVES: The aim of this study was to evaluate serum matrix metalloproteinase-3 (MMP-3) levels and their clinical and radiological significance in patients with rheumatoid arthritis...
February 8, 2019: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Xiaoyu Hu, Yuanyuan Dou, Jingjing Li, Zunfeng Liu
Wearable electronics have attracted a tremendous amount of attention due to their many potential applications, such as personalized health monitoring, motion detection, and smart clothing, where electronic devices must conformably form contacts with curvilinear surfaces and undergo large deformations. Structural design and material selection have been the key factors for the development of wearable electronics in the recent decades. As one of the most widely used geometries, buckling structures endow high stretchability, high mechanical durability, and comfortable contact for human-machine interaction via wearable devices...
February 10, 2019: Small
Xueyuan Wu, Chi-Kin Law, Paul Siu Fai Yip
To assess the impact of ageing on hospitalisation in a rapidly ageing society. A study using retrospective and prospective data was conducted using hospitalisation data with age-specific admission rates in the period from 2001⁻2010 and demographic data from the period of 2001⁻2066 by the United Nations. The Hong Kong Special Administrative Region (SAR) with a 7 million population experiences extreme low fertility (1.1 children per woman) and long life expectancy (84 years old). Days of hospitalisation: For the period 2010⁻2066, the length of stay (LOS) in the age group 85+ is projected to increase by 555...
February 6, 2019: International Journal of Environmental Research and Public Health
Brea L Perry, Gabriele Ciciurkaite
Social influence is a key determinant of health behaviors and outcomes. Research in the social network tradition emphasizes social structural mechanisms like network content (i.e., the degree to which particular attitudes, attributes, or behaviors are present in the network) and social proximity (i.e., opportunities for social interaction). In contrast, psychologists are oriented toward the individual, identifying how personality traits like self-monitoring affect susceptibility to peer pressure. Here, we integrate social network and personality approaches, examining social influence on body size using surveys of 379 adults with dependent children...
January 28, 2019: Social Science & Medicine
Muhammad Amir Khan, John D Walley, Saima Ali, Rebecca King, Shaheer Ellahi Khan, Nida Khan, Faisal Imtiaz Sheikh, Haroon Jehangir Khan
Background: Integrated care for diabetes and associated conditions at primary level health facilities can make care available to a much larger population, especially in rural areas. Aim: This process evaluation was to understand how the authors' integrated care was implemented and experienced by the care providers and patients, and to inform modifications prior to province-wide scale-up. Design & setting: The mixed-method study was conducted as part of a cluster randomised trial on integrated diabetes care at 14 public health facilities...
December 2018: BJGP Open
Daniel Cruz, Yubelky Rodriguez, Christina Mastropaolo
The current study examined the psychometric properties of the Microaggressions in Health Care Scale (MHCS), including factor structure, measurement invariance, and internal consistency reliability. We used a cross-sectional research design to study perceived racial microaggressions, discrimination, and mental health in 296 African American and Latino respondents. Participants completed measures that assess healthcare microaggressions and daily discrimination as well as the Depression, Anxiety and Stress Scale (DASS-21)...
2019: PloS One
Michel Nicolas, Philippe Vacher, Guillaume Martinent, Laurent Mourot
Background: Psychological stress and recovery monitoring is a key issue for increasing athletes' health, well-being, and performance. This multi-study report examined changes and the dose-response relationships between recovery-stress psychological states, training load (TL), heart rate (HR), heart rate recovery (HRR), and heart rate variability (HRV) while providing evidence for the factorial validity of a short French version of the Recovery-Stress Questionnaire for Athletes (RESTQ-36-R-Sport)...
January 2019: Journal of Sport and Health Science
Caleb Acquah, Dominic Agyei, Eugene Marfo Obeng, Sharadwata Pan, Kei Xian Tan, Michael Kobina Danquah
The food and health applications of bioactive peptides have grown remarkably in the past few decades. Current elucidations have shown that bioactive peptides have unique structural arrangement of amino acids, conferring distinct functionalities, and molecular affinity characteristics. However, whereas interest in the biological potency of bioactive peptides has grown, cost-effective techniques for monitoring the structural changes in these peptides and how these changes affect the biological properties have not grown at the same rate...
February 4, 2019: Critical Reviews in Food Science and Nutrition
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