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https://www.readbyqxmd.com/read/28527398/quantitative-comparison-between-real-space-and-bloch-wave-methods-in-image-simulation
#1
Yi Yang, Qibin Yang, Jianyu Huang, Canying Cai, Jianguo Lin
Both Bloch wave (BW) and real space multislice (RS-MS) methods are based on the Schrödinger equation. The BW method is considered to be the most accurate and popular simulation method used in various simulations, and it has solved many crystallographic problems. In this paper, we verified that the aforementioned two methods are similar to each other with minor difference. First, the RS-MS method is implemented in the real space, while the BW method is carried out in the reciprocal space. Furthermore, by quantitatively calculating exit wavefunctions of four crystals, i...
April 27, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28527379/diagnosing-water-security-in-the-rural-north-with-an-environmental-security-framework
#2
Henry J F Penn, Philip A Loring, William E Schnabel
This study explores the nature of water security challenges in rural Alaska, using a framework for environmental security that entails four interrelated concepts: availability, access, utility, and stability of water resources. Many researchers and professionals agree that water insecurity is a problem in rural Alaska, although the scale and nature of the problem is contested. Some academics have argued that the problem is systemic, and rooted in an approach to water security by the state that prioritizes economic concerns over public health concerns...
May 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28527280/-pperformance-of-led-fluorescence-microscopy-for-the-detection-of-acid-fast-bacilli-from-respiratory-samples-in-peripheral-laboratories-in-argentina
#3
María Imaz, Sonia Allassia, Mónica Aranibar, Alba Gunia, Susana Poggi, Ana Togneri, Lidia Wolff, Group Of Implementation Of Fluorescence
INTRODUCTION: Light-emitting diode fluorescence microscopy (LED-FM) has been endorsed by the World Health Organization (WHO) for tuberculosis diagnosis, but its accuracy in HIV-infected patients remains controversial, and only some few studies have explored procedural factors that may affect its performance. OBJECTIVE: To evaluate the performance of LED-FM for tuberculosis diagnosis in patients with and without HIV infection using a newer, less expensive LED lamp...
June 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527253/-prevalence-of-mycobacterium-tuberculosis-resistance-to-quinolones-and-injectables-in-colombia-2012-2013
#4
Claudia Llerena, Angie Zabaleta, Angélica Valbuena, Martha Murcia
INTRODUCTION: Tuberculosis is a health problem worldwide. The World Health Organization estimated 9.6 million new cases and 480,000 multirresistant cases for 2014. The assessment of resistance to quinolones and injectables was implemented only a few years ago, so its prevalence is not known. OBJECTIVE: To determine the prevalence of resistance to amikacin, capreomycin and ofloxacin in cases of tuberculosis resistant to isoniazid and/or rifampin during 2012-2013...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527235/implementing-the-icf-in-occupational-health-building-a-curriculum-as-an-exemplary-case
#5
C P M de Brouwer, L G P M van Amelsvoort, Y F Heerkens, G A M Widdershoven, I J Kant
BACKGROUND: This paper addresses the need for a paradigm shift from post-diagnosis tertiary care towards maintenance and promotion of health across the lifespan, for healthcare in general and in occupational healthcare specifically. It is based on the assumption that the realization of this paradigm shift may be facilitated by teaching (future) occupational health professionals to use the International Classification of Functioning, Disability and Health (ICF). OBJECTIVE: Describing the development of a an ICF based occupational health curriculum...
May 17, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28527100/parents-expectations-of-high-schools-in-firearm-violence-prevention
#6
Erica Payton, Jagdish Khubchandani, Amy Thompson, James H Price
Firearm violence remains a significant problem in the US (with 2787 adolescents killed in 2015). However, the research on school firearm violence prevention practices and policies is scant. Parents are major stakeholders in relation to firearm violence by youths and school safety in general. The purpose of this study was to examine what parents thought schools should be doing to reduce the risk of firearm violence in schools. A valid and reliable questionnaire was mailed to a national random sample of 600 parents who had at least one child enrolled in a public secondary school (response rate = 47%)...
May 19, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/28527071/cost-of-medication-overuse-headache-in-italian-patients-at-the-time-point-of-withdrawal-a-retrospective-study-based-on-real-data
#7
Domenico D'Amico, Licia Grazzi, Marcella Curone, Matilde Leonardi, Alberto Raggi
The objective was to assess the cost of Medication Overuse Headache (MOH) at the time-point of withdrawal treatment. We implemented a protocol in which both direct and indirect cost were directly gathered from patients and referred to the previous three months. Direct costs were calculated by medications for acute treatment and prophylaxis, diagnostic procedures, visits, complementary treatments, informal care. Indirect costs were referred to missed workdays and workdays with reduced productivity: we asked patients to refer their salaries and to rate the overall level of performance in days worked with reduced productivity, and we calculated indirect costs on this basis...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28527048/interpreting-findings-from-mendelian-randomization-using-the-mr-egger-method
#8
Stephen Burgess, Simon G Thompson
Mendelian randomization-Egger (MR-Egger) is an analysis method for Mendelian randomization using summarized genetic data. MR-Egger consists of three parts: (1) a test for directional pleiotropy, (2) a test for a causal effect, and (3) an estimate of the causal effect. While conventional analysis methods for Mendelian randomization assume that all genetic variants satisfy the instrumental variable assumptions, the MR-Egger method is able to assess whether genetic variants have pleiotropic effects on the outcome that differ on average from zero (directional pleiotropy), as well as to provide a consistent estimate of the causal effect, under a weaker assumption-the InSIDE (INstrument Strength Independent of Direct Effect) assumption...
May 19, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28527040/fundamental-principles-of-an-anti-vegf-treatment-regimen-optimal-application-of-intravitreal-anti-vascular-endothelial-growth-factor-therapy-of-macular-diseases
#9
REVIEW
Paolo Lanzetta, Anat Loewenstein
BACKGROUND: Intravitreal anti-vascular endothelial growth factor (VEGF) therapy is now considered the gold standard for the treatment of various retinal disorders. As therapy has evolved, so too have the treatment regimens employed by physicians in clinical practice; however, visual outcomes observed in the real world have typically not reflected those reported in clinical trials. Possible reasons for this include a lack of consensus on treatment regimens and a lack of clarity about what the aims of treatment should be...
May 19, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28527023/-high-resolution-manometry-of-pharyngeal-swallowing-dynamics
#10
REVIEW
M Jungheim, M Ptok
BACKGROUND: To transport a bolus from the mouth into the stomach, regular contraction of the pharyngeal muscles and a coordinated function of the upper esophageal sphincter (UES) are necessary. The muscle contraction generates intraluminal pressure, which pushes the bolus continuously forward. In contrast to imaging studies, manometric methods enable assessment of intraluminal pressure buildup and the function of the muscles involved. These methods were initially established for the esophagus and have been used increasingly in the pharynx for 7-8 years...
May 19, 2017: HNO
https://www.readbyqxmd.com/read/28526986/implementation-of-quality-by-design-for-formulation-of-rebamipide-gastro-retentive-tablet
#11
Jung-Myung Ha, Jeong-Woong Seo, Su-Hyeon Kim, Ju-Young Kim, Chun-Woong Park, Yun-Seok Rhee, Eun-Seok Park
The purpose of the present study was to develop a rebamipide (RBM) gastro-retentive (GR) tablet by implementing quality by design (QbD). RBM GR tablets were prepared using a sublimation method. Quality target product profile (QTPP) and critical quality attributes (CQAs) of the RBM GR tablets were defined according to the preliminary studies. Factors affecting the CQAs were prioritized using failure mode and effects analysis (FMEA). Design space and optimum formulation were established through a mixture design...
May 19, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28526893/do-we-need-3d-tube-current-modulation-information-for-accurate-organ-dosimetry-in-chest-ct-protocols-dose-comparisons
#12
Xochitl Lopez-Rendon, Guozhi Zhang, Walter Coudyzer, Wim Develter, Hilde Bosmans, Federica Zanca
OBJECTIVES: To compare the lung and breast dose associated with three chest protocols: standard, organ-based tube current modulation (OBTCM) and fast-speed scanning; and to estimate the error associated with organ dose when modelling the longitudinal (z-) TCM versus the 3D-TCM in Monte Carlo simulations (MC) for these three protocols. METHOD: Five adult and three paediatric cadavers with different BMI were scanned. The CTDIvol of the OBTCM and the fast-speed protocols were matched to the patient-specific CTDIvol of the standard protocol...
May 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28526865/realization-of-large-energy-proportion-in-the-central-lobe-by-coherent-beam-combination-based-on-conformal-projection-system
#13
Dong Zhi, Zhixin Zhang, Yanxing Ma, Xiaolin Wang, Zilun Chen, Wuming Wu, Pu Zhou, Lei Si
In this paper, we experimentally validate a tiled-aperture conformal projection system with the largest array filling factor and element beam truncation factor to the best of our knowledge. The conformal projection system, which is made up of a hexagonal adaptive fiber-optics collimator (AFOC) array with the proximate ideal intensity distributions, is fabricated and the performance of output beam is tested and evaluated properly and carefully. Both of the active phase-locking control and precise tip-tilt control are implemented successfully in the CBC of the hexagonal seven-beam-array...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526835/large-field-of-view-fast-and-low-dose-multimodal-phase-contrast%C3%A2-imaging-at-high-x-ray-energy
#14
Alberto Astolfo, Marco Endrizzi, Fabio A Vittoria, Paul C Diemoz, Benjamin Price, Ian Haig, Alessandro Olivo
X-ray phase contrast imaging (XPCI) is an innovative imaging technique which extends the contrast capabilities of 'conventional' absorption based x-ray systems. However, so far all XPCI implementations have suffered from one or more of the following limitations: low x-ray energies, small field of view (FOV) and long acquisition times. Those limitations relegated XPCI to a 'research-only' technique with an uncertain future in terms of large scale, high impact applications. We recently succeeded in designing, realizing and testing an XPCI system, which achieves significant steps toward simultaneously overcoming these limitations...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526799/acquired-resistance-to-macrolides-in-pseudomonas-aeruginosa-from-cystic-fibrosis-patients
#15
Muhammad-Hariri Mustafa, Shaunak Khandekar, Michael M Tunney, J Stuart Elborn, Barbara C Kahl, Olivier Denis, Patrick Plésiat, Hamidou Traore, Paul M Tulkens, Francis Vanderbist, Françoise Van Bambeke
Cystic fibrosis (CF) patients receive chronic treatment with macrolides for their antivirulence and anti-inflammatory properties. We, however, previously showed that Pseudomonas aeruginosa, considered as naturally resistant to macrolides, becomes susceptible when tested in a eukaryotic medium rather than a conventional broth.We therefore looked for specific macrolide resistance determinants in 333 CF isolates from four European CF centres in comparison with 48 isolates from patients suffering from hospital-acquired pneumonia (HAP)...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28526668/north-american-public-opinion-survey-on-the-acceptability-of-crowdsourcing-basic-life-support-for-out-of-hospital-cardiac-arrest-with-the-pulsepoint-mobile-phone-app
#16
Katie N Dainty, Haris Vaid, Steven C Brooks
BACKGROUND: The PulsePoint Respond app is a novel system that can be implemented in emergency dispatch centers to crowdsource basic life support (BLS) for patients with cardiac arrest and facilitate bystander cardiopulmonary resuscitation (CPR) and automated external defibrillator use while first responders are en route. OBJECTIVE: The aim of this study was to conduct a North American survey to evaluate the public perception of the above-mentioned strategy, including acceptability and willingness to respond to alerts...
May 17, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28526667/patient-centered-decision-support-formative-usability-evaluation-of-integrated-clinical-decision-support-with-a-patient-decision-aid-for-minor-head-injury-in-the-emergency-department
#17
Edward R Melnick, Erik P Hess, George Guo, Maggie Breslin, Kevin Lopez, Anthony J Pavlo, Fuad Abujarad, Seth M Powsner, Lori A Post
BACKGROUND: The Canadian Computed Tomography (CT) Head Rule, a clinical decision rule designed to safely reduce imaging in minor head injury, has been rigorously validated and implemented, and yet expected decreases in CT were unsuccessful. Recent work has identified empathic care as a key component in decreasing CT overuse. Health information technology can hinder the clinician-patient relationship. Patient-centered decision tools to support the clinician-patient relationship are needed to promote evidence-based decisions...
May 19, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28526666/a-smart-toy-to-enhance-the-decision-making-process-at-children-s-psychomotor-delay-screenings-a-pilot-study
#18
María Angeles Gutiérrez García, María Luisa Martín Ruiz, Diego Rivera, Laura Vadillo, Miguel Angel Valero Duboy
BACKGROUND: EDUCERE ("Ubiquitous Detection Ecosystem to Care and Early Stimulation for Children with Developmental Disorders") is an ecosystem for ubiquitous detection, care, and early stimulation of children with developmental disorders. The objectives of this Spanish government-funded research and development project are to investigate, develop, and evaluate innovative solutions to detect changes in psychomotor development through the natural interaction of children with toys and everyday objects, and perform stimulation and early attention activities in real environments such as home and school...
May 19, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28526661/the-parasol-protocol-an-implementation-science-study-of-hiv-continuum-of-care-interventions-for-gay-men-and-transgender-women-in-burma-myanmar
#19
Andrea L Wirtz, Soe Naing, Emily Clouse, Kaung Htet Thu, Sandra Hsu Hnin Mon, Zin Min Tun, Stefan Baral, Aung Zayar Paing, Chris Beyrer
BACKGROUND: Efforts to improve HIV diagnosis and antiretroviral therapy (ART) initiation among people living with HIV and reduce onward transmission of HIV rely on innovative interventions along multiple steps of the HIV care continuum. These innovative methods are particularly important for key populations, including men who have sex with men (MSM) and transgender women (TW). The HIV epidemic in Myanmar is concentrated among key populations, and national efforts now focus on reducing stigma and improving engagement of MSM and TW in HIV prevention and care...
May 17, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28526519/oxytocin-administration-during-spontaneous-labor-guidelines-for-clinical-practice-chapter-4-oxytocin-efficiency-according-to-implementation-in-insufficient-spontaneous-labor
#20
Bénédicte Coulm, Véronique Tessier
AIM: To describe the optimal procedures for administering oxytocin in cases of insufficient uterine contractility during spontaneous labor and the maternal and fetal monitoring to accompany it. METHODS: Systematic review of the literature by consultation of the Medline, Micromedex, and Cochrane databases, and international guidelines. RESULTS: Oxytocin must be administered only in hospital settings and monitored according to a written departmental protocol...
May 16, 2017: J Gynecol Obstet Hum Reprod
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