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https://www.readbyqxmd.com/read/29667831/a-rigorous-method-of-calculating-exfoliation-energies-from-first-principles
#1
Jong Hyun Jung, Cheol-Hwan Park, Jisoon Ihm
The exfoliation energy, the energy required to peel off an atomic layer from the surface of a bulk material, is of fundamental importance in the science and engineering of two-dimensional materials. Traditionally, the exfoliation energy of a material has been obtained from first-principles by calculating the difference in the ground-state energy between (i) a slab of N atomic layers ( N ≫ 1) and (ii) a slab of N - 1 atomic layers plus an atomic layer separated from the slab. In this paper, we prove that the exfoliation energy can be obtained exactly as the difference in the ground-state energy between a bulk material (per atomic layer) and a single isolated layer...
April 18, 2018: Nano Letters
https://www.readbyqxmd.com/read/29667719/occupational-health-hazards-in-the-interventional-laboratory-time-for-a-safer-environment
#2
Lloyd W Klein, Donald L Miller, Stephen Balter, Warren Laskey, Neil Naito, David Haines, Allan Ross, Matthew A Mauro, James A Goldstein
Over the past 30 years, the advent of fluoroscopically guided interventional procedures has resulted in dramatic increments in both X-ray exposure and physical demands that predispose interventionists to distinct occupational health hazards. The hazards of accumulated radiation exposure have been known for years, but until recently the other potential risks have been ill-defined and under-appreciated. The physical stresses inherent in this career choice appear to be associated with a predilection to orthopedic injuries, attributable in great part to the cumulative adverse effects of bearing the weight and design of personal protective apparel worn to reduce radiation risk and to the poor ergonomic design of interventional suites...
January 4, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29667546/seminal-supar-levels-as-marker-of-abacterial-male-accessory-gland-inflammation-in-hypogonadism
#3
Domenico Milardi, Giuseppe Grande, Chiara Autilio, Francesca Mancini, Laura De Marinis, Riccardo Marana, Cecilia Zuppi, Andrea Urbani, Alfredo Pontecorvi, Silvia Baroni
Recent evidences suggest that hypogonadism is an important risk factor for lower urinary tract symptoms and benign prostatic hyperplasia. Several papers have discussed the role of chronic inflammation in the development of BPH, which may be modulated by the hypogonadal state. Soluble urokinase-type plasminogen activator receptor (suPAR), known protein marker of systemic inflammation, can be assayed in the seminal plasma and represents a reliable and sensitive marker of inflammation for the male accessory gland inflammation (MAGI)...
April 18, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29667464/end-user-evaluation-of-a-kneeling-wheelchair-with-on-the-fly-adjustable-seating-functions
#4
Johanne Mattie, Angie Wong, Danny Leland, Jaimie Borisoff
A "kneeling" ultralight wheelchair prototype has been developed that allows users to adjust seat position "on the fly" for different activities throughout the day. The wheelchair includes independent adjustment functions for rear seat height, front seat height ("kneeling") and backrest angle.  Aim: This work aimed to gather feedback about the wheelchair's functionality and performance through end user evaluation trials.  Methods: Eight manual wheelchair users evaluated the prototype Kneeling Wheelchair for a range of activities...
April 18, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29666997/forensic-answers-to-the-14th-of-july-2016-terrorist-attack-in-nice
#5
Gérald Quatrehomme, Steve Toupenay, Tania Delabarde, Bernard Padovani, Véronique Alunni
The terrorist attack of July 14, 2016 in Nice (France) was a devastating event. A man voluntarily drove a truck into a crowd gathered for the fireworks display on the seaside "Promenade des Anglais," plowing pedestrians down over more than 2 km before being shot dead. At the time of this report, a total of 86 casualties and more than 1200 formal complaints for physical and psychological injuries have been recorded. The aim of this work is to describe the forensic management of this event and its immediate aftermath...
April 17, 2018: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29666868/in-vitro-antibacterial-activity-of-oxide-and-non-oxide-bioceramics-for-arthroplastic-devices-ii-fourier-transform-infrared-spectroscopy
#6
Francesco Boschetto, Nami Toyama, Satoshi Horiguchi, Ryan M Bock, Bryan J McEntire, Tetsuya Adachi, Elia Marin, Wenliang Zhu, Osam Mazda, B Sonny Bal, Giuseppe Pezzotti
The metabolic response of Gram-positive Staphylococcus epidermidis (S. epidermidis) bacteria to bioceramic substrates was probed by means of Fourier transform infrared spectroscopy (FTIR). Oxide zirconia-toughened alumina (ZTA) and non-oxide silicon nitride (Si3N4) substrates were tested. Bacteria exposed to silica glass substrates were used as a control. S. epidermidis, a major cause of periprosthetic infections, was screened to obtain a precise time-lapse knowledge of its molecular composition and to mechanistically understand its interaction with different substrates...
April 18, 2018: Analyst
https://www.readbyqxmd.com/read/29666377/potential-reporting-bias-in-neuroimaging-studies-of-sex-differences
#7
Sean P David, Florian Naudet, Jennifer Laude, Joaquim Radua, Paolo Fusar-Poli, Isabella Chu, Marcia L Stefanick, John P A Ioannidis
Numerous functional magnetic resonance imaging (fMRI) studies have reported sex differences. To empirically evaluate for evidence of excessive significance bias in this literature, we searched for published fMRI studies of human brain to evaluate sex differences, regardless of the topic investigated, in Medline and Scopus over 10 years. We analyzed the prevalence of conclusions in favor of sex differences and the correlation between study sample sizes and number of significant foci identified. In the absence of bias, larger studies (better powered) should identify a larger number of significant foci...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29666345/simultaneous-estimation-of-qtl-parameters-for-mapping-multiple-traits
#8
Liang Tong, Xiaoxia Sun, Ying Zhou
The analysis of quantitative trait loci (QTLs) aims at mapping and estimating the positions and effects of the genes that may affect the quantitative trait, and evaluating the relationship between the gene variation and the phenotype. In existing studies, most methods mainly focus on the association/linkage between multiple gene loci and one trait, in which some useful joint information of multiple traits may be ignored. In this paper, we proposed a method of simultaneously estimating all QTL parameters in the framework of multiple-trait multiple-interval mapping...
March 2018: Journal of Genetics
https://www.readbyqxmd.com/read/29665883/plasmid-mediated-colistin-resistance-in-animals-current-status-and-future-directions
#9
Jian Sun, Ximin Zeng, Xing-Ping Li, Xiao-Ping Liao, Ya-Hong Liu, Jun Lin
Colistin, a peptide antibiotic belonging to the polymyxin family, is one of the last effective drugs for the treatment of multidrug resistant Gram-negative infections. Recent discovery of a novel mobile colistin resistance gene, mcr-1, from people and food animals has caused a significant public health concern and drawn worldwide attention. Extensive usage of colistin in food animals has been proposed as a major driving force for the emergence and transmission of mcr-1; thus, there is a worldwide trend to limit colistin usage in animal production...
December 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29665809/generating-evidence-for-health-policy-in-challenging-settings-lessons-learned-from-four-prevention-of-mother-to-child-transmission-of-hiv-implementation-research-studies-in-nigeria
#10
Nadia A Sam-Agudu, Muktar H Aliyu, Olusegun A Adeyemi, Frank Oronsaye, Bolanle Oyeledun, Amaka G Ogidi, Echezona E Ezeanolue
BACKGROUND: Implementation research (IR) facilitates health systems strengthening and optimal patient outcomes by generating evidence for scale-up of efficacious strategies in context. Thus, difficulties in generating IR evidence, particularly in limited-resource settings with wide disease prevention and treatment gaps, need to be anticipated and addressed. Nigeria is a priority country for the prevention of mother-to-child transmission of HIV (PMTCT). This paper analyses the experiences of four PMTCT IR studies in Nigeria, and proffers solutions to major challenges encountered during implementation...
April 17, 2018: Health Research Policy and Systems
https://www.readbyqxmd.com/read/29665247/how-do-we-know-if-a-clinical-practice-guideline-is-good-a-response-to-djulbegovic-and-colleagues-use-of-fast-and-frugal-decision-trees-to-improve-clinical-care-strategies
#11
Mathew Mercuri
Clinical practice guidelines (CPGs) and clinical pathways have become important tools for improving the uptake of evidence-based care. Where CPGs are good, adherence to the recommendations within is thought to result in improved patient outcomes. However, the usefulness of such tools for improving patient important outcomes depends both on adherence to the guideline and whether or not the CPG in question is good. This begs the question of what it is that makes a CPG good? In this issue of the Journal, Djulbegovic and colleagues offer a theory to help guide the development of CPGs...
April 17, 2018: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/29664969/putting-a-premium-on-altruism-a-social-discounting-experiment-with-south-african-university-students
#12
Frederik Booysen, Sevias Guvuriro, Alistair Munro, Tshepo Moloi, Celeste Campher
This paper reports on a social discounting experiment conducted with university students in South Africa. In line with other social discounting task experiments, participants identify target individuals at different degrees of intimacy in their social network and then make 10 choices involving sums of money for themselves or their targets. For an altruism premium to exist, senders' donations to recipients should be positive, statistically and economically significant, and independent of relationship closeness...
2018: PloS One
https://www.readbyqxmd.com/read/29664913/cost-benefit-analysis-of-introducing-next-generation-sequencing-metagenomic-pathogen-testing-in-the-setting-of-pyrexia-of-unknown-origin
#13
Jia Hui Chai, Chun Kiat Lee, Hong Kai Lee, Nicholas Wong, Kahwee Teo, Chuen Seng Tan, Praveen Thokala, Julian Wei-Tze Tang, Paul Anantharajah Tambyah, Vernon Min Sen Oh, Tze Ping Loh, Joanne Yoong
Pyrexia of unknown origin (PUO) is defined as a temperature of >38.3°C that lasts for >3 weeks, where no cause can be found despite appropriate investigation. Existing protocols for the work-up of PUO can be extensive and costly, motivating the application of recent advances in molecular diagnostics to pathogen testing. There have been many reports describing various analytical methods and performance of metagenomic pathogen testing in clinical samples but the economics of it has been less well studied...
2018: PloS One
https://www.readbyqxmd.com/read/29664119/e-cigarettes-vaping-and-performativity-in-the-context-of-tobacco-denormalisation
#14
Mark Lucherini, Catriona Rooke, Amanda Amos
E-cigarettes are devices through which a nicotine solution is 'vapourised' and inhaled by the user. Unlike cigarettes, the process involves no tobacco combustion. However, the inhalation and exhalation of vapour is reminiscent of smoking and there is debate about the possible harms and benefits of e-cigarette use, including the 'renormalisation' of smoking. Despite these debates, there has been little exploration into the embodied and semiotic similarities between smoking and vaping. This paper views the practices of vaping and smoking through the lens of performativity that is, the accumulation of meaning associated with the habits over time and space...
April 17, 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29663906/an-algorithm-based-approach-for-behavior-and-disease-management-in-children
#15
Beau D Meyer, Jessica Y Lee, S Thikkurissy, Paul S Casamassimo, William F Vann
Pharmacologic behavior management for dental treatment is an approach to provide invasive yet compassionate care for young children; it can facilitate the treatment of children who otherwise may not cooperate for traditional in-office care. Some recent highly publicized procedural sedation-related tragedies have drawn attention to risks associated with pharmacologic management. However, it remains widely accepted that, by adhering to proper guidelines, procedural sedation can assist in the provision of high-quality dental care while minimizing morbidity and mortality from the procedure...
March 15, 2018: Pediatric Dentistry
https://www.readbyqxmd.com/read/29663871/design-of-a-randomized-controlled-trial-of-zinc-supplementation-to-improve-markers-of-mortality-and-hiv-disease-progression-in-hiv-positive-drinkers-in-st-petersburg-russia
#16
Natalia Gnatienko, Matthew S Freiberg, Elena Blokhina, Tatiana Yaroslavtseva, Carly Bridden, Debbie M Cheng, Christine E Chaisson, Dmitry Lioznov, Sally Bendiks, Glory Koerbel, Sharon M Coleman, Evgeny Krupitsky, Jeffrey H Samet
Background Russia continues to have an uncontrolled HIV epidemic and its per capita alcohol consumption is among the highest in the world. Alcohol use among HIV-positive individuals is common and is associated with worse clinical outcomes. Alcohol use and HIV each lead to microbial translocation, which in turn results in inflammation. Zinc supplementation holds potential for lowering levels of biomarkers of inflammation, possibly as a consequence of its impact on intestinal permeability. This paper describes the protocol of a double-blinded randomized placebo-controlled trial of zinc supplementation in St...
April 17, 2018: HIV Clinical Trials
https://www.readbyqxmd.com/read/29662692/strengthening-health-district-management-competencies-in-ghana-tanzania-and-uganda-lessons-from-using-action-research-to-improve-health-workforce-performance
#17
Tim Martineau, Joanna Raven, Moses Aikins, Alvaro Alonso-Garbayo, Sebastian Baine, Reinhard Huss, Stephen Maluka, Kaspar Wyss
Background: To achieve Universal Health Coverage (UHC), more health workers are needed; also critical is supporting optimal performance of existing staff. Integrated human resource management (HRM) strategies, complemented by other health systems strategies, are needed to improve health workforce performance, which is possible at district level in decentralised contexts. To strengthen the capacity of district management teams to develop and implement workplans containing integrated strategies for workforce performance improvement, we introduced an action-research-based management strengthening intervention (MSI)...
2018: BMJ Global Health
https://www.readbyqxmd.com/read/29661749/a-website-supporting-sensitive-religious-and-cultural-advance-care-planning-acptalk-formative-and-summative-evaluation
#18
Amanda Pereira-Salgado, Patrick Mader, Clare O'Callaghan, Leanne Boyd
BACKGROUND: Advance care planning (ACP) promotes conversations about future health care needs, enacted if a person is incapable of making decisions at end-of-life that may be communicated through written documentation such as advance care directives. To meet the needs of multicultural and multifaith populations in Australia, an advance care planning website, ACPTalk, was funded to support health professionals in conducting conversations within diverse religious and cultural populations...
April 16, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29661704/becoming-an-ecoach-training-therapists-in-online-cognitive-behavioral-therapy-for-chronic-pain
#19
Jessy A Terpstra, Rosalie van der Vaart, Saskia Spillekom-van Koulil, Arno van Dam, Judith G M Rosmalen, Hans Knoop, Henriët van Middendorp, Andrea W M Evers
OBJECTIVE: Online cognitive-behavioral therapy (iCBT) is effective in supporting patients' self-management. Since iCBT differs from face-to-face CBT on several levels, proper training of therapists is essential. This paper describes the development and evaluation of a therapist training based on theoretical domains that are known to influence implementation behavior, for an iCBT for chronic pain. METHODS: The training consists of 1.5 days and covers the implementation domains "knowledge", "skills", "motivation", and "organization", by focusing on the therapy's rationale, iCBT skills, and implementation strategies...
April 7, 2018: Patient Education and Counseling
https://www.readbyqxmd.com/read/29661612/hearing-self-motion-perception-mobility-and-aging
#20
REVIEW
Jennifer Campos, Robert Ramkhalawansingh, M Kathleen Pichora-Fuller
Hearing helps us know where we are relative to important events and objects in our environment and it allows us to track our changing position dynamically over space and time. Auditory cues are used in combination with other sensory inputs (visual, vestibular, proprioceptive) to help us perceive our own movements through space, known as self-motion perception. Whether we are maintaining standing balance, walking, or driving, audition can provide unique and important information to help optimize self-motion perception, and consequently to support safe mobility...
March 31, 2018: Hearing Research
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