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https://www.readbyqxmd.com/read/28651057/how-to-identify-plasmons-from-the-optical-response-of-nanostructures
#1
Runmin Zhang, Luca Bursi, Joel D Cox, Yao Cui, Caroline M Krauter, Alessandro Alabastri, Alejandro Manjavacas, Arrigo Calzolari, Stefano Corni, Elisa Molinari, Emily A Carter, F Javier Garcia de Abajo, Hui Zhang, Peter Nordlander
A promising trend in plasmonics involves shrinking the size of plasmon-supporting structures down to a few nanometers, thus enabling control over light-matter interaction at extreme-subwavelength scales. In this limit, quantum-mechanical effects, such as nonlocal screening and size quantization, strongly affect the plasmonic response, rendering it substantially different from classical predictions. For very small clusters and molecules, collective plasmonic modes are hard to distinguish from other excitations such as single-electron transitions...
June 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28651016/enhanced-light-microscopy-visualization-of-virus-particles-from-zika-virus-to-filamentous-ebolaviruses
#2
George G Daaboul, David S Freedman, Steven M Scherr, Erik Carter, Alexandru Rosca, David Bernstein, Chad E Mire, Krystle N Agans, Thomas Hoenen, Thomas W Geisbert, M Selim Ünlü, John H Connor
Light microscopy is a powerful tool in the detection and analysis of parasites, fungi, and prokaryotes, but has been challenging to use for the detection of individual virus particles. Unlabeled virus particles are too small to be visualized using standard visible light microscopy. Characterization of virus particles is typically performed using higher resolution approaches such as electron microscopy or atomic force microscopy. These approaches require purification of virions away from their normal millieu, requiring significant levels of expertise, and can only enumerate small numbers of particles per field of view...
2017: PloS One
https://www.readbyqxmd.com/read/28649409/bacillus-subtilis-utilizes-the-dna-damage-response-to-manage-multicellular-development
#3
Kevin Gozzi, Carly Ching, Srinand Paruthiyil, Yinjuan Zhao, Veronica Godoy-Carter, Yunrong Chai
Bacteria switch between free-living and a multicellular state, known as biofilms, in response to cellular and environmental cues. It is important to understand how these cues influence biofilm development as biofilms are not only ubiquitous in nature but are also causative agents of infectious diseases. It is often believed that any stress triggers biofilm formation as a means of bacterial protection. In this study, we propose a new mechanism for how cellular and environmental DNA damage may influence biofilm formation...
2017: NPJ Biofilms and Microbiomes
https://www.readbyqxmd.com/read/28649302/differential-predictors-of-dsm-5-ptsd-and-icd-11-complex-ptsd-among-african-american-women
#4
Abigail Powers, Negar Fani, Sierra Carter, Dorthie Cross, Marylene Cloitre, Bekh Bradley
Background: Complex posttraumatic stress disorder (CPTSD) is proposed for inclusion in the ICD-11 as a diagnosis distinct from posttraumatic stress disorder (PTSD), reflecting deficits in affective, self-concept, and relational domains. There remains significant controversy over whether CPTSD provides useful diagnostic information beyond PTSD and other comorbid conditions, such as depression or substance use disorders. Objective: The present study examined differences in psychiatric presentation for three groups: traumatized controls, DSM-5 PTSD subjects, and ICD-11 CPTSD subjects...
2017: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/28648682/a-qualitative-investigation-of-exercise-perceptions-and-experiences-in-people-with-multiple-sclerosis-before-during-and-after-participation-in-a-personally-tailored-exercise-program
#5
Helen Crank, Anouska Carter, Liam Humphreys, Nicky Snowdon, Amanda Daley, Nicola Woodroofe, Basil Sharrack, Jane Petty, John M Saxton
OBJECTIVE: To undertake a qualitative investigation of exercise perceptions and experiences in people with MS (PwMS) before, during and after participation in a personally-tailored program designed to promote long-term maintenance of self-directed exercise. DESIGN: Focus groups and semi-structured telephone interviews. SETTING: University Exercise Science Department close to the recruiting hospital. PARTICIPANTS: PwMS (N=33; aged 47...
June 22, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28648661/de-novo-epigenetic-programs-inhibit-pd-1-blockade-mediated-t-cell-rejuvenation
#6
Hazem E Ghoneim, Yiping Fan, Ardiana Moustaki, Hossam A Abdelsamed, Pradyot Dash, Pranay Dogra, Robert Carter, Walid Awad, Geoff Neale, Paul G Thomas, Ben Youngblood
Immune-checkpoint-blockade (ICB)-mediated rejuvenation of exhausted T cells has emerged as a promising approach for treating various cancers and chronic infections. However, T cells that become fully exhausted during prolonged antigen exposure remain refractory to ICB-mediated rejuvenation. We report that blocking de novo DNA methylation in activated CD8 T cells allows them to retain their effector functions despite chronic stimulation during a persistent viral infection. Whole-genome bisulfite sequencing of antigen-specific murine CD8 T cells at the effector and exhaustion stages of an immune response identified progressively acquired heritable de novo methylation programs that restrict T cell expansion and clonal diversity during PD-1 blockade treatment...
June 21, 2017: Cell
https://www.readbyqxmd.com/read/28648551/science-politics-and-communication-the-case-of-community-water-fluoridation-in-the-us
#7
Myron Allukian, Olivia D Carter-Pokras, Barbara F Gooch, Alice M Horowitz, Hiroko Iida, Matt Jacob, Dushanka V Kleinman, Jayanth Kumar, William R Maas, Howard Pollick, R Gary Rozier
Community water fluoridation (CWF) and its effect in reducing the burden of dental caries (tooth decay) is considered one of the 10 public health achievements in the 20th century. In the U.S., three-quarters (74.4%) of people on community water supplies have optimally fluoridated water, and each year approximately 90 communities actively consider starting or discontinuing CWF. CWF exists within the policy environment and includes actions taken by local community councils, health and water boards, and groups; state legislatures and health departments; national regulatory and science agencies; independent science entities; and professional and nonprofit organizations...
May 29, 2017: Annals of Epidemiology
https://www.readbyqxmd.com/read/28648148/debt-counselling-for-depression-in-primary-care-an-adaptive-randomised-controlled-pilot-trial-decoder-study
#8
Mark B Gabbay, Adele Ring, Richard Byng, Pippa Anderson, Rod S Taylor, Caryn Matthews, Tirril Harris, Vashti Berry, Paula Byrne, Elliot Carter, Pam Clarke, Laura Cocking, Suzanne Edwards, Richard Emsley, Mauro Fornasiero, Lucy Frith, Shaun Harris, Peter Huxley, Siw Jones, Peter Kinderman, Michael King, Liv Kosnes, Daniel Marshall, Dave Mercer, Carl May, Debbie Nolan, Ceri Phillips, Tim Rawcliffe, Alexandra V Sardani, Elizabeth Shaw, Sam Thompson, Jane Vickery, Brian Wainman, Mark Warner
BACKGROUND: Depression and debt are common in the UK. Debt Counselling for Depression in Primary Care: an adaptive randomised controlled pilot trial (DeCoDer) aimed to assess the clinical effectiveness and cost-effectiveness of the addition of a primary care debt counselling advice service to usual care for patients with depression and debt. However, the study was terminated early during the internal pilot trial phase because of recruitment delays. This report describes the rationale, methods and findings of the pilot study, and implications for future research...
June 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28647585/distribution-of-peanut-protein-in-school-and-home-environments-of-inner-city-children
#9
William J Sheehan, Helen A Brough, Kerry Makinson, Carter R Petty, Gideon Lack, Wanda Phipatanakul
Peanut protein was widely detectable in dust samples from school classrooms and cafeterias, with school levels higher than home levels, suggesting that schools may be an important place of exposure to food allergens in the environment.
June 21, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28646373/ethical-challenges-unique-to-the-primary-care-behavioral-health-pcbh-model
#10
Christine N Runyan, Stephanie Carter-Henry, Stacy Ogbeide
The interprofessional nature of the Primary Care Behavioral Health (PCBH) model invites potential conflicts between different ethical guidelines and principles developed by separate professional disciplines. When the foundational model of care and training on which ethical principles were developed shifts, the assumptions underlying the guidance also shifts, revealing gaps and mismatches. This article reviews the extant literature in this realm, and proposes a more unifying set of ethical guidance for interprofessional, integrated primary care practice...
June 23, 2017: Journal of Clinical Psychology in Medical Settings
https://www.readbyqxmd.com/read/28645270/qualitative-modification-and-development-of-patient-and-caregiver-reported-outcome-measures-for-iron-chelation-therapy
#11
Erica G Horodniceanu, Vasudha Bal, Harman Dhatt, John A Carter, Vicky Huang, Kathryn Lasch
BACKGROUND: Compliance, palatability, gastrointestinal (GI) symptom, and treatment satisfaction patient- and observer-reported outcome (PRO, ObsRO) measures were developed/modified for patients with transfusion-dependent anemias or myelodysplastic syndrome (MDS) requiring iron chelation therapy (ICT). METHODS: This qualitative cross-sectional observational study used grounded theory data collection and analysis methods and followed PRO/ObsRO development industry guidance...
June 23, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/28645199/do-neurobiological-understandings-of-smoking-influence-quitting-self-efficacy-or-treatment-intentions
#12
Kylie Morphett, Adrian Carter, Wayne Hall, Jayne Lucke, Brad Partridge, Coral Gartner
Introduction: Addiction is increasingly defined as a "brain disease" caused by changes to neurochemistry. While nicotine addiction has historically been excluded in the brain disease model of addiction (BDMA), it is beginning to be labelled a chronic brain disease. We investigated whether Australian smokers endorse brain-based explanations of smoking, and whether these beliefs are associated with quitting self-efficacy or treatment intentions. Method: Cross-sectional study of Australian smokers (N=1,538) who completed a survey measuring their agreement with statements on the brain's role in smoking...
June 22, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28644408/isolation-and-selection-of-microalgal-strains-from-natural-water-sources-in-viet-nam-with-potential-for-edible-oil-production
#13
Tran Yen Thao, Dinh Thi Nhat Linh, Vo Chi Si, Taylor W Carter, Russell T Hill
Industrial vegetable oil production in Viet Nam depends on oil seeds and crude plant oils that are currently more than 90% imported. As the first step in investigating the feasibility of using microalgae to provide Viet Nam with a domestic source of oil for food and edible oil industries, fifty lipid-producing microalgae were isolated and characterized. The microalgae were isolated from water sources ranging from freshwater to brackish and marine waters from a wide geographic distribution in Viet Nam. Initial analyses showed that 20 of the 50 strains had good growth rates, produced high biomass and had high lipid content, ranging up to 50% of dry weight biomass...
June 23, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28644222/pas-public-awareness-and-the-popular-media
#14
Reginald D Carter, Ruth Ballweg
From the very beginning, popular media has played an essential role in driving public awareness and recognition of physician assistants (PAs) as major contributors to healthcare. But for PAs, popular media can be a double-edged sword. Over time, the roles of PAs have evolved from bit players to leading characters on television medical dramas. Even so, on some occasions, the roles of PAs have been marginalized and misrepresented. In the future, the PA profession will need to remain vigilant about how PAs are portrayed in the popular media and must learn how to use the full benefit of the media to promote the profession's diversity, flexibility, collegiality, and civic-mindedness...
July 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28642998/plastic-bronchitis-a-rare-complication-of-long-term-haemodialysis-catheter-placement-in-a-child
#15
Simon Carter, Dayna van de Hoef, Michael Temple, Elizabeth Harvey, Suhail Al-Saleh, Christoph Licht, Damien Noone
BACKGROUND: Despite peritoneal dialysis being the preferred mode of renal replacement therapy in neonates and infants, long-term haemodialysis may be necessary in a minority of patients with its attendant risks. CASE DIAGNOSIS/TREATMENT: This case identifies plastic bronchitis as a rare yet serious complication of long-term large bore vascular access when a vessel-sparing approach is not possible. CONCLUSIONS: An appropriately sized catheter should be used for the dialytic therapy required and to optimize access survival...
June 22, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28642957/superacid-promoted-synthesis-of-highly-porous-hypercrosslinked-polycarbazoles-for-efficient-co2-capture
#16
Xiang Zhu, Shunmin Ding, Carter W Abney, Katie L Browning, Robert L Sacci, Gabriel M Veith, Chengcheng Tian, Sheng Dai
A superacid-promoted "knitting" strategy has been developed for the generation of a novel family of hypercrosslinked nanoporous polycarbazoles for efficient CO2 capture. Using trifluoromethanesulfonic acid, a Brønsted superacid, we demonstrate the facile and rapid synthesis of highly porous polycarbazoles with BET surface areas as high as 1688 m(2) g(-1), and capable of adsorbing 3.5 mmol g(-1) of CO2 at 298 K and 1 bar. This impressive result bestows the material with the highest CO2 uptake capacity for all nanoporous carbazolic polymers and ranks among the best by known porous organic polymers under this condition...
June 23, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28642342/survival-of-contagious-ovine-digital-dermatitis-codd-associated-treponemes-on-disposable-gloves-after-handling-codd-affected-feet
#17
J W Angell, S R Clegg, D H Grove-White, R W Blowey, S D Carter, J S Duncan, N J Evans
Both contagious ovine digital dermatitis (CODD) and bovine digital dermatitis (BDD) are causes of infectious lameness in sheep and cattle, respectively, and are strongly associated with the presence of specific treponemes, with three different cultivable phylogroups commonly isolated: Treponema medium, Treponema phagedenis and Treponema pedis The aim of this study was to investigate the potential to transmit CODD-associated Treponema species via gloves used when handling visibly clinically affected animals...
June 22, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28640898/competition-between-influenza-a-virus-subtypes-through-heterosubtypic-immunity-modulates-re-infection-and-antibody-dynamics-in-the-mallard-duck
#18
Neus Latorre-Margalef, Justin D Brown, Alinde Fojtik, Rebecca L Poulson, Deborah Carter, Monique Franca, David E Stallknecht
Our overall hypothesis is that host population immunity directed at multiple antigens will influence the prevalence, diversity and evolution of influenza A virus (IAV) in avian populations where the vast subtype diversity is maintained. To investigate how initial infection influences the outcome of later infections with homologous or heterologous IAV subtypes and how viruses interact through host immune responses, we carried out experimental infections in mallard ducks (Anas platyrhynchos). Mallards were pre-challenged with an H3N8 low-pathogenic IAV and were divided into six groups...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28637650/achalasia-leading-to-diagnosis-of-adenocarcinoma-of-the-oesophagus
#19
Jonathan Segal, Ayodele Lagundoye, Martyn Carter
A 50-year-old male with a 7 month history of progressive dysphagia to solids then subsequently to liquids. He underwent a diagnostic gastroscopy which was normal. A further barium swallow suggested achalasia. He was referred to a tertiary centre, where he underwent pH and manometry studies which confirmed a diagnosis of achalasia. He was referred for a laparoscopic cardiomyotomy, and at surgery there was a suspected tumour at the gastro-oesophageal junction. A follow-up endoscopy with biopsies was normal...
June 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28637289/the-importance-of-knowing-when-you-don-t-remember-neural-signaling-of-retrieval-failure-predicts-memory-improvement-over-time
#20
Yana Fandakova, Silvia A Bunge, Carter Wendelken, Peter Desautels, Lauren Hunter, Joshua K Lee, Simona Ghetti
Just as the ability to remember prior events is critical for guiding our decision-making, so too is the ability to recognize the limitations of our memory. Indeed, we hypothesize that neural signaling of retrieval failure promotes more accurate memory judgments over time. To test this hypothesis, we collected longitudinal functional magnetic resonance imaging data from 8 to 9 years olds, 10 to 12 years olds, and adults, with two time points spaced approximately 1.4 years apart (198 scan sessions in total)...
November 23, 2016: Cerebral Cortex
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