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https://www.readbyqxmd.com/read/28722538/dispersed-synthesis-of-uniform-fe3o4-magnetic-nanoparticles-via-in-situ-decomposition-of-iron-precursor-along-cotton-fiber-for-sudan-dyes-analysis-in-food-samples
#1
Yassine Bentahir, Said Elmarhoum, Rachid Salghi, Manuel Algarra, Angel Ríos, Mohammed Zougagh
Fe3O4 magnetic nanoparticles, with a negative charge surface, are known to have efficient adsorbent properties, but they tend to be agglomerated into larger aggregates or flocs, which can cause loss of specific area. The addition of cotton fiber, as a stabilizer in preparation of the Fe3O4 nanoparticles, is able to efficiently reduce particle aggregation, and thus, effective particle size, resulting in much greater specific surface area and adsorption sites. Fe3O4 nanoparticles synthesis was accomplished by in-situ high temperature decomposition of the precursor ferric ion in the presence of cotton fiber and ethylene glycol solvent...
July 19, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28721173/detecting-reporting-and-analysis-of-priority-diseases-for-routine-public-health-surveillance-in-liberia
#2
Joseph Asamoah Frimpong, Meeyoung Mattie Park, Maame Pokuah Amo-Addae, Peter Adebayo Adewuyi, Thomas Knue Nagbe
An essential component of a public health surveillance system is its ability to detect priority diseases which fall within the mandate of public health officials at all levels. Early detection, reporting and response to public health events help to reduce the burden of mortality and morbidity on communities. Analysis of reliable surveillance data provides relevant information which can enable implementation of timely and appropriate public health interventions. To ensure that a resilient system is in place, the World Health Organization (WHO) has provided guidelines for detection, reporting and response to public health events in the Integrated Disease Surveillance and Response (IDSR) strategy...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28721053/reduced-prefrontal-activation-during-verbal-fluency-task-in-chronic-insomnia-disorder-a-multichannel-near-infrared-spectroscopy-study
#3
Jing-Jing Sun, Xiao-Min Liu, Chen-Yu Shen, Xiao-Qian Zhang, Gao-Xiang Sun, Kun Feng, Bo Xu, Xia-Jin Ren, Xiang-Yun Ma, Po-Zi Liu
PURPOSE: Daytime complaints such as memory and attention deficits and failure to accomplish daily tasks are common in insomnia patients. However, objective psychological tests to detect cognitive impairment are equivocal. Neural function associated with cognitive performance may explain the discrepancy. The aim of this study was to investigate the hemodynamic response patterns of patients with chronic insomnia disorder (CID) using the noninvasive and low-cost functional neuroimaging technique of multichannel near-infrared spectroscopy (NIRS) in order to identify changes of neural function associated with cognitive performance...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28720202/a-novel-surgical-approach-to-mechanical-circulatory-support-in-univentricular-infants
#4
Avihu Z Gazit, Orlando Petrucci, Peter Manning, Mark Shepard, Sirine Baltagi, Kathleen Simpson, Chesney Castleberry, Charles Canter, Pirooz Eghtesady
BACKGROUND: Historically, the options for mechanical circulatory support in infants, particularly those with single-ventricle physiology, have been limited and outcomes have generally been poor. We report a new approach implemented for long-term support in a series of such patients. METHODS: This study is a single-center case series of 7 patients with single-ventricle physiology after stage 1 palliation supported with mechanical circulatory support using a novel technique, between May 2014 and September 2015...
July 15, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28719565/burnout-in-orthopaedic-surgeons-a-challenge-for-leaders-learners-and-colleagues-aoa-critical-issues
#5
S Elizabeth Ames, James B Cowan, Keith Kenter, Sanford Emery, David Halsey
Burnout, depression, suicidal ideation, and dissatisfaction with work-life balance have been reported in all medical specialties and at all stages of medical education and practice experience. Burnout consists of progressive emotional, attitudinal, and physical exhaustion. Physicians with burnout may treat patients as objects and feel emotionally depleted. Burnout is characterized by a loss of enthusiasm for work (emotional exhaustion), feelings of cynicism (depersonalization), and a low sense of personal accomplishment...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28718456/graphene-oxide-and-dna-aptamer-based-sub-nanomolar-potassium-detecting-optical-nanosensor
#6
Debopam Datta, Ketaki Sarkar, Souvik Mukherjee, Xenia Meshik, Michael A Stroscio, Mitra Dutta
Quantum-dot (QD) based nanosensors are frequently used by researchers to detect small molecules, ions and different biomolecules. In this article, we present a sensor complex/system comprised of deoxyribonucleic acid (DNA) aptamer, gold nanoparticle and semiconductor QD, attached to a graphene oxide (GO) flake for detection of potassium. As reported herein, it is demonstrated that QD-aptamer-quencher nanosensor functions even when tethered to GO, opening the way to future applications where sensing can be accomplished simultaneously with other previously demonstrated applications of GO such as serving as a nanocarrier for drug delivery...
August 11, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28718056/aeration-control-strategies-to-stimulate-simultaneous-nitrification-denitrification-via-nitrite-during-the-formation-of-aerobic-granular-sludge
#7
Thomas Dobbeleers, Jolien D'aes, Solange Miele, Michel Caluwé, Veerle Akkermans, Dominique Daens, Luc Geuens, Jan Dries
In this study, a sequencing batch reactor (SBR), treating synthetic wastewater (COD/N = 5), was operated in two stages. During stage I, an aeration control strategy based on oxygen uptake rate (OUR) was applied, to accomplish nitrogen removal via nitrite >80%. In stage II, the development of aerobic granular sludge (AGS) was examined while two aeration control strategies (OUR and pH slope) maintained the nitrite pathway and optimized the simultaneous nitrification-denitrification (SND) performance. Stimulation of slow-growing organisms, (denitrifying) polyphosphate-accumulating organisms (D)PAO and (denitrifying) glycogen-accumulating organisms (D)GAO leads to full granulation (at day 200, SVI10 = 47...
July 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28717975/development-of-a-novel-polymeric-nanocomposite-complex-for-drugs-with-low-bioavailability
#8
Mduduzi N Sithole, Yahya E Choonara, Lisa C du Toit, Pradeep Kumar, Thashree Marimuthu, Pierre P D Kondiah, Viness Pillay
Semi-synthetic biopolymer complex (SSBC) nanoparticles were investigated as a potential oral drug delivery system to enhance the bioavailability of a poorly water-soluble model drug acyclovir (ACV). The SSBCs were prepared from cross-linking of hydroxyl groups on hyaluronic acid (HA) with poly(acrylic acid) (PAA) resulting in ether linkages. Thereafter, conjugation of 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) onto HA-PAA was accomplished using a 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC)/N-hydroxysuccinimide (NHS)-promoted coupling reaction...
July 17, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28717000/empathy-burnout-and-antibiotic-prescribing-for-acute-respiratory-infections-a-cross-sectional-primary-care-study-in-the-us
#9
Bob Z Sun, Alexander Chaitoff, Bo Hu, Kathleen Neuendorf, Mahesh Manne, Michael B Rothberg
BACKGROUND: The impact of physician-patient relationship factors, such as physician empathy and burnout, on antibiotic prescribing has not been characterised. AIM: To assess associations between physician empathy and burnout and antibiotic prescribing for acute respiratory infections (ARIs) in primary care. DESIGN AND SETTING: Cross-sectional study of primary care practices in the Cleveland Clinic Health System in the US. METHOD: Patient and prescribing data were obtained from the medical record...
July 17, 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28716142/prevalence-of-and-factors-associated-with-burnout-among-health-care-professionals-in-arab-countries-a-systematic-review
#10
I Elbarazi, T Loney, S Yousef, A Elias
BACKGROUND: Burnout among healthcare professionals is one of the key challenges affecting health care practice and quality of care. This systematic review aims to (1) estimate the prevalence of burnout among health care professionals (HCP) in Arab countries; and (2) explore individual and work-related factors associated with burnout in this population. METHODS: Multiple electronic databases were searched for studies published in English or Arabic from January 1980 to November 2014 assessing burnout (using the Maslach Burnout Inventory; MBI) amongst health care professionals (HCP) in Arab countries...
July 17, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28715514/i-swot-as-instrument-to-individually-optimize-therapy-of%C3%A2-thoracoabdominal-aortic-aneurysms-effective-norm-compliant-and-meeting-the-needs
#11
A Sachweh, Y von Kodolitsch, T Kölbel, A Larena-Avellaneda, S Wipper, A M Bernhardt, E Girdauskas, C Detter, H Reichenspurner, C R Blankart, E S Debus
BACKGROUND: Guidelines summarize medical evidence, they identify the most efficient therapy under study conditions and recommend this therapy for use. The physician now has the challenge to translate a therapy that is efficient under laboratory conditions to a patient who is an individual person. To accomplish this task the physician has to make sure that (I) the ideal typical therapy is applicable and effective in this individual patient taking the special features into consideration, that (II) therapy is compliant with the norm including guidelines, laws and ethical requirements (conformity) and that (III) the therapy meets the patient's needs...
2017: Gefässchirurgie: Zeitschrift Für Vaskuläre und Endovaskuläre Chirurgie
https://www.readbyqxmd.com/read/28714923/heterologous-humoral-response-against-h5n1-h7n3-and-h9n2-avian-influenza-viruses-after-seasonal-vaccination-in-a-european-elderly-population
#12
Ivan Sanz, Silvia Rojo, Sonia Tamames, José María Eiros, Raúl Ortiz de Lejarazu
Avian influenza viruses are currently one of the main threats to human health in the world. Although there are some screening reports of antibodies against these viruses in humans from Western countries, most of these types of studies are conducted in poultry and market workers of Asian populations. The presence of antibodies against avian influenza viruses was evaluated in an elderly European population. An experimental study was conducted, including pre- and post-vaccine serum samples obtained from 174 elderly people vaccinated with seasonal influenza vaccines of 2006-2007, 2008-2009, 2009-2010, and 2010-2011 Northern Hemisphere vaccine campaigns...
July 17, 2017: Vaccines
https://www.readbyqxmd.com/read/28714731/falsifiability-is-not-optional
#13
Etienne P LeBel, Derek Berger, Lorne Campbell, Timothy J Loving
Finkel, Eastwick, and Reis (2016; FER2016) argued the post-2011 methodological reform movement has focused narrowly on replicability, neglecting other essential goals of research. We agree multiple scientific goals are essential, but argue, however, a more fine-grained language, conceptualization, and approach to replication is needed to accomplish these goals. Replication is the general empirical mechanism for testing and falsifying theory. Sufficiently methodologically similar replications, also known as direct replications, test the basic existence of phenomena and ensure cumulative progress is possible a priori...
August 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28714395/five-decades-of-cuprizone-an-updated-model-to-replicate-demyelinating-diseases
#14
Jose M Vega-Riquer, Gerardo Mendez-Victoriano, Raul A Morales-Luckie, Oscar Gonzalez-Perez
Multiple sclerosis, Guillain-Barré syndrome, peripheral nerve polyneuropathy and others comprise a group of demyelinating diseases characterized by progressive (and eventually irreversible) loss of oligodendrocytes and myelin sheaths in the white matter of the brain. To date, the etiology of these disorders is not well known and no effective treatments are currently available. Therefore, further research is needed to gain a better understand and treat these patients. To accomplish this goal, it is necessary to have appropriate animal models that closely resemble the pathophysiology of these diseases...
July 17, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28714240/tunable-snse2-wse2-heterostructure-tunneling-field-effect-transistor
#15
Xiao Yan, Chunsen Liu, Chao Li, Wenzhong Bao, Shijin Ding, David Wei Zhang, Peng Zhou
The burgeoning 2D semiconductors can maintain excellent device electrostatics with an ultranarrow channel length and can realize tunneling by electrostatic gating to avoid deprivation of band-edge sharpness resulting from chemical doping, which make them perfect candidates for tunneling field effect transistors. Here this study presents SnSe2 /WSe2 van der Waals heterostructures with SnSe2 as the p-layer and WSe2 as the n-layer. The energy band alignment changes from a staggered gap band offset (type-II) to a broken gap (type-III) when changing the negative back-gate voltage to positive, resulting in the device operating as a rectifier diode (rectification ratio ~10(4) ) or an n-type tunneling field effect transistor, respectively...
July 17, 2017: Small
https://www.readbyqxmd.com/read/28714108/assessing-the-spatial-distribution-of-tuta-absoluta-lepidoptera-gelechiidae-eggs-in-open-field-tomato-cultivation-through-geostatistical-analysis
#16
Júlio C Martins, Marcelo C Picanço, Ricardo S Silva, Alfredo H R Gonring, Tarcísio V S Galdino, Raul N C Guedes
BACKGROUND: The spatial distribution of insects is due to the interaction between individuals and the environment. Knowledge about the within-field pattern of spatial distribution of a pest is critical to planning control tactics, developing efficient sampling plans, and predicting the pests' damages. The leaf miner Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is the main pest in tomato crops in several regions of the world. Despite the importance of this pest, the pattern of spatial distribution of T...
July 17, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28713422/computational-analysis-of-lifespan-experiment-reproducibility
#17
Michael Petrascheck, Dana L Miller
Independent reproducibility is essential to the generation of scientific knowledge. Optimizing experimental protocols to ensure reproducibility is an important aspect of scientific work. Genetic or pharmacological lifespan extensions are generally small compared to the inherent variability in mean lifespan even in isogenic populations housed under identical conditions. This variability makes reproducible detection of small but real effects experimentally challenging. In this study, we aimed to determine the reproducibility of C...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28713118/preserving-the-bone-profile-in-anterior-maxilla-using-an-equine-cortical-bone-membrane-and-an-equine-enzyme-treated-bone-graft-a-case-report-with-5-year-follow-up
#18
Danilo A Di Stefano, Umberto Garagiola, Mirko A Bassi
AIM: This study aimed to report a well-succeeded use of equine enzyme-deantigenic cortical membrane and bone granules for guided bone regeneration (GBR) in the esthetic zone concomitant with implant placement. BACKGROUND: In the anterior maxilla, where patients typically have the highest expectations for implant-supported restorations, bone resorption in the wake of tooth loss often leads to a lack of soft tissue support and ultimately to unsatisfactory esthetic results...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28713077/-burnout-syndrome-among-physiotherapists
#19
Krzysztof Owczarek, Stanisław Wojtowicz, Witold Pawłowski, Dariusz Białoszewski
BACKGROUND: Burnout is a syndrome of emotional exhaustion, depersonalization, and a reduced sense of personal accomplishment. Symptoms of burnout include mental and physical exhaustion, accompanied by psychosomatic disorders and emotional problems. Burnout occurs most often in people employed in occupations requiring working with people (human services) as a result of coping with stress and experience numerous failures at work. The aim of the research is the analysis of burnout among physiotherapists and demographic factors and conditions that may contribute to the burnout...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28712917/amphotericin-b-releasing-topical-nanoemulsion-for-the-treatment-of-candidiasis-and-aspergillosis
#20
Lilian Sosa, Beatriz Clares, Helen L Alvarado, Nuria Bozal, Oscar Domenech, Ana C Calpena
The present study was designed to develop a nanoemulsion formulation of Amphotericin B (AmB) for the treatment of skin candidiasis and aspergillosis. Several ingredients were selected on the basis of AmB solubility and compatibility with skin. The formulation that exhibited the best properties was selected from the pseudo-ternary phase diagram. After physicochemical characterization its stability was assessed. Drug release and skin permeation studies were also accomplished. The antifungal efficacy and skin tolerability of developed AmB nanoemulsion was demonstrated...
July 13, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
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