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https://www.readbyqxmd.com/read/28917808/single-drop-gold-nanoparticles-for-headspace-microextraction-and-colorimetric-assay-of-mercury-ii-in-environmental-waters
#1
Tesfaye Tolessa, Zhi-Qiang Tan, Yong-Guang Yin, Jing-Fu Liu
A novel headspace colorimetric nanosensor strategy for specific detection of Hg(II) was developed based upon analyte induced etching and amalgamation of gold nanoparticles (AuNPs). The Hg(II) was first selectively reduced to its volatile form, Hg(0), by stannous chloride (SnCl2) through chemical cold vapor generation (CVG) reaction. Then, the Hg(0) was headspace extracted into 37μL thioglycolic acid functionalized AuNP aqueous suspension containing 10% methanol as extractant and simultaneously reacted with AuNPs through the strong metallophilic Hg-Au interaction, resulting in a red-to-blue color change...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28901601/family-interests-and-medical-decisions-for-children
#2
Paul Baines
Medical decisions for children are usually justified by the claim that they are in a child's best interests. More recently, following criticisms of the best interests standard, some advocate that the family's interests should influence medical decisions for children, although what is meant by family interests is often not made clear. I argue that at least two senses of family interests may be discerned. There is a 'weak' sense (as the amalgamated interests of family members) of family interests and a 'strong' sense (that the family itself has interests over and above the interests of individuals)...
October 2017: Bioethics
https://www.readbyqxmd.com/read/28889024/the-toxicology-of-mercury-current-research-and-emerging-trends
#3
REVIEW
Geir Bjørklund, Maryam Dadar, Joachim Mutter, Jan Aaseth
Mercury (Hg) is a persistent bio-accumulative toxic metal with unique physicochemical properties of public health concern since their natural and anthropogenic diffusions still induce high risk to human and environmental health. The goal of this review was to analyze scientific literature evaluating the role of global concerns over Hg exposure due to human exposure to ingestion of contaminated seafood (methyl-Hg) as well as elemental Hg levels of dental amalgam fillings (metallic Hg), vaccines (ethyl-Hg) and contaminated water and air (Hg chloride)...
September 7, 2017: Environmental Research
https://www.readbyqxmd.com/read/28884230/environmental-impacts-caused-by-cemeteries-and-crematoria-new-funeral-technologies-and-preferences-of-the-northeastern-and-southern-brazilian-population-as-for-the-funeral-process
#4
Nicholas Joseph Tavares da Cruz, Álvaro Guillermo Rojas Lezana, Paulo da Cruz Freire Dos Santos, Ibsen Mateus Bittencourt Santana Pinto, Claudio Zancan, Gustavo Henrique Silva de Souza
Cemeteries and crematoria are the main funeral ways used in the world nowadays. It is a little-studied segment in the present days, mainly as for the possible environmental impacts in the environment, such as those derived from dental amalgam, prostheses, and dioxins, among other. This article aimed to identify the environmental impacts caused by cemeteries and crematoria and to point out new trends in funeral processes such as freeze-drying and alkaline hydrolysis. The study is justified due to the large part of the Brazilian population that do not know the environmental impacts caused by cemeteries and crematoria, as well as to bring information about the new processes...
September 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28875082/the-brazilian-version-of-the-20-item-rapid-estimate-of-adult-literacy-in-medicine-and-dentistry
#5
Agnes Fátima P Cruvinel, Daniela Alejandra C Méndez, Juliana G Oliveira, Eliézer Gutierres, Matheus Lotto, Maria Aparecida A M Machado, Thaís M Oliveira, Thiago Cruvinel
BACKGROUND: The misunderstanding of specific vocabulary may hamper the patient-health provider communication. The 20-item Rapid Estimate Adult Literacy in Medicine and Dentistry (REALMD-20) was constructed to screen patients by their ability in reading medical/dental terminologies in a simple and rapid way. This study aimed to perform the cross-cultural adaptation and validation of this instrument for its application in Brazilian dental patients. METHODS: The cross-cultural adaptation was performed through conceptual equivalence, verbatim translation, semantic, item and operational equivalence, and back-translation...
2017: PeerJ
https://www.readbyqxmd.com/read/28872182/quantum-dots-in-photocatalytic-applications-efficiently-enhancing-visible-light-photocatalytic-activity-by-integrating-cdo-quantum-dots-as-sensitizers
#6
A H Reshak
The amalgamation of a wide optical band gap photocatalyst with visible-light-active CdO quantum dots (QDs) as sensitizers is one of the most efficient ways to improve photocatalytic performance under visible light irradiation. The photocatalytic performance of cadmium benzoate ((Cd(C7H5O2)2)3(CH3CN)1) is comprehensively investigated. The estimated optical band gap of cadmium benzoate is 2.64 eV and the EPc and EPv are about -0.09 V (vs. NHE) and +2.55 V (vs. NHE), respectively, which implies that cadmium benzoate possesses a high negative reduction potential of excited electrons due to its higher conduction band position, and hence, the locations of the conduction band minimum and the valence band maximum meet the redox capacity...
September 5, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28869435/in-vivo-effects-of-limb-movement-on-nerve-stretch-strain-and-tension-a-systematic-review
#7
Tibor Szikszay, Toby Hall, Harry von Piekartz
BACKROUND: The mechanical behavior of the peripheral nervous system under elongation and tension has not been adequately established in vivo. OBJECTIVE: The purpose of this review is to investigate the mechanical behavior of the peripheral nervous system in vivo. METHODS: In vivo studies which evaluated the effects of limb movement and neurodynamic tests on peripheral nerve biomechanics were systematically searched in PubMed (Medline), the Cochrane Database, CINAHL, PEDro, Embase and Web of Science...
August 25, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28862771/oral-melanoma-and-other-pigmentations-when-to-biopsy
#8
REVIEW
M Lambertini, A Patrizi, P A Fanti, B Melotti, U Caliceti, C Magnoni, C Misciali C, C Baraldi, G M Ravaioli, E Dika
Oral pigmentations (OPs) are often neglected, although a meticulous examination of the oral cavity is important not only in the diagnosis of oral melanoma, but also for the detection of important clinical findings that may indicate the presence of a systemic disease. OPs may be classified into two major groups on the basis of their clinical appearance: focal and diffuse pigmentations, even though this distinction may not appear so limpid in some cases. The former include amalgam tattoo, melanocytic nevi, melanoacanthoma, melanosis, while the latter include physiological/racial pigmentations, smoker's melanosis, drug induced hyperpigmentations, post-inflammatory hyperpigmentations, and OPs associated with systemic diseases...
September 1, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28862223/effect-of-various-dental-restorations-on-dose-distribution-of-6-mv-photon-beam
#9
Mona Azizi, Ali Asghar Mowlavi, Mahdi Ghorbani, David Davenport
AIM: The purpose of this study is to evaluate the effect of various dental restoration materials on dose distribution in radiotherapy of head and neck cancer with 6 MV photon beam of a medical linac. SETTING AND DESIGN: The dental restorations include tooth, tooth with amalgam, tooth with Ni-Cr alloy, and tooth with Ceramco. Dose perturbation due to the dental restorations on 6 MV beam of Siemens Primus linac was calculated by MCNPX Monte Carlo code. These dental materials were separately simulated in a cubic water phantom...
July 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28862000/quantitative-proteomics-for-the-comprehensive-analysis-of-stress-responses-of-lactobacillus-paracasei-subsp-paracasei-f19
#10
Ann-Sophie Schott, Jürgen Behr, Andreas J Geißler, Bernhard Kuster, Hannes Hahne, Rudi F Vogel
Lactic acid bacteria are broadly employed as starter cultures in the manufacture of foods. Upon technological preparation, they are confronted with drying stress that amalgamates numerous stress conditions resulting in losses of fitness and survival. To better understand and differentiate physiological stress responses, discover general and specific markers for the investigated stress conditions, and predict optimal preconditioning for starter cultures, we performed a comprehensive genomic and quantitative proteomic analysis of a commonly used model system, Lactobacillus paracasei subsp...
September 18, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28857709/effect-of-refurbishing-amalgam-and-resin-composite-restorations-after-12-years-controlled-clinical-trial
#11
J Estay, J Martín, P Vildosola, I A Mjor In Memoriam, O B Oliveira, M F Andrade, G Moncada, V V Gordan, E Fernández
OBJECTIVES: The aim of this study was to clinically evaluate posterior amalgam and resin composite restorations refurbished over a period of 12 years by investigating the influence of refurbishing on the survival of restorations and comparing their behaviors with respect to controls. METHODS AND MATERIALS: Thirty-four patients were enrolled, ages 18 to 80 years, with 174 restorations, 48 restorations of resin composite (RC), and 126 restorations of amalgam (AM)...
August 31, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28855100/modelling-iron-mismanagement-in-neurodegenerative-disease-in-vitro-paradigms-pitfalls-possibilities-practical-considerations
#12
REVIEW
Sinead Healy, Jill M McMahon, Una FitzGerald
Although aberrant metabolism and deposition of iron has been associated with aging and neurodegeneration, the contribution of iron to neuropathology is unclear. Well-designed model systems that are suited to studying the putative pathological effect of iron are likely to be essential if such unresolved details are to be clarified. In this review, we have evaluated the utility and effectiveness of the reductionist in vitro platform to study the molecular mechanisms putatively underlying iron perturbations of neurodegenerative disease...
August 27, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28853125/placement-and-replacement-rates-of-amalgam-and-composite-restorations-on-posterior-teeth-in-a-military-population
#13
Benjamin D Owen, Peter H Guevara, William Greenwood
OBJECTIVE: Replacement rates of direct dental restorations have been reported to be 37% to 70%, occupying a large proportion of a general dentist's time. Variations in the rate of initial placement and replacement of direct dental restorations may be associated with material placed (amalgam or composite), age, caries risk of the patient, and other factors. The purpose of this research was to clarify where the majority of patient care time is spent as a restorative Army dentist regarding either the initial placement or replacement of failed restorations; and how the location, caries risk, and material used (amalgam or composite) affects replacement rates...
July 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28853124/effect-of-smokeless-tobacco-on-surface-roughness-of-dental-restorations
#14
Shani O Thompson, Gerald D Griffin, Nicole Meyer, Manuel Pelaez
CLINICAL RELEVANCE: Surface alterations of dental restorations can result in increased plaque biofilm. This leads to increased risk of premature restoration failure. Smokeless tobacco, in common use by some US military personnel, represents a potential source for surface alteration. If smokeless tobacco causes an untoward effect, selection of a more resistant restorative material could increase restoration longevity, thus minimizing lost work time and costs associated with replacement of failed restorations...
July 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28841092/it-s-complicated-sociocultural-factors-and-the-disclosure-decision-of-transgender-individuals-in-pakistan
#15
Abubakr Saeed, Usman Mughal, Shaista Farooq
The literature on the disclosure decision of transsexual individuals is sparse, and that which does exist either uses empirical quantitative methods or aggregates transsexuals with other non-heterosexual individuals. The current study focuses this underresearched group and examines the disclosure decision of transsexual people in Pakistan, a developing Muslim country with a unique amalgam of social, cultural, and religious ground realities. Drawing on thematic analysis technique using in-depth interviews with 16 transsexuals, we show how sociocultural factors that are inherently embedded in the environment influence the disclosure decision in work and non-work settings...
August 25, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/28822052/bariatric-surgery-worldwide-baseline-demographic-description-and-one-year-outcomes-from-the-second-ifso-global-registry-report-2013-2015
#16
Richard Welbourn, Dimitri J Pournaras, John Dixon, Kelvin Higa, Robin Kinsman, Johan Ottosson, Almino Ramos, Bart van Wagensveld, Peter Walton, Rudolf Weiner, Natan Zundel
BACKGROUND: Five International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) surveys since 1998 have estimated the volume and type of bariatric surgery being done in constituent member countries. These reports did not include baseline demographic descriptions. METHODS: An IFSO Global Registry pilot project in 2014 demonstrated that it was possible to amalgamate large numbers of individual patient data from different local and national database systems...
August 18, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28798450/atraumatic-restorative-treatment-and-minimal-intervention-dentistry
#17
J E Frencken
Too many people worldwide suffer from the consequences of untreated dentine carious lesions. This finding reflects the inability of the currently used traditional mode of treatments to manage such lesions. A change is needed. Dental training institutions should depart from the traditional 'drill and fill' treatments and embrace the holistic oral healthcare approach that is minimal intervention dentistry (MID) and includes within it minimally invasive operative skills. Dental caries is, after all, a preventable disease...
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28792458/amalgam-electrode-based-electrochemical-detector-for-on-site-direct-determination-of-cadmium-ii-and-lead-ii-from-soils
#18
Lukas Nejdl, Jindrich Kynicky, Martin Brtnicky, Marketa Vaculovicova, Vojtech Adam
Toxic metal contamination of the environment is a global issue. In this paper, we present a low-cost and rapid production of amalgam electrodes used for determination of Cd(II) and Pb(II) in environmental samples (soils and wastewaters) by on-site analysis using difference pulse voltammetry. Changes in the electrochemical signals were recorded with a miniaturized potentiostat (width: 80 mm, depth: 54 mm, height: 23 mm) and a portable computer. The limit of detection (LOD) was calculated for the geometric surface of the working electrode 15 mm² that can be varied as required for analysis...
August 9, 2017: Sensors
https://www.readbyqxmd.com/read/28783928/korean-medication-algorithm-for-depressive-disorder-comparisons-with-other-treatment-guidelines
#19
REVIEW
Hee Ryung Wang, Won-Myong Bahk, Jeong Seok Seo, Young Sup Woo, Young-Min Park, Jong-Hyun Jeong, Won Kim, Se-Hoon Shim, Jung Goo Lee, Duk-In Jon, Kyung Joon Min
In this review, we compared recommendations from the Korean Medication Algorithm Project for Depressive Disorder 2017 (KMAP-DD 2017) to other global treatment guidelines for depression. Six global treatment guidelines were reviewed; among the six, 4 were evidence-based guidelines, 1 was an expert consensus-based guideline, and 1 was an amalgamation of both evidence and expert consensus-based recommendations. The recommendations in the KMAP-DD 2017 were generally similar to those in other global treatment guidelines, although there were some differences between the guidelines...
August 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28782290/risk-of-subsequent-attention-deficit-hyperactivity-disorder-among-children-and-adolescents-with-amalgam-restorations-a-nationwide-longitudinal-study
#20
Po-Yen Lin, Jui Wang, Yu-Chih Chiang, Chen-Yin Lai, Hong-Ji Chang, Lin-Yang Chi
OBJECTIVES: Dental amalgam has been used as a common restorative material since the 1800s, but concerns have been raised regarding its purported neuropsychological effects due to the neurotoxicity of mercury. In this study, a nationwide population-based database was employed to investigate the association of dental amalgam restoration with the risk of attention-deficit/hyperactivity disorder (ADHD). METHODS: After matching, 88 068 young people with at least one tooth restoration during 2002-2010 and no ADHD history before 2001 were selected and then collected the further information until the end of 2011...
August 7, 2017: Community Dentistry and Oral Epidemiology
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