keyword
MENU ▼
Read by QxMD icon Read
search

Fluoride

keyword
https://www.readbyqxmd.com/read/28319034/sc-co-sub-2-sub-assisted-process-for-high-energy-density-aerogel-supercapacitor-the-effect-of-go-loading
#1
Maria Sarno, Lucia Baldino, Carmela Scudieri, Stefano Cardea, Paolo Ciambelli, Ernesto Reverchon
Energy density, safety, simple and environmentally friendly preparation methods are very significant aspects in the realization of a compact supercapacitor. Herein we report the use of a supercritical CO2 assisted gel drying process (SC-CO2) for the preparation of porous electrodes containing dispersed graphene in a Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) binder membrane to sandwich in a new portable supercapacitor based on graphene oxide (GO). A GO loading of 60 wt.% has been found to give the better combination of factors (porosity, wettability, mechanical and electrochemical properties,...
March 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28317970/rheological-and-dynamic-insights-into-an-in-situ-reactive-interphase-with-graft-copolymers-in-multilayered-polymer-systems
#2
Bo Lu, Khalid Lamnawar, Abderrahim Maazouz
We provide rheological and dynamic insights into the role of an in situ reactive interphase with graft copolymers in multilayered polymer systems, using a polyamide-6 (PA6)/maleic anhydride grafted poly(vinylidene fluoride) (PVDF-g-MAH) bilayer as a model. Firstly, the influence of the reactive interphase on macroscopic melt flow behavior was studied. The in situ generated interphase from coupling reactions in bilayers significantly contributed to overall viscoelastic responses in both linear and nonlinear regimes...
March 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28317442/application-of-response-surface-methodology-and-semi-mechanistic-model-to-optimize-fluoride-removal-using-crushed-concrete-in-a-fixed-bed-column
#3
Bon-Wun Gu, Chang-Gu Lee, Seong-Jik Park
The aim of this study was to investigate the removal of fluoride from aqueous solutions by using crushed concrete fines (CCF) as a filter medium. Column experiments were performed in step injection mode under varying conditions of influent solution including pH 3-7, flow rate of 0.3-0.7 mL/min, and filter depth of 10-20 cm. The performance of fixed-bed columns was evaluated on the basis of the removal ratio (Re), uptake capacity (qe), degree of sorbent used (DoSU), and sorbent usage rate (SUR) obtained from breakthrough curves (BTC)...
March 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28317201/anionic-derivatives-of-perfluorinated-trimethylgold
#4
Babil Menjón, Alberto Pérez-Bitrián, Sonia Martínez-Salvador, Miguel Baya, José María Casas, Antonio Martín, Jesús Orduna
The homoleptic compound [PPh₄][CF₃AuCF₃] cleanly undergoes photoinduced oxidative addition of CF₃I to afford the organogold(III) derivative [PPh₄][(CF₃)₃AuI] in good yield and under mild conditions. This compound provides a convenient entry to the chemistry of the perfluorinated (CF₃)₃Au fragment whose properties are analyzed with the aid of DFT methods and compared with those of the homologous non-fluorinated (CH₃)₃Au moiety. It is found that reductive elimination of CX₃-CX₃ in the former (X = F) requires a much higher energy barrier than in the latter (X = H) and is therefore considerably less favored...
March 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28314382/erratum-to-a-randomized-double-blind-placebo-controlled-clinical-trial-of-fluoride-varnish-in-preventing-dental-caries-of-sj%C3%A3-gren-s-syndrome-patients
#5
Weini Xin, Katherine Chiu Man Leung, Edward Chin Man Lo, Mo Yin Mok, Moon Ho Leung
No abstract text is available yet for this article.
March 17, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28306752/structural-characterization-of-fluoride-species-in-shark-teeth
#6
Hsun-Hui Chang, Ming-Jou Chien, Chun-Chieh Kao, Yu-Jo Chao, Pao-Tao Yu, Chun-Yu Chang, Shing-Jong Huang, Yuan-Ling Lee, Jerry C C Chan
In shark teeth we have identified the species fluorapatite, hydroxyfluorapatite and its defect site, calcium fluoride, and potassium fluoride. Their relative amounts in teeth at different development stages have been quantified. Calcium fluoride and potassium fluoride may be associated with the fluoridation mechanism in shark teeth.
March 17, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28304114/antiviral-and-cytostatic-evaluation-of-5-1-halo-2-sulfonylvinyl-and-5-2-furyl-uracil-nucleosides
#7
Zhiwei Wen, Sazzad H Suzol, Jufang Peng, Yong Liang, Robert Snoeck, Graciela Andrei, Sandra Liekens, Stanislaw F Wnuk
Transition metal-catalyzed halosulfonylation of 5-ethynyl uracil nucleosides provided (E)-5-(1-chloro-2-tosylvinyl)uridines. Tetrabutylammonium fluoride-mediated direct CH arylation of 5-iodouracil nucleosides with furan or 2-heptylfuran gave 5-furyl-substituted nucleosides without the necessity of using the organometallic substrates. These two classes of 5-substituted uracil nucleosides as well their corresponding ester derivatives were tested against a broad range of DNA and RNA viruses and the human immunodeficiency virus (HIV)...
March 17, 2017: Archiv der Pharmazie
https://www.readbyqxmd.com/read/28301811/drug-induced-endovesiculation-of-erythrocytes-is-modulated-by-the-dynamics-in-the-cytoskeleton-membrane-interaction
#8
Walter Oberwagner, Thomas Sauer, Andreas Hermann, Rainer Prohaska, Ernst W Müllner, Ulrich Salzer
Recent studies on erythrocyte membrane fluctuations revealed that the erythrocyte cytoskeleton actively modulates its membrane association thereby regulating crucial membrane properties. Cationic amphiphilic drugs like chlorpromazine are known to induce a cup-like cell shape and vesicle formation into the cell interior, effectors of this process, however, are largely unknown. Using flow cytometry, this study explored conditions that influence endovesiculation induced by chlorpromazine. We found that inhibitors of membrane fluctuations, like ATP depletion, vanadate or fluoride, also inhibited endovesiculation whereas activation of PKC, known to decrease cytoskeleton association and increase membrane fluctuations, also enhanced endovesicle formation...
March 7, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28301686/non-operative-control-of-cavitated-approximal-caries-lesions-in-primary-molars-a-prospective-evaluation-of-cases
#9
Niels V Hansen, Bente Nyvad
The effect of non-operative caries control at cavity level is often questioned. This prospective study of cases aims to evaluate the suitability of non-operative treatment of active cavitated approximal caries lesions in primary molars by assessing clinical changes of lesions over time. Further, we evaluate childrens and parents attitudes in response to non-operative cavity treatment. Thirty-nine children attending a community dental service, aged 5-11 years, joined the evaluation based on the following criteria: i) presence of at least one active cavitated caries lesion in the distal surface of first primary molar or mesial surface of the second primary molar extending up to two thirds into dentin assessed radiographically, ii) absence of spontaneous pain, iii) absence of pulpal or periapical pathology...
March 16, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28301014/evaluation-of-surface-roughness-and-bacterial-adhesion-on-tooth-enamel-irradiated-with-high-intensity-lasers
#10
Ruchele D Nogueira, Camilla B Silva, Cesar P Lepri, Regina Guenka Palma-Dibb, Vinicius R Geraldo-Martins
The aim was to evaluate the surface roughness and bacterial adhesion on enamel irradiated with high intensity lasers, associated or not to a fluoride varnish. Eighty fragments of bovine enamel were equally divided in 8 groups (n=10). Group 1 was not treated and Group 2 received only a 5% fluoride varnish application. The other groups were irradiated with an Er:Cr:YSGG (8.92 J/cm2), an Nd:YAG (84.9 J/cm2) and a diode laser (199.04 J/cm2), associated or not to a 5% fluoride varnish. The surface roughness was measured before and after treatments...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28300544/pre-analytical-and-analytical-aspects-affecting-clinical-reliability-of-plasma-glucose-results
#11
REVIEW
Sara Pasqualetti, Federica Braga, Mauro Panteghini
The measurement of plasma glucose (PG) plays a central role in recognizing disturbances in carbohydrate metabolism, with established decision limits that are globally accepted. This requires that PG results are reliable and unequivocally valid no matter where they are obtained. To control the pre-analytical variability of PG and prevent in vitro glycolysis, the use of citrate as rapidly effective glycolysis inhibitor has been proposed. However, the commercial availability of several tubes with studies showing different performance has created confusion among users...
March 11, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28300358/a-highly-selective-colorimetric-and-fluorescent-dual-modal-probe-for-the-rapid-determination-of-fluoride-anions
#12
Changsuo Li, Chengcheng Tang, Liting Xing, Bin Sun, Shiyu Cheng, Qiang Liao, Baocun Zhu
In this work, 4-(p-hydroxybenzylidenehydrazino)-N-butyl-1,8-naphthalimide (1) has been designed and synthesized as a colorimetric and fluorescent dual-modal probe for F(-) . Compound 1 immediately detected inorganic fluoride salts using UV/vis absorption and fluorescence spectroscopy methods, and served as a 'naked-eye' indicator for F(-) with high selectivity and sensitivity. Both the absorption and fluorescence spectra show excellent linearity with the concentration of F(-) . Real-life applications demonstrated that our proposed analytical system provided a satisfactory method for the determination of F(-) ...
March 16, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28299727/metal-fluorides-tools-for-structural-and-computational-analysis-of-phosphoryl-transfer-enzymes
#13
REVIEW
Yi Jin, Robert W Molt, G Michael Blackburn
The phosphoryl group, PO3(-), is the dynamic structural unit in the biological chemistry of phosphorus. Its transfer from a donor to an acceptor atom, with oxygen much more prevalent than nitrogen, carbon, or sulfur, is at the core of a great majority of enzyme-catalyzed reactions involving phosphate esters, anhydrides, amidates, and phosphorothioates. The serendipitous discovery that the phosphoryl group could be labeled by "nuclear mutation," by substitution of PO3(-) by MgF3(-) or AlF4(-), has underpinned the application of metal fluoride (MF x ) complexes to mimic transition states for enzymatic phosphoryl transfer reactions, with sufficient stability for experimental analysis...
April 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28298972/effectiveness-of-sodium-bicarbonate-combined-with-hydrogen-peroxide-and-cpp-acpf-in-whitening-and-microhardness-of-enamel
#14
Farzaneh Ahrari, Nadia Hasanzadeh, Omid Rajabi, Zakiyeh Forouzannejad
BACKGROUND: This study investigated the effects of sodium bicarbonate (NaHCO3) combined with 1.5% hydrogen peroxide (H2O2) and casein phosphopeptide amorphous calcium phosphate fluoride (CPP-ACPF) on color and microhardness of enamel. MATERIAL AND METHODS: Seventy-five bovine incisors were immersed in a tea solution for 7.5 days. The specimens were randomly divided into five groups according to the whitening agent applied: 1) 94% NaHCO3, 2) a blend of 94% NaHCO3 and CPP-ACPF, 3) a blend of 94% NaHCO3 and 1...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28296781/efficacy-and-safety-of-medical-therapy-for-low-bone-mineral-density-in-patients-with-crohn-disease-a-systematic-review-with-network-meta-analysis
#15
Xiaojing Zhao, Changcheng Zhou, Han Chen, Jingjing Ma, Yunjuan Zhu, Peixue Wang, Yi Zhang, Haiqin Ma, Hongjie Zhang
BACKGROUND: Low bone mineral density (BMD) is a frequent complication of inflammatory bowel disease (IBD), particularly in patients with Crohn disease (CD). The aim of our study is to determine the efficacy and safety of different drugs used to treat low BMD in patients with CD. METHODS: PUBMED/MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials were searched for eligible studies. A random-effects model within a Bayesian framework was applied to compare treatment effects as standardized mean difference (SMD) with their corresponding 95% credible interval (CrI), while odds ratio (OR) was applied to compare adverse events with 95% CrI...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28295730/ternary-ni-co-f-nanocrystals-based-supercapacitors
#16
Xudong Li, Rui Ding, Wei Shi, Qilei Xu, Enhui Liu
The ternary nickel cobalt fluorides (Ni-Co-F) nanocrystals have been solvothermally constructed for supercapacitors' positive electrode materials. The optimal Ni-Co-F (Ni/Co=2:1) has showed lightly chemical shifts in the X-ray diffraction (XRD) and X-ray photoelectron spectra (XPS) compared with the bare Ni-F and Co-F. The Ni-Co-F (Ni/Co=2:1) has demonstrated typical square nanocrystal morphology together with mesoporous surface structure from transmission electron microscopy (TEM) observations and nitrogen sorption measurements...
March 14, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28294961/cross-selectivity-enhancement-of-poly-vinylidene-fluoride-hexafluoropropylene-based-sensor-arrays-for-detecting-acetone-and-ethanol
#17
Ali Daneshkhah, Sudhir Shrestha, Amanda Siegel, Kody Varahramyan, Mangilal Agarwal
Two methods for cross-selectivity enhancement of porous poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP)/carbon black (CB) composite-based resistive sensors are provided. The sensors are tested with acetone and ethanol in the presence of humid air. Cross-selectivity is enhanced using two different methods to modify the basic response of the PVDF-HFP/CB sensing platform. In method I, the adsorption properties of PVDF-HFP/CB are altered by adding a polyethylene oxide (PEO) layer or by treating with infrared (IR)...
March 15, 2017: Sensors
https://www.readbyqxmd.com/read/28293955/low-resistance-dual-purpose-air-filter-releasing-negative-ions-and-effectively-capturing-pm2-5
#18
Xinglei Zhao, Yuyao Li, Ting Hua, Pan Jiang, Xia Yin, Jianyong Yu, Bin Ding
The fatal danger of pollution due to particulate matter (PM) calls for both high-efficiency and low-resistance air purification materials, which also provide healthcare. This is however still a challenge. Herein, low-resistance air filter capable of releasing negative ions (NIs) and efficiently capturing PM2.5 was prepared by electrospinning polyvinylidene fluoride (PVDF) fibers doped with negative ions powder (NIPs). The air-resistance of fibrous membranes decreased from 9.5 to 6 Pa (decrease of 36%) on decreasing the average fiber diameter from 1...
March 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28292862/molecular-imaging-of-atheroma-deciphering-how-and-when-to-use-18-f-sodium-fluoride-and-18-f-fluorodeoxyglucose
#19
EDITORIAL
Ahmed Tawakol, Michael T Osborne, Zahi A Fayad
No abstract text is available yet for this article.
March 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28292859/-18-f-fluoride-and-18-f-fluorodeoxyglucose-positron-emission-tomography-after-transient-ischemic-attack-or-minor-ischemic-stroke-case-control-study
#20
Alex T Vesey, William S A Jenkins, Agnese Irkle, Alastair Moss, Greg Sng, Rachael O Forsythe, Tim Clark, Gemma Roberts, Alison Fletcher, Christophe Lucatelli, James H F Rudd, Anthony P Davenport, Nicholas L Mills, Rustam Al-Shahi Salman, Martin Dennis, William N Whiteley, Edwin J R van Beek, Marc R Dweck, David E Newby
BACKGROUND: Combined positron emission tomography (PET) and computed tomography (CT) can assess both anatomy and biology of carotid atherosclerosis. We sought to assess whether (18)F-fluoride or (18)F-fluorodeoxyglucose can identify culprit and high-risk carotid plaque. METHODS AND RESULTS: We performed (18)F-fluoride and (18)F-fluorodeoxyglucose PET/CT in 26 patients after recent transient ischemic attack or minor ischemic stroke: 18 patients with culprit carotid stenosis awaiting carotid endarterectomy and 8 controls without culprit carotid atheroma...
March 2017: Circulation. Cardiovascular Imaging
keyword
keyword
24411
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"