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Filler G

Mariusz Piotr Sandomierski, Beata Strzemiecka, Mohamed Mehdi Chehimi, Adam Voelkel
We describe a simple way of modification of three silica-based fillers with in situ generated 4-hydroxymethylbenzenediazonium salt (+N2-C6H4-CH2OH). The rationale for using a hydroxyl-functionalized diazonium salt is that it provides surface-functionalized fillers that can react with phenolic resins. The modification of silica by diazonium salts was assessed by FTIR and XPS. FTIR permitted to track benzene ring breathing and C-C. The absence of the characteristic N≡N stretching vibration at 2200-2300 cm-1 range indicates the loss of the diazonium group...
October 11, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Luc D Randolph, William M Palin, Gaëtane Leloup, Julian G Leprince
OBJECTIVE: The mechanical properties of dental resin-based composites (RBCs) are highly dependent on filler characteristics (size, content, geometry, composition). Most current commercial materials are marketed as "nanohybrids" (i.e. filler size <1μm). In the present study, filler characteristics of a selection of RBCs were described, aiming at identifying correlations with physico-mechanical properties and testing the relevance of the current classification. METHODS: Micron/sub-micron particles (> or <500nm) were isolated from 17 commercial RBCs and analyzed by laser diffractrometry and/or electron microscopy...
October 6, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
N Rodella, M Pasquali, A Zacco, F Bilo, L Borgese, N Bontempi, G Tomasoni, L E Depero, E Bontempi
A sustainable economy can be achieved only by assessing processes finalized to optimize the use of resources. Waste can be a relevant source of energy thanks to energy-from-waste processes. Concerns regarding the toxic fly ashes can be solved by transforming them into resource as recycled materials. The commitment to recycle is driven by the need to conserve natural resources, reduce imports of raw materials, save landfill space and reduce pollution. A new method to stabilize fly ash from Municipal Solid Waste Incinerator (MSWI) at room temperature has been developed thanks to COSMOS-RICE LIFE+ project (www...
September 2016: Heliyon
Dhivya Shanmughanandhan, Subramanyam Ragupathy, Steven G Newmaster, Saravanan Mohanasundaram, Ramalingam Sathishkumar
INTRODUCTION: India is considered the 'medicinal garden' of the world, with 8000 medicinal plants of which 960 are commercial species that are traded nationally and globally. Although scientific studies estimate herbal product adulteration as 42-66 % in North America, India does not have any published marketplace studies and subsequent estimates of adulteration in an industry facing considerable supply demands. OBJECTIVES: The goal of this project is to provide an initial assessment of herbal product authentication and adulteration in the marketplace in India by (1) developing a biological reference material (BRM) herbal DNA library for Indian herbal species using DNA barcode regions (ITS2 and rbcL) in order to facilitate accurate species resolution when testing the herbal products; and (2) assessing herbal product identification using our BRM library; and (3) comparing the use of our BRM library to identify herbal products with that of GenBank...
September 29, 2016: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
Fred G Fedok, Harry Mittelman
The prejowl sulcus is a complex anatomic structure that results from several age-related changes in the lower face. These changes include the localized atrophy of a segment of the mandible inferior to the mental foreman, fat atrophy, and dehiscence and laxity of the ligamentous and muscular components of the region. The correction of the prejowl sulcus is rarely accomplished through rhytidectomy alone. Instead, the volume deficit of the sulcus usually requires the replacement of volume. Solid implants, fillers, and fat transfer may be used to improve the contour of the lower face...
October 2016: Facial Plastic Surgery: FPS
Kristina Woodard, Lila R Gleitman, John C Trueswell
A child word-learning experiment is reported that examines 2- and 3-year-olds' ability to learn the meanings of novel words across multiple, referentially ambiguous, word occurrences. Children were told they were going on an animal safari in which they would learn the names of unfamiliar animals. Critical trial sequences began with hearing a novel word (e.g., "I see a dax! Point to the dax!") while seeing photos of two unfamiliar animals. After responding and performing on two filler trials with known animals, participants encountered the novel word again ("I see another dax! Point to the dax!") in one of two experimental conditions...
2016: Language Learning and Development: the Official Journal of the Society for Language Development
M Vasudevan, C D Johnston, T P Bastow, G Lekmine, J L Rayner, I M Nambi, G Suresh Kumar, R Ravi Krishna, G B Davis
The extent of dissolution of petroleum hydrocarbon fuels into groundwater depends greatly on fuel composition. Petroleum fuels can consist of thousands of compounds creating different interactions within the non-aqueous phase liquid (NAPL), thereby affecting the relative dissolution of the components and hence a groundwater plume's composition over long periods. Laboratory experiments were conducted to study the variability in the effective solubilities and activity coefficients for common constituents of gasoline fuels (benzene, toluene, p-xylene and 1,2,4-trimethylbenzene) (BTX) in matrices with an extreme range of molar volumes and chemical affinities...
September 20, 2016: Journal of Contaminant Hydrology
Sabrina G Fabi, Cheryl Burgess, Alastair Carruthers, Jean Carruthers, Doris Day, Kate Goldie, Martina Kerscher, Andreas Nikolis, Tatjana Pavicic, Nark-Kyoung Rho, Berthold Rzany, Sonja Sattler, Kyle Seo, William Philip Werschler, Gerhard Sattler
BACKGROUND: The popularity of aesthetic procedures in the face has led to greater disparity between treated areas and those that still show evidence of true age. Although many areas of the body often require multiple treatment procedures for optimal rejuvenation, combination therapy for specific areas is not yet well defined. OBJECTIVE: To develop recommendations for the optimal combination and ideal sequence of botulinum toxin (BoNT), hyaluronic acid, calcium hydroxylapatite (CaHA), and microfocused ultrasound with visualization in nonfacial areas across all skin phototypes...
October 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Yvette Alania, Marina D S Chiari, Marcela C Rodrigues, Victor E Arana-Chavez, Ana Helena A Bressiani, Flavio M Vichi, Roberto R Braga
OBJECTIVE: To evaluate the strength and ion release of experimental composites containing TEGDMA-functionalized calcium phosphate particles. METHODS: Seven composites containing equal parts (in mols) of BisGMA and TEGDMA and 60vol% of fillers were manipulated. Filler phase was constituted by silanized barium glass and 0% (control), 10% or 20% (volume) of dicalcium phosphate dihydrate (DPCD) particles, either non-functionalized or functionalized with two different TEDGMA contents...
September 21, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Chiang Yz, Pierone G, Al-Niaimi F
BACKGROUND: Dermal fillers are increasingly used for soft tissue augmentation of the face and hands. The widespread use of dermal fillers for rejuvenation has led to a rise in reports of associated complications. Although the majority of complications are mild and transient, serious and long-lasting complications have been observed. OBJECTIVE: This article discusses the key complications including pigmentary changes, hypersensitivity reactions, infections, nodule formation, granulomatous reactions, vascular occlusion and migration of filler material...
September 23, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
Adri D Prasetyo, Welf Prager, Mark G Rubin, Ernesto A Moretti, Andreas Nikolis
BACKGROUND: Cohesive monophasic polydensified fillers show unique viscoelastic properties and variable density of hyaluronic acid, allowing for a homogeneous tissue integration and distribution of the material. OBJECTIVE: The aim of this paper was to review the clinical data regarding the performance, tolerability, and safety of the Belotero(®) fillers for soft-tissue augmentation and rejuvenation. METHODS: A literature search was performed up until May 31, 2015 to identify all relevant articles on Belotero(®) fillers (Basic/Balance, Hydro, Soft, Intense, Volume) and equivalent products (Esthélis(®), Mesolis(®), Fortélis(®), Modélis(®))...
2016: Clinical, Cosmetic and Investigational Dermatology
Sergey V Mjakin, Maxim M Sychov, Nadezhda B Sheiko, Larisa L Ezhenkova, Alexander G Rodionov, Inna V Vasiljeva
The effect of electron beam processing (energy 900 keV, absorbed dose in the range from 25 to 600 kGy) of graphite upon the efficiency of its use as a filler in polyvinyl acetate (PVA) based vibrodamping composites is studied. Graphite treatment at optimal doses above 200 kGy is found to provide a significant increase of damping loss factor for these composites at ambient and especially at elevated temperatures. The observed improvement of vibrodamping properties correlates with the increase in the content of Broensted centers (hydroxyl groups) on modified graphite surface probably due to the additional bonding of the filler particles with each other and PVA binder...
2016: SpringerPlus
Tarek A Omran, Sufyan Garoushi, Aous A Abdulmajeed, Lippo V Lassila, Pekka K Vallittu
OBJECTIVES: Bulk-fill resin composites (BFCs) are gaining popularity in restorative dentistry due to the reduced chair time and ease of application. This study aimed to evaluate the influence of increment thickness on dentin bond strength and light transmission of different BFCs and a new discontinuous fiber-reinforced composite. MATERIALS AND METHODS: One hundred eighty extracted sound human molars were prepared for a shear bond strength (SBS) test. The teeth were divided into four groups (n = 45) according to the resin composite used: regular particulate filler resin composite: (1) G-ænial Anterior [GA] (control); bulk-fill resin composites: (2) Tetric EvoCeram Bulk Fill [TEBF] and (3) SDR; and discontinuous fiber-reinforced composite: (4) everX Posterior [EXP]...
September 10, 2016: Clinical Oral Investigations
Elena Doblhofer, Jasmin Schmid, Martin Rieß, Matthias Daab, Magdalena Suntinger, Christoph Habel, Hendrik Bargel, Christoph Hugenschmidt, Sabine Rosenfeldt, Josef Breu, Thomas Scheibel
Nature reveals a great variety of inorganic-organic composite materials exhibiting good mechanical properties, high thermal and chemical stability, and good barrier properties. One class of natural bio-nanocomposites, e.g. found in mussel shells, comprises protein matrices with layered inorganic fillers. Inspired by such natural bio-nanocomposites, the cationic recombinant spider silk protein eADF4(κ16) was processed together with the synthetic layered silicate sodium hectorite in an all-aqueous setup. Drop-casting of this bio-nanocomposite resulted in a thermally and chemically stable film reflecting a one-dimensional crystal...
September 28, 2016: ACS Applied Materials & Interfaces
Kai Liu, Fei Ding, Jiaquan Liu, Qingqing Zhang, Xingjiang Liu, Jinli Zhang, Qiang Xu
A cross-linking succinonitrile (SN)-based composite polymer electrolyte (referred to as "CLPC-CPE"), in which vinyl-functionalized SiO2 particles connect with trimethylolpropane propoxylate triacrylate (TPPTA) monomers by covalent bonds, was prepared by an ultraviolet irradiation (UV-curing) process successfully. Vinyl-functionalized SiO2 particles may react with TPPTA monomers to form a cross-linking network within the SN-based composite polymer electrolyte under ultraviolet irradiation. Vinyl-functionalized SiO2 particles as the fillers of polymer electrolyte may improve both the thermal stability of CLPC-CPE and interfacial compatibility between CLPC-CPE and electrodes effectively...
September 14, 2016: ACS Applied Materials & Interfaces
Mona T Al-Taha, Sarah A Al Youha, Courtney E Bull, Michael B Butler, Jason G Williams
BACKGROUND: Soft-tissue fillers are increasingly being used for noninvasive facial rejuvenation. They generally offer minimal downtime and reliable results. However, significant complications are reported and patients need to be aware of these as part of informed consent. The Internet serves as a vital resource to inform patients of the risks and benefits of this procedure. METHODS: Three independent reviewers performed a structured analysis of 65 Websites providing information on soft-tissue fillers...
July 2016: Plastic and Reconstructive Surgery. Global Open
I G Mathioudakis, G G Vogiatzis, C Tzoumanekas, D N Theodorou
The interaction energetics, molecular packing, entanglement network properties, segmental dynamics, and elastic constants of atactic polystyrene-amorphous silica nanocomposites in the molten and the glassy state are studied via molecular simulations using two interconnected levels of representation: (a) a coarse-grained one, wherein each polystyrene repeat unit is mapped onto a single "superatom" and the silica nanoparticle is viewed as a solid sphere. Equilibration at all length scales at this level is achieved via connectivity-altering Monte Carlo simulations...
September 28, 2016: Soft Matter
E Lintingre, F Lequeux, L Talini, N Tsapis
Powders of nanoparticles are volatile, i.e. easily disperse in air, which makes their handling difficult. Granulation of nanoparticle powders provides a solution to that issue, and it is generally performed by spray drying the nanoparticles that have been suspended in a liquid. Spray drying of a colloidal suspension consists of atomising the suspension into droplets by a fast flowing and hot gas. Once the droplets dried, the resulting dry grains/microparticles can be used in a wide range of applications - food, pharmaceutics, fillers, ceramics, etc...
September 28, 2016: Soft Matter
G Biddeci, G Cavallaro, F Di Blasi, G Lazzara, M Massaro, S Milioto, F Parisi, S Riela, G Spinelli
The purpose of this paper is to show how a functional bionanocomposite film with both antioxidant and antimicrobial activities was successfully prepared by the filling of a pectin matrix with modified Halloysite nanotubes (HNT) containing the essential peppermint oil (PO). Firstly, HNT surfaces were functionalized with cucurbit[6]uril (CB[6]) molecules with the aim to enhance the affinity of the nanofiller towards PO, which was estimated by means of HPLC experiments. The HNT/CB[6] hybrid was characterized by several methods (thermogravimetry, FT-IR spectroscopy and scanning electron microscopy) highlighting the influence of the supramolecular interactions on the composition, thermal behavior and morphology of the filler...
November 5, 2016: Carbohydrate Polymers
Anton S Tremsin, Supriyo Ganguly, Sonia M Meco, Goncalo R Pardal, Takenao Shinohara, W Bruce Feller
A nondestructive study of the internal structure and compositional gradient of dissimilar metal-alloy welds through energy-resolved neutron imaging is described in this paper. The ability of neutrons to penetrate thick metal objects (up to several cm) provides a unique possibility to examine samples which are opaque to other conventional techniques. The presence of Bragg edges in the measured neutron transmission spectra can be used to characterize the internal residual strain within the samples and some microstructural features, e...
August 1, 2016: Journal of Applied Crystallography
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