keyword
MENU ▼
Read by QxMD icon Read
search

Fillers

keyword
https://www.readbyqxmd.com/read/28930789/intracranial-penetration-during-temporal-soft-tissue-filler-injection-is-it-possible
#1
Wolfgang G Philipp-Dormston, Lara Bieler, Mathias Hessenberger, Thilo L Schenck, Konstantin Frank, Johann Fierlbeck, Sebastian Cotofana
BACKGROUND: Treating temporal volume loss for aesthetic and reconstructive purposes can be achieved by superficial or deep injections of soft tissue fillers into the temples. The latter is performed with bone contact that can lead to intracranial penetration when the bone is accidentally penetrated. OBJECTIVE: Based on a clinical case, the potential risk of accidental intracranial penetration was investigated. MATERIALS AND METHODS: Twenty fresh-frozen hemi-faces (all Caucasian ethnicity, 10 women, 10 men, mean age 72...
September 19, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28930436/development-of-a-cigarette-tobacco-filler-standard-reference-material
#2
Lane C Sander, Jeanita S Pritchett, Yasmine C Daniels, Laura J Wood, Brian E Lang, Stephen A Wise, James H Yen, Tricia L Johnson, Matthew J Walters, Tracy Phillips, Matthew R Holman, Grace E Lee, Joseph G Lisko, Brian Lane, Liza Valentin-Blasini, Clifford Watson
A new tobacco filler Standard Reference Material (SRM) has been issued by the National Institute of Standards and Technology (NIST) in September 2016 with certified and reference mass fraction values for nicotine, N-nitrosonornicotine, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, and volatiles. The constituents have been determined by multiple analytical methods with measurements at NIST and at the Centers for Disease Control and Prevention, and with confirmatory measurements by commercial laboratories. This effort highlights the development of the first SRM for reduced nicotine and reduced tobacco-specific nitrosamines with certified values for composition...
September 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28930342/yolk-shell-nanocomposite-particles-as-bioactive-bone-fillers-and-growth-factor-carriers
#3
Pujiang Shi, Sunny A Abbah, Yon Jin Chuah, Jun Li, Yong Zhang, Pengfei He, Hee Kit Wong, James C H Goh
The efficient delivery of bioactive molecules via rationally designed nanoparticles is an important focus in regenerative medicine. The yolk shell nanocomposite particles described herein are composed of silk fibroin movable cores formed within voided calcium carbonate shells to load and control the release of labile cytokines. These particles are excellent carrier vehicles of potent molecules as they sustained the release of bioactive Bone Morphogenetic Protein 2 (BMP-2) for more than 28 days in vitro. Implantation into bone defects in rabbits corroborates the in vitro results and also reveals that upon contact with phosphate containing body fluids, implanted yolk shell particles agglomerate and transform into a filler that adapts to defect contour to further act as an absorbable hemostatic agent...
September 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28929154/electrically-and-thermally-conductive-underwater-acoustically-absorptive-graphene-rubber-nanocomposites-for-multifunctional-applications
#4
Ying Li, Fan Xu, Zaishan Lin, Xianxian Sun, Qingyu Peng, Ye Yuan, Shasha Wang, Zhiyu Yang, Xiaodong He, Yibin Li
Graphene is ideal filler in nanocomposites due to its unique mechanical, electrical and thermal properties. However, it is challenging to uniformly distribute the large fraction of graphene fillers into a polymer matrix because graphene is not easily functionalized. We report a novel method to introduce a large fraction of graphene into a styrene-butadiene rubber (SBR) matrix. The obtained graphene/rubber nanocomposites were mechanically enhanced, acoustically absorptive under water, and electrically and thermally conductive...
September 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28927609/structure-and-properties-of-oil-palm-based-nanocellulose-reinforced-chitosan-nanocomposite-for-efficient-synthesis-of-butyl-butyrate
#5
Nursyafiqah Elias, Sheela Chandren, Nursyafreena Attan, Naji Arafat Mahat, Fazira Ilyana Abdul Razak, Joazaizulfazli Jamalis, Roswanira Abdul Wahab
In this study, nanocellulose (NC) was successfully extracted from oil palm frond leaves (OPFL) using a combination of bleaching, alkaline treatment and acid hydrolysis. X-ray diffractogram revealed the extracted NC was crystalline with a crystallinity index of 70.2%. This indicates its suitability as nano-fillers for preparing the chitosan/nanocellulose (CS-NC) supports to immobilize Candida rugosa lipase (CRL) to produce the CRL/CS-NC biocatalysts. FTIR, FESEM and TGA characterizations of the CRL/CS-NC confirm the CRLs were successfully conjugated to the CS-NC supports...
November 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28927589/molecular-dynamics-of-carrageenan-composites-reinforced-with-cloisite-na-montmorillonite-nanoclay
#6
M J Sanchis, M Carsí, M Culebras, C M Gómez, S Rodriguez, F G Torres
Nanocomposites comprising biodegradable carrageenan and glycerol (KCg) as the host polymer, with different contents of natural montmorillonite (MMT) as filler, were prepared by a solution casting process. Different techniques have been used to determine the interaction/behavior among the different components of the samples such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Transmission electron microscope (TEM) and, mainly, Dielectric relaxation spectroscopy (DRS). FTIR indicates hydrogen interaction between carrageenan matrix and silicate that is confirmed by the XRD data indicating some kind of carrageenan intercalation between the MMT layers...
November 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28925951/transparent-pullulan-mica-nanocomposite-coatings-with-outstanding-oxygen-barrier-properties
#7
Ilke Uysal Unalan, Derya Boyacı, Silvia Trabattoni, Silvia Tavazzi, Stefano Farris
This study presents a new bionanocomposite coating on poly(ethylene terephthalate) (PET) made of pullulan and synthetic mica. Mica nanolayers have a very high aspect ratio (α), at levels much greater than that of conventional exfoliated clay layers (e.g., montmorillonite). A very small amount of mica (0.02 wt %, which is ϕ ≈ 0.00008) in pullulan coatings dramatically improved the oxygen barrier performance of the nanocomposite films under dry conditions, however, this performance was partly lost as the environmental relative humidity (RH) increased...
September 19, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28923273/surgeon-s-guide-to-facial-soft-tissue-filler-injections-relevant-anatomy-and-safety-considerations
#8
REVIEW
Elie M Ferneini, Steven Hapelas, James Watras, Antoine M Ferneini, Drew Weyman, Jenna Fewins
The purpose of this study is to provide a review of the relevant facial anatomy related to soft tissue filler injections. Facial fillers are used daily in our clinical practice. Although their use is safe and predictable, adverse events do occur. Some of these dire events include vascular complications leading to blindness, ischemia, and even stroke. Proper knowledge and understanding of the anatomic landmarks can minimize the risk of these vascular events. In addition, early recognition and treatment are necessary to prevent permanent complications...
August 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28922480/highly-anisotropic-conductors
#9
Jiayu Wan, Jianwei Song, Zhi Yang, Dylan Kirsch, Chao Jia, Rui Xu, Jiaqi Dai, Mingwei Zhu, Lisha Xu, Chaoji Chen, Yanbin Wang, Yilin Wang, Emily Hitz, Steven D Lacey, Yongfeng Li, Bao Yang, Liangbing Hu
Composite materials with ordered microstructures often lead to enhanced functionalities that a single material can hardly achieve. Many biomaterials with unusual microstructures can be found in nature; among them, many possess anisotropic and even directional physical and chemical properties. With inspiration from nature, artificial composite materials can be rationally designed to achieve this anisotropic behavior with desired properties. Here, a metallic wood with metal continuously filling the wood vessels is developed, which demonstrates excellent anisotropic electrical, thermal, and mechanical properties...
September 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28921824/characterization-of-lacquer-films-from-the-middle-and-late-chinese-warring-states-period-476-221bc
#10
P J Jin, Y L Hu, Z B Ke
The famous lacquer wares excavated from the Jiuliandun Tombs of the middle and late Warring States period (476-221 BC) were analyzed using scanning electron microscopy/energy as well as dispersive X-ray spectrometry (SEM/EDS), Raman spectroscopy (RS), optical microscopy (OM), and X-ray diffraction (XRD). The results showed a multilayer structure in the lacquer film, including a Qihui layer (a layer made of lacquer and various plasters), undercoat layer (or finishing coat) and colored paint layer mixed with various inorganic particles, such as quartz (SiO2 ) and hydroxyapatite [Ca5 (PO4 )3 (OH)], as fillers in the Qihui layers or orpiment (As2 S3 ) and cinnabar (HgS), which were used as a yellow or red pigment, respectively...
September 18, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28921710/non-stick-properties-of-thin-film-coatings-on-dental-restorative-instruments
#11
Jarmo Leppäniemi, Sasha Hoshian, Kimmo Suomalainen, Toni Luoto, Ville Jokinen, Jari Koskinen
The non-stick properties of thin-film coatings on dental-restorative instruments were investigated by static contact-angle measurement using dental filler resin as well as by scanning electron microscopy of the amount of sticking dental restorative material. Furthermore, using a customized dipping measurement set-up, non-stick properties were evaluated by measuring force-by-time when the instrument was pulled out of restorative material. Minor improvements in non-stick properties were obtained with commercial diamond-like carbon and commercial polytetrafluoroethylene-based coatings...
September 18, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/28921519/impact-of-pork-collagen-superfine-powder-on-rheological-and-texture-properties-of-harbin-red-sausage
#12
Wenhang Wang, Xiao Wang, Wenping Zhao, Guixian Gao, Xiaowei Zhang, Yabin Wang, Yanan Wang
It is a challenge for producers to looking for excellent filler to satisfy the required qualities of high grade meat products such as Harbin red sausage in China. Four collagen superfine powders (CSPs) from pig skin with different heating pretreatments, named as T0 (non-heating), T1 (at 60 °C for 20 min), T2 (at 80 °C for 20 min), T3 (at 120 °C for 10 min) respectively, at various concentrations (1, 3, 5 wt%) were added to the sausage and their impact on sausage properties was investigated. Rheological results showed that addition of CSPs especially T2 increased the elastic modulus (G') of sausage, indicating the enhanced stabilization of meat batter due to formation of a coherent protein network...
September 18, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28920675/mitigation-of-n2o-emission-from-aquaponics-by-optimizing-the-nitrogen-transformation-process-aeration-management-and-exogenous-carbon-pla-addition
#13
Yina Zou, Zhen Hu, Jian Zhang, Yingke Fang, Minying Li, Jianda Zhang
N2O production in aquaponics is an inevitable concern when aquaponics is developed as a future production system. In the present study, two attempts were applied to mitigate N2O emission from aquaponics, i.e., aeration in hydroponic bed (HA) and addition of polylactic acid (PLA) into fillers (PA). Results showed that N2O emission from HA and PA was decreased by 47.1-58.1% and 43.2-74.9% respectively compared with that in control. Denitrification was proved to be the main emission pathway in all treatments, representing 62...
September 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28920429/hybrid-mos2-h-bn-nanofillers-as-synergic-heat-dissipation-and-reinforcement-additives-in-epoxy-nanocomposites
#14
Helio Ribeiro, João Paulo Campos Trigueiro, Wellington M Silva, Cristiano F Woellner, Peter Samora Owuor, Alin Cristian Chipara, Magnovaldo Carvalho Lopes, Chandra Sekhar Tiwary, Jairo José Pedrotti, Rodrigo Villegas Salvatierra, James M Tour, Nitin Chopra, Ihab N Odeh, Glaura Silva, Pulickel M Ajayan
Two-dimensional (2D) nanomaterials as molybdenum disulfide (MoS2), hexagonal boron nitride (h-BN), and the hybrid (MoS2/h-BN) were employed as fillers to improve the physical properties of epoxy composites. Nanocomposites were produced in different concentrations and studied in their microstructure, mechanical and thermal properties. The hybrid 2D mixture imparted efficient reinforcement to the epoxy leading to increases of up to 95% in tensile strength, 60% in ultimate strain and 58% in Young's modulus. Moreover, an enhancement of 203% in thermal conductivity was achieved for the hybrid composite as compared to neat polymer...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28917921/effect-of-oxidized-chitin-nanocrystals-isolated-by-ammonium-persulfate-method-on-the-properties-of-carboxymethyl-cellulose-based-films
#15
Ahmed A Oun, Jong-Whan Rhim
Oxidized chitin nanocrystals (ChNCs) were isolated from crab shell chitin using ammonium persulfate (APS) method. The oxidized ChNCs were in needle shape with a diameter of 15nm, the length of 400-500nm, and crystallinity index of 93.5%. Carboxymethyl cellulose (CMC)-based films reinforced with the ChNCs (0, 1, 5, and 10wt.%) were flexible and transparent. The mechanical strength of the CMC film increased significantly (p<0.05) after blending with the ChNCs. The tensile strength (TS) and elastic modulus (EM) increased by 88% and 243% when 10wt...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917873/bionanocomposites-produced-from-cassava-starch-and-oil-palm-mesocarp-cellulose-nanowhiskers
#16
Adriana de Campos, Alfredo R de Sena Neto, Vanessa B Rodrigues, Bruno R Luchesi, Francys K V Moreira, Ana Carolina Correa, Luiz H C Mattoso, José M Marconcini
Cassava starch films reinforced with cellulose nanowhiskers from oil palm mesocarp fibers were produced by casting. Nanowhiskers were obtained by sulphuric acid hydrolysis followed by microfluidization and incorporated in starch films at various loadings (1-10wt%). Morphological and mechanical characterizations showed that the reinforcing effect of oil palm cellulose nanowhiskers was significant at loadings of up to 6wt%, which was determined to be the nanowhiskers percolation threshold. Above this content, formation of agglomerates became more significant, causing a decrease in mechanical properties of starch bionanocomposites...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28915290/lifting-the-lower-face-with-an-absorbable-polydioxanone-pdo-thread
#17
Kian Karimi, Alexandra Reivitis
Traditional rejuvenation techniques include chemical peels, rhytidectomy of the skin, laser resurfacing, injection of dermal fillers and neurotoxins, and invasive surgical procedures. Patients with brow ptosis, jowl formation, and deepening nasolabial folds currently seek antiaging procedures with no incisions and minimal downtime such as thread-lifting with barbed sutures. The present report describes a case in which polydioxanone threads were used to lift the lower third of a patient's face. Fillers were used to supplement the results achieved by the thread lift because often, when tissue has been lifted, volume deficits are revealed, which can be corrected with dermal fillers...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28915282/factors-affecting-the-rheological-measurement-of-hyaluronic-acid-gel-fillers
#18
Z Paul Lorenc, Åke Öhrlund, Katarina Edsman
BACKGROUND: With the number of available dermal fillers increasing, so is the demand for scientifically based comparisons, often with rheological properties in focus. Since analytical results are always influenced by instrument settings, consensus on settings is essential to make comparison of results from different investigators more useful. OBJECTIVE: Preferred measurement settings for rheological analysis of hyaluronic acid (HA) fillers are suggested, and the reasoning behind the choices is presented by demonstrating the effect of different measurement settings on select commercial HA fillers...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28915281/precision-in-dermal-filling-a-comparison-between-needle-and-cannula-when-using-soft-tissue-fillers
#19
Tatjana Pavicic, Konstantin Frank, Katharina Erlbacher, Romy Neuner, Stefan Targosinski, Thilo Schenck, Robert H Gotkin, Sebastian Cotofana
BACKGROUND: Precise implantation of soft tissue fillers to treat the signs of aging is crucial for patient safety and the best aesthetic outcome. Injections are performed commonly with either needles or cannulas, but quantitative comparative data on precise implantation are still elusive. METHODS: Ten fresh-frozen cephalic foreheads (9 male, 1 female) were injected with radiopaque material using both needles and cannulas. Needle injection relied on a perpendicular transcutaneous approach, whereas cannulas were moved in the supra-periosteal plane until reaching the same location as the needle...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28913927/the-efficacy-and-safety-of-a-monophasic-hyaluronic-acid-filler-in-the-correction-of-nasolabial-folds-a-randomized-multicenter-single-blinded-split-face-study
#20
Hyun Jung Kwon, Eun Jung Ko, Sun Young Choi, Eun Ja Choi, Yu-Jin Jang, Beom Joon Kim, Yang Won Lee
BACKGROUND: The different rheological properties of hyaluronic acid (HA) filler reflect their specific manufacturing processes and resultant physicochemical characteristics. However, there are few researches about the relationship between product differences and clinical outcome when HA fillers are used for nasolabial folds (NLFs). AIMS: This study sought to compare the rheological properties, efficacy and safety of a monophasic HA filler, and a well-studied biphasic HA filler, in the treatment of NLFs...
September 14, 2017: Journal of Cosmetic Dermatology
keyword
keyword
11684
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"