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https://www.readbyqxmd.com/read/27922558/anatomy-of-the-periorbital-area
#1
Tracey A Hotta
Dermal filler and neurotoxin treatments around the periorbital area are assessed when addressing the early signs of aging. Having a comprehensive understanding of the anatomy related to the structures of the eye may reduce the risk of complications, which include severe bruising, persistent swelling, blindness, and cerebral infarction. Understanding the function of the muscles and ligaments, location of the nerves, and the pathway of the blood vessels are crucial when addressing concerns in this area.
October 2016: Plastic Surgical Nursing
https://www.readbyqxmd.com/read/27922461/ipsilateral-ophthalmic-and-cerebral-infarctions-after-cosmetic-polylactic-acid-injection-into-the-forehead
#2
Ashwinee Ragam, Steven A Agemy, Sarita B Dave, Azita S Khorsandi, Rudrani Banik
A 55-year-old woman developed no light perception vision in her right eye 5 days after an injection of polylactic acid cosmetic filler into her right forehead. Diffuse corneal edema and anterior chamber inflammation prohibited any view to the posterior segment to identify the cause of her profound vision loss. MRI of the orbits with diffusion-weighted imaging showed hyperintensity of the right optic nerve with signal reduction on apparent diffusion coefficient mapping, consistent with ischemia. Our patient also was found to have acute infarctions in the distribution of the right anterior cerebral artery on MRI of the brain despite having no permanent focal neurologic deficits aside from vision loss...
December 2, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27918988/synthesis-of-nanocomposites-from-polyacrylamide-and-graphene-oxide-application-as-flocculants-for-water-purification
#3
M Manafi, P Manafi, Shilpi Agarwal, Arvind Kumar Bharti, M Asif, Vinod Kumar Gupta
Polyacrylamide/graphene (PAM/GO) based nanocomposites were synthesized and applied as flocculating agent for cleansing the solvent phase. In order to obtain the better dispersion of the graphene nanoplatelets in matrix the functionalization was carried out using acid and upon analytical characterization the successful fine dispersion of FGNp was found in the PAM matrix. The influence of GO concentrations on viscosity, charge demand, flocculating and dewatering with ambient micrometer-sized ground calcium carbonate (GCC) was well evaluated and elucidated...
November 28, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27918007/cosmetic-approach-to-the-asian-population
#4
Karin Eshagh, Cameron K Rokhsar
The types of cosmetic procedures favored by Asian individuals are unique and tailored to their anatomical differences. Thus, a customized approach is taken for different cosmetic procedures, ranging from neurotoxins and fillers to nonablative fractional resurfacing. The purpose of this review article is to identify the different types of cosmetic procedures commonly sought by Asian individuals and to understand how these different procedures are customized toward their aesthetic preferences. This review integrates the findings from multiple clinical trials available on PubMed...
December 2016: Seminars in Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/27916635/studies-on-the-effects-of-titanate-and-silane-coupling-agents-on-the-performance-of-poly-methyl-methacrylate-barium-titanate-denture-base-nanocomposites
#5
Nidal W Elshereksi, Mariyam J Ghazali, Andanastuti Muchtar, Che H Azhari
OBJECTIVES: This study aimed to fabricate and characterise silanated and titanated nanobarium titanate (NBT) filled poly(methyl methacrylate) (PMMA) denture base composites and to evaluate the behaviour of a titanate coupling agent (TCA) as an alternative coupling agent to silane. The effect of filler surface modification on fracture toughness was also studied. METHODS: Silanated, titanated and pure NBT at 5% were incorporated in PMMA matrix. Neat PMMA matrix served as a control...
December 1, 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27914306/a-contactless-ultrasonic-surface-wave-approach-to-characterize-distributed-cracking-damage-in-concrete
#6
Suyun Ham, Homin Song, Michael L Oelze, John S Popovics
We describe an approach that utilizes ultrasonic surface wave backscatter measurements to characterize the volume content of relatively small distributed defects (microcrack networks) in concrete. A simplified weak scattering model is used to demonstrate that the scattered wave field projected in the direction of the surface wave propagation is relatively insensitive to scatterers that are smaller than the propagating wavelength, while the scattered field projected in the opposite direction is more sensitive to sub-wavelength scatterers...
November 9, 2016: Ultrasonics
https://www.readbyqxmd.com/read/27914252/synthesis-of-copper-containing-bioactive-glass-nanoparticles-using-a-modified-st%C3%A3-ber-method-for-biomedical-applications
#7
Kai Zheng, Xinyi Dai, Miao Lu, Norbert Hüser, Nicola Taccardi, Aldo R Boccaccini
Copper (Cu)-containing bioactive glasses (BGs) are attracting attention for bone regeneration and wound healing since they have bone-bonding capability and potential osteogenesis and angiogenesis properties. In this study, highly dispersed and spherical Cu-containing bioactive glass nanoparticles (Cu-BGNs) were successfully synthesized via a modified Stöber method. The content of incorporated Cu in the particles could be tailored by adjusting the amount of the added Cu precursor, a procedure that had no significant effects on the morphological and structural characteristics of the nanoparticles...
November 15, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27912151/euclidean-distances-as-measures-of-speaker-similarity-including-identical-twin-pairs-a-forensic-investigation-using-source-and-filter-voice-characteristics
#8
Eugenia San Segundo, Athanasios Tsanas, Pedro Gómez-Vilda
There is a growing consensus that hybrid approaches are necessary for successful speaker characterization in Forensic Speaker Comparison (FSC); hence this study explores the forensic potential of voice features combining source and filter characteristics. The former relate to the action of the vocal folds while the latter reflect the geometry of the speaker's vocal tract. This set of features have been extracted from pause fillers, which are long enough for robust feature estimation while spontaneous enough to be extracted from voice samples in real forensic casework...
November 17, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27911109/confocal-microscopy-and-imaging-profilometry-a-new-tool-aimed-to-evaluate-aesthetic-procedures
#9
Gabriella Fabbrocini, Caterina Mazzella, Fabio Montagnaro, Maria Pia De Padova, Sandra Lorenzi, Aurora Tedeschi, Patrizia Forgione, Claudia Capasso, Luigi Sivero, Carla Velotti, Daniela Russo, Rosa Vitiello, Gennaro Ilardi
According to the American Academy of Aesthetic Plastic Surgeons, more than 11 million cosmetic surgical and nonsurgical procedures were performed by board-certified plastic surgeons, dermatologists and otolaryngologists in the United States, totaling more than 12 billion dollars. We performed a retrospective observational multi-centric study on patients treated with a non-animal origin cross-linked hyaluronic acid with different molecular weights for nasolabial folds, evaluating through a new imaging system, profilometric techniques with the confocal microscopy, the durability, the efficacy and the safety of this product...
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27909354/the-comprehension-of-sentences-with-unaccusative-verbs-in-aphasia-a-test-of-the-intervener-hypothesis
#10
Natalie Sullivan, Matthew Walenski, Tracy Love, Lewis P Shapiro
BACKGROUND: It is well accepted that individuals with agrammatic Broca's aphasia have difficulty comprehending some sentences with filler-gap dependencies. While investigations of these difficulties have been conducted with several different sentence types (e.g., object relatives, Wh-questions), we explore sentences containing unaccusative verbs, which arguably have a single noun phrase (NP) that is base-generated in object position but then is displaced to surface subject position. Unaccusative verbs provide an ideal test case for a particular hypothesis about the comprehension disorder-the Intervener Hypothesis-that posits that the difficulty individuals with agrammatic Broca's aphasia have comprehending sentences containing filler-gap dependencies results from similarity-based interference caused by the presence of an intervening NP between the two elements of a syntactic chain...
2017: Aphasiology
https://www.readbyqxmd.com/read/27906442/the-role-of-fillers-in-aesthetic-medicine-medico-legal-aspects
#11
E Marinelli, G Montanari Vergallo, G Reale, A di Luca, I Catarinozzi, S Napoletano, S Zaami
In recent years there has been an exponential increase of fillers use in aesthetic medicine. The popularity of this anti-wrinkle product is based on their capacity to offer significant improvement in the aesthetic field, particularly to skin rejuvenating processes with non-invasive and less expensive techniques, if compared to the surgical methods (i.e. surgical lifting). The great number of fillers on the market is composed of a large heterogenic number of biomaterials. The aim of this review was to provide an overview and a classification of the filling materials that are most commonly used...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27904276/late-onset-complication-of-fillers-paraffinoma-of-the-lower-eyelids-clinically-mimicking-xanthelasma
#12
Min-Woo Kim, Hyun-Sun Park, Hyun-Sun Yoon, Soyun Cho
Injectable poly-L-lactic acid (PLLA) is world-famous filler used in lipoatrophy and facial rejuvenation because of its collagen neogenesis effect which leads to gradual volume restoration. Until recently, quite a number of unwanted adverse events of PLLA have been reported. However, to the best of our knowledge, paraffinoma as a complication of PLLA has never been reported. We herein describe the first case of paraffinoma after Sculptra® injection and propose its possible mechanism.
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27903280/a-critical-review-of-the-current-knowledge-regarding-the-biological-impact-of-nanocellulose
#13
REVIEW
C Endes, S Camarero-Espinosa, S Mueller, E J Foster, A Petri-Fink, B Rothen-Rutishauser, C Weder, M J D Clift
Several forms of nanocellulose, notably cellulose nanocrystals and nanofibrillated cellulose, exhibit attractive property matrices and are potentially useful for a large number of industrial applications. These include the paper and cardboard industry, use as reinforcing filler in polymer composites, basis for low-density foams, additive in adhesives and paints, as well as a wide variety of food, hygiene, cosmetic, and medical products. Although the commercial exploitation of nanocellulose has already commenced, little is known as to the potential biological impact of nanocellulose, particularly in its raw form...
December 1, 2016: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/27900721/effect-of-initial-ph-and-ph-adjusted-acid-on-nutrient-recovery-from-hydrolysis-urine-by-combining-acidification-with-evaporation-crystallization
#14
Shanqing Jiang, Xiaochang Wang, Shengjiong Yang, Honglei Shi
Nutrient recovery from human urine is a promising pretreatment of domestic wastewater and provides a sustainable recyclability of nitrogen (N), phosphorus (P), and potassium (K). In this study, we present a method to recover all nutrients from hydrolysis urine (HU) in the form of solid products by combining acidification with evaporation-crystallization. The effect of initial pH (pHinit.) on N retention was investigated, and the optimal pHinit. was further determined by analysis of N retention efficiency. Additionally, crystallization process and product composition based on different pH-adjusted acids were also compared...
November 30, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27898997/the-effect-of-silica-and-prepolymer-nanoparticles-on-the-mechanical-properties-of-denture-base-acrylic-resin
#15
Pinar Cevik, Arzu Zeynep Yildirim-Bicer
PURPOSE: To evaluate how hydrophobic nanoparticle silica and prepolymer affect the flexural strength, surface hardness, surface roughness, and resilience of a denture base acrylic resin. MATERIALS AND METHODS: A total of 40 denture base acrylic resin specimens with dimensions 65 × 10 × 3 mm(3) were fabricated in this study. Specimens were divided into five experimental groups (n = 8) according to surface-treated silica and prepolymer concentration incorporated into the acrylic resin (weight %) prior to polymerization: G1 acted as control, no fillers were used in this group...
November 29, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27896790/free-volume-structure-of-acrylic-type-dental-nanocomposites-tested-with-annihilating-positrons
#16
Olha Shpotyuk, Adam Ingram, Oleh Shpotyuk
Positron annihilation spectroscopy in lifetime measuring mode exploring conventional fast-fast coincidence ORTEC system is employed to characterize free volume structure of commercially available acrylic-type dental restorative composite Charisma® (Heraeus Kulzer GmbH, Germany). The measured lifetime spectra for uncured and light-cured composites are reconstructed from unconstrained x3-term fitting and semi-empirical model exploring x3-x2-coupling decomposition algorithm. The governing channel of positron annihilation in the composites studied is ascribed to mixed positron-Ps trapping, where Ps decaying in the third component is caused entirely by input from free-volume holes in polymer matrix, while the second component is defined by free positron trapping in interfacial free-volume holes between filler nanoparticles and surrounded polymer matrix...
December 2016: Nanoscale Research Letters
https://www.readbyqxmd.com/read/27893538/blood-aspiration-test-for-cosmetic-fillers-to-prevent-accidental-intravascular-injection-in-the-face
#17
Alessandra Nogueira, Per Winlof, Jay Mashburn
No abstract text is available yet for this article.
November 23, 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/27892592/mechanical-properties-and-current-carrying-capacity-of-al-reinforced-with-graphene-bn-nanoribbons-a-computational-study
#18
D G Kvashnin, M Ghorbani-Asl, D V Shtansky, D Golberg, A V Krasheninnikov, P B Sorokin
Record high values of Young's modulus and tensile strength of graphene and BN nanoribbons as well as their chemically active edges make them promising candidates for serving as fillers in metal-based composite materials. Herein, using ab initio and analytical potential calculations we carry out a systematic study of the mechanical properties of nanocomposites constructed by reinforcing an Al matrix with BN and graphene nanoribbons. We consider a simple case of uniform distribution of nanoribbons in an Al matrix under the assumption that such configuration will lead to the maximum enhancement of mechanical characteristics...
November 28, 2016: Nanoscale
https://www.readbyqxmd.com/read/27891734/impending-skin-necrosis-after-dermal-filler-injection-a-golden-time-for-first-aid-intervention
#19
Ji Yeon Hong, Joon Seok, Ga Ram Ahn, Yu-Jin Jang, Kapsok Li, Beom Joon Kim
Vascular compromise with impending skin necrosis is one of the most serious potential complications. Early recognition of vascular occlusion and swift and aggressive treatment are required to avoid any irreversible changes. However, initial symptoms of a vascular event are often dismissed as simple post-procedural discomfort. If more than 3 days pass after filler injection, crust formation is initiated over the erythematous base along with a rim of fibrous tissue. Due to the replacement of normal tissues by fibrous material, the healing process may result in scar formation in spite of debridement and aggressive dressing changes...
November 28, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27889443/the-application-of-silicon-sol-gel-technology-to-forensic-blood-substitute-development-mimicking-aspects-of-whole-human-blood-rheology
#20
Theresa Stotesbury, Mike Illes, Paul Wilson, Andrew J Vreugdenhil
Solution-gelation chemistry has promising applications in forensic synthetic blood substitute development. This research offers a silicon-based sol-gel approach to creating stable materials that share similar rheological properties to that of whole human blood samples. Room temperature, high water content, silicon sol-gels were created using the organosilane precursors 3-glycidoxypropyltrimethoxysilane and tetraethylorthosilicate along with various concentrations of filler and pigment. Shear-thinning non-Newtonian properties were observed within most formulations of the presented materials...
November 15, 2016: Forensic Science International
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