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Rami O Tadros, Alex Sher, Martin Kang, Ageliki Vouyouka, Windsor Ting, Daniel Han, Michael Marin, Peter Faries
OBJECTIVE: The ideal treatment option for patients with complex aneurysm morphology remains highly debated. The aim of this study was to investigate the impact of endovascular aneurysm repair (EVAR) with active fixation on outcomes in patients with complex aneurysm morphology. METHODS: There were 340 consecutive patients who underwent EVAR using active fixation devices, 234 with active infrarenal fixation (AIF; Gore Excluder; W. L. Gore & Associates, Flagstaff, Ariz) and 106 with active suprarenal fixation (ASF; 85 Medtronic Endurant [Medtronic, Santa Rosa, Calif] and 21 Cook Zenith [Cook Medical, Bloomington, Ind])...
March 13, 2018: Journal of Vascular Surgery
Takahiko Masuda, Masaki Hata, Kazuhiro Yamaya, Tomoyuki Suzuki, Naoya Terao
Thoracic endovascular aortic repair (TEVAR) is used to treat retrograde type A acute aortic dissection (RTAAD). In case 1, a 52-year-old man, who was conservatively managed, reported worsening back pain. Emergency TEVAR was performed 7 days after onset. After deploying two GORE Conformable TAG (CTAG) in the descending aorta, his symptoms disappeared. In case 2, a 52-year-old man with progressive worsening resistant hypertension, renal dysfunction, and respiratory failure despite maximal medical therapy underwent TEVAR 8 days after onset...
March 3, 2018: Annals of Thoracic and Cardiovascular Surgery
Thaís Teixeira de Paiva, Ricardo Martins Machado, Alexandre Trindade Motta, Claudia Trindade Mattos
INTRODUCTION: Our objectives were to verify the impact of alterations in the vertical position of the maxillary canines in smile esthetic perceptions and to determine whether exposure of the gingival margins directly affects laypersons' and orthodontists' perceptions. METHODS: A smile photograph of a male subject showing gingival zeniths was selected, and the canine vertical positions were symmetrically modified in increments of 0.5 mm, creating 4 new images varying from 1...
March 2018: American Journal of Orthodontics and Dentofacial Orthopedics
Kwasi Y Kwaadu
Fractures of the talus are significant injuries with associated significant complications where the recovery zenith is less frequently good to excellent, and more commonly fair to satisfactory. These outcomes are a consequence of combinations of the inherent intrinsic and surrounding anatomy, technical and logistic difficulties in adequate fracture access, and the high-energy mechanisms typically associated with these injuries that further traumatize the surrounding tissues. This article reviews and provides current management recommendations for these devastating injuries...
April 2018: Clinics in Podiatric Medicine and Surgery
Vladimir Vuksan, Zenith Zheng Xu, Elena Jovanovski, Alexandra L Jenkins, Uljana Beljan-Zdravkovic, John L Sievenpiper, P Mark Stavro, Andreea Zurbau, Lea Duvnjak, Michael Z C Li
PURPOSE: Despite the lack of evidence, a growing number of people are using herbal medicine to attenuate the burden of diabetes. There is an urgent need to investigate the clinical potential of herbs. Preliminary observations suggest that American ginseng (Panax quinquefolius [AG]) may reduce postprandial glycemia. Thus, we aimed to evaluate the efficacy and safety of AG as an add-on therapy in individuals with type 2 diabetes (T2DM) controlled by conventional treatment. METHODS: 24 individuals living with T2DM completed the study (F:M = 11:13; age = 64 ± 7 year; BMI = 27...
February 24, 2018: European Journal of Nutrition
Mo Chen, Chao Liu, Daoman Rui, Hao Xian
Although there is an urgent demand, it is still a tremendous challenge to use the coherent optical communication technology to the satellite-to-ground data transmission system especially at large zenith angle due to the influence of atmospheric turbulence. Adaptive optics (AO) is a considerable scheme to solve the problem. In this paper, we integrate the adaptive optics (AO) to the coherent laser communications and the performances of mixing efficiency as well as bit-error-rate (BER) at different zenith angles are studied...
February 19, 2018: Optics Express
D J du Preez, J L du Plessis, C Y Wright
BACKGROUND: Observing accurate real-time measurements of solar ultraviolet radiation (UVR) levels is important since personal excess sun exposure is associated with skin cancers. Handheld measurement devices may be helpful but their accuracy is unknown. We compare a portable, science-grade solar UVR monitoring device against two fixed, science-grade solar UVR instruments. METHODS: Instruments were (1) a fixed Solar Light 501 UV-B biometer to measure UV-B; (2) a fixed Kipp and Zonen radiometer used to measure UV-A and UV-B; and (3) Goldilux ultraviolet probes which are commercially available portable devices...
February 23, 2018: Skin Research and Technology
F Al-Harbi, I Ahmad
The rehabilitation of anterior dental aesthetics involves a multitude of disciplines, each with its own methodologies for achieving a predefined goal. The literature is awash with different techniques for a given predicament, based on both scientific credence, as well as empirical clinical judgements. An example is crown lengthening for correcting uneven gingival zeniths, increasing clinical crown lengths, and therefore, reducing the amount of maxillary gingival display that detracts from pleasing pink aesthetics...
February 23, 2018: British Dental Journal
Abel A Silva, Ana L C Yamamoto, Marcelo P Corrêa
The maintenance of ground-based instruments to measure the incidence of ultraviolet radiation (UVR) from the Sun demands strict and well-developed procedures. A piece of equipment can be out of service for a couple of weeks or months for calibration, repair, or even the improvement of the facilities where it has been set up. However, the replacement of an instrument in such circumstances can be logistically and financially prohibitive. On the other hand, the lack of data can jeopardize a long-term experiment...
February 15, 2018: Photochemistry and Photobiology
Jorge Mendez Astudillo, Lawrence Lau, Yu-Ting Tang, Terry Moore
As Global Navigation Satellite System (GNSS) signals travel through the troposphere, a tropospheric delay occurs due to a change in the refractive index of the medium. The Precise Point Positioning (PPP) technique can achieve centimeter/millimeter positioning accuracy with only one GNSS receiver. The Zenith Tropospheric Delay (ZTD) is estimated alongside with the position unknowns in PPP. Estimated ZTD can be very useful for meteorological applications, an example is the estimation of water vapor content in the atmosphere from the estimated ZTD...
February 14, 2018: Sensors
Alexander Geddes, John Robinson, Dan Smale
Atmospheric remote sensing by instruments such as spectrometers and interferometers often requires scheduling that is dependent on external factors, for example; time and solar (or lunar) zenith angle. Such instruments manufactured by Bruker often use the software package OPUS, which, while useful, is not flexible enough for automatic, repeated, atmospheric measurements of this nature. In this brief paper, we describe ASAP, a Python tool developed to run our network of Fourier transform interferometers in New Zealand and Antarctica...
February 1, 2018: Applied Optics
S Keisin Wang, Ashley R Gutwein, Alok K Gupta, Gary W Lemmon, Alan P Sawchuk, Raghu L Motaganahalli, Michael P Murphy, Andres Fajardo
OBJECTIVE: The Zenith Fenestrated (ZFEN; Cook Medical, Bloomington, Ind) aortic stent graft system was approved for commercial use by the Food and Drug Administration in April 2012. We report our single-center experience of 100 consecutive patients treated with the ZFEN platform from October 2012 to March 2017. METHODS: A retrospective review of our prospectively maintained fenestrated endovascular aneurysm repair (FEVAR) database at a tertiary care academic institution located in the Midwest United States was performed for descriptive analysis...
January 27, 2018: Journal of Vascular Surgery
Henry D Huang, Viren M Patel, Parikshit S Sharma, Zenith Jameria, Sorin Lazar, Richard Trohman, Erik Wissner
No abstract text is available yet for this article.
January 2018: HeartRhythm Case Reports
Marion Blocquet, Fangfang Guo, Maxence Mendez, Michael Ward, Sébastien Coudert, Sébastien Batut, Christophe Hecquet, Nadège Blond, Christa Fittschen, Coralie Schoemaecker
The characteristics of indoor light (intensity, spectral, spatial distribution) originating from outdoors have been studied using experimental and modeling tools. They are influenced by many parameters such as building location, meteorological conditions and the type of window. They have a direct impact on indoor air quality through a change in chemical processes by varying the photolysis rates of indoor pollutants. Transmittances of different windows have been measured and exhibit different wavelength cutoffs, thus influencing the potential of different species to be photolysed...
January 27, 2018: Indoor Air
Manuvesh Sangwan, Lei Zhu
Methyl-substituted 2-nitrophenols are important components of "brown carbon" from biomass burning. Photolysis is their major gas-phase degradation pathway. To determine the extent of light absorptions by 4-methyl-2-nitrophenol and 5-methyl-2-nitrophenol, we obtained their absorption cross-sections in the 295-400 nm region by using cavity ring-down spectroscopy. Cross-section values for 4-methyl-2-nitrophenol were (1.01±0.07)×10-18, (5.72±0.39)×10-18, and (1.80±0.17)×10-20 cm2/molecule at 295, 345, and 400 nm, where errors quoted represent 1σ measurement uncertainty...
January 27, 2018: Journal of Physical Chemistry. A
Patrick Oswald, Jordi Ignés-Mullol
The performance of light-controlled liquid crystal anchoring surfaces depends on the nature of the photosensitive moieties and on the concentration of spacer units. Here, we study the kinetics of photosensitive liquid crystal cells that incorporate an azobenzene-based self-assembled monolayer. We characterize the photoinduced homeotropic-to-planar transition and the subsequent reverse relaxation in terms of the underlying isomerization of the photosensitive layer. We show that the response time can be precisely adjusted by tuning the lateral packing of azobenzene units by means of inert spacer molecules...
September 2017: Physical Review. E
Kifle Z Aregahegn, Michael J Ezell, Barbara J Finlayson-Pitts
The environmental fates of nitenpyram (NPM), a widely used neonicotinoid insecticide, are not well known. A thin solid film of NPM deposited on a germanium attenuated total reflectance (ATR) crystal was exposed to radiation from a low-pressure mercury lamp at 254 nm, or from broadband low pressure mercury photolysis lamps centered at 350 or 313 nm. The loss during photolysis was followed in time using FTIR. The photolysis quantum yields (), defined as the number of NPM molecules lost per photon absorbed, were determined to be (9...
January 18, 2018: Environmental Science & Technology
Giuseppina Zirilli, Laura Cannavò, Francesco Vermiglio, Maria Antonia Violi, Filippo De Luca, Malgorzata Wasniewska
BACKGROUND: The available studies concerning the influence of age on the phenotypical expression of differentiated thyroid carcinoma (DTC) have hitherto compared DTC presentation either between pre-pubertal and pubertal children or between pediatric patients and aged adults; aim of this study was to ascertain for the first time whether presentation of DTC may significantly vary according to age, even within a peculiar study population covering only young patients aged less than 30 years...
January 17, 2018: Italian Journal of Pediatrics
Curtis D Mobley, Brian L Diffey
Atmospheric and oceanic radiative transfer models were used to compute spectral radiances between 285 and 400 nm onto horizontal and vertical plane surfaces over water. The calculations kept track of the contributions by the sun's direct beam, by diffuse sky radiance, by radiance reflected from the sea surface, and by water-leaving radiance. Clear, hazy, and cloudy sky conditions were simulated for a range of sun zenith angles, wind speeds, and atmospheric ozone concentrations. The radiances were used to estimate erythemal exposures due to the sun and sky, as well as from radiation reflected by the sea surface and backscattered from the water column...
January 8, 2018: Photochemistry and Photobiology
Luca Bertoglio, Diletta Loschi, Tommaso Cambiaghi, Daniele Mascia, Andrea Kahlberg, Germano Melissano, Roberto Chiesa
PURPOSE: To evaluate the 1-year outcomes of thoracoabdominal aortic aneurysm (TAAA) repair using fenestrated and branched stent-grafts and a novel balloon-expandable covered stent. METHODS: Between March 2015 and January 2017, 18 patients (median age 74.7 years; 14 men) received 43 LifeStream balloon-expandable covered stents in conjunction with Zenith fenestrated/branched stent-grafts to bridge 11 celiac trunks, 8 superior mesenteric arteries, and 24 renal arteries (total 32 fenestrations and 11 branches)...
January 1, 2018: Journal of Endovascular Therapy
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