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https://www.readbyqxmd.com/read/27917943/black-carbon-radiative-forcing-at-toa-decreased-during-aging
#1
Yu Wu, Tianhai Cheng, Lijuan Zheng, Hao Chen
During aging processing, black carbon (also called soot) particles may tend to be mixed with other aerosols, and highly influence their radiative forcing. In this study, freshly emitted soot particles were simulated as fractal aggregates composed of small spherical primary monomers. After aging in the atmosphere, soot monomers were coated by a thinly layer of sulfate as thinly coated soot particles. These soot particles were entirely embedded into large sulfate particle by further aging, and becoming heavily coated soot particles...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27908819/endovascular-treatment-of-a-traumatic-thoracic-aortic-injury-in-an-eight-year-old-patient-case-report-and-review-of-literature
#2
Maen Aboul Hosn, Rachael Nicholson, Joseph Turek, William J Sharp, Luigi Pascarella
Traumatic aortic injuries in children and adolescents are rare. Although endovascular repair has become the preferred approach for such injuries in adults, open repair has endured as the gold standard in children owing mainly to the smaller aortic and access vessel diameter and the scarcity of long term follow up data. We report a successful endovascular repair of a traumatic thoracic aortic injury in an eight year old girl using a Zenith Alpha thoracic endograft (Cook Medical, Bloomington, Ind). We also review the literature on endovascular treatment of traumatic aortic injuries in the pediatric population...
November 28, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27903485/endovascular-repair-of-thoraco-abdominal-aortic-aneurysm-in-high-surgical-risk-patients-fenestrated-and-branched-endografts
#3
E Gallitto, M Gargiulo, A Freyrie, C Bianchini Massoni, R Pini, C Mascoli, G L Faggioli, S Ancetti, A Stella
AIM: To report early and mid-term results of endovascular repair of thoraco-abdominal aneurysms (TAAA) by using of Cook-Zenith fenestrated/branched endografts (FB-EVAR) in high-surgical risk patients unfit for open repair (OR). METHODS: Between January 2012 and April 2015, all the patients with TAAA, considered at high-surgical risk for OR and treated by Cook-Zenith FB-EVAR, were prospectively enrolled. Patients were studied using a thoraco-abdominal computer tomography angiography (CTA) and dedicated software for advanced vessels analysis...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27881689/acute-type-a-aortic-dissection-treated-using-a-tubular-stent-graft-in-the-ascending-aorta-and-a-multibranched-stent-graft-in-the-aortic-arch
#4
Tilo Kölbel, Christian Detter, Sebastian W Carpenter, Fiona Rohlffs, Yskert von Kodolitsch, Sabine Wipper, Herrmann Reichenspurner, E Sebastian Debus, Nikolaos Tsilimparis
PURPOSE: To describe the combined use of a tubular stent-graft for the ascending aorta and an inner-branched arch stent-graft for patients with acute type A aortic dissection. TECHNIQUE: The technique to deploy these modular, custom-made stent-grafts is demonstrated in 2 patients with acute DeBakey type I aortic dissections and significant comorbidities precluding open surgery. Both emergent procedures were made possible by the availability of suitable devices manufactured for elective repair in other patients...
November 23, 2016: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27864456/endovascular-treatment-of-common-iliac-artery-aneurysms-with-an-iliac-branch-device-multicenter-experience-of-140-patients
#5
Hidde Jongsma, Joost A Bekken, Wouter J J Bekkers, Clark J Zeebregts, Joost van Herwaarden, Arjan Hoksbergen, Philip Cuypers, Jean Paul P M de Vries, Hence J Verhagen, Bram Fioole
PURPOSE: To evaluate the efficacy, feasibility, and long-term outcomes of the Zenith ZBIS iliac branch device (IBD) to preserve internal iliac artery (IIA) perfusion in a large Dutch multicenter cohort. METHODS: Between September 2004 and August 2015, 140 patients (mean age 70.9±7.4 years; 130 men) with 162 IBD implantations were identified in 7 vascular centers. The indication for IBD implantation was an abdominal aortic aneurysm >55 mm with a concomitant common iliac artery (CIA) aneurysm >20 mm (n=40), a CIA aneurysm with a diameter >30 mm (n=89), or revision of a type Ib endoleak after endovascular aneurysm repair (n=11)...
November 17, 2016: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27853572/anthropogenic-disruption-of-the-night-sky-darkness-in-urban-and-rural-areas
#6
Salvador Bará
The growing emissions of artificial light to the atmosphere are producing, among other effects, a significant increase of the night sky brightness (NSB) above its expected natural values. A permanent sensor network has been deployed in Galicia (northwest of Iberian peninsula) to monitor the anthropogenic disruption of the night sky darkness in a countrywide area. The network is composed of 14 detectors integrated in automated weather stations of MeteoGalicia, the Galician public meteorological agency. Zenithal NSB readings are taken every minute and the results are openly available in real time for researchers, interested stakeholders and the public at large through a dedicated website...
October 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27832988/fourteen-year-outcomes-of-abdominal-aortic-endovascular-repair-with-the-zenith-stent-graft
#7
Fabio Verzini, Lydia Romano, Gianbattista Parlani, Giacomo Isernia, Gioele Simonte, Diletta Loschi, Massimo Lenti, Piergiorgio Cao
OBJECTIVE: Long-term results of abdominal aortic aneurysm (AAA) endovascular repair are affected by graft design renewals that tend to improve the performance of older generation prostheses but usually reset the follow-up times to zero. The present study investigated the long-term outcomes of endovascular AAA repair (EVAR) using the Zenith graft, still in use without major modification, in a single center experience. METHODS: Between 2000 and 2011, 610 patients underwent elective EVAR using the Zenith endograft (Cook Inc, Bloomington, Ind) and represent the study group...
November 7, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27828068/development-of-a-fast-and-accurate-pcrtm-radiative-transfer-model-in-the-solar-spectral-region
#8
Xu Liu, Qiguang Yang, Hui Li, Zhonghai Jin, Wan Wu, Susan Kizer, Daniel K Zhou, Ping Yang
A fast and accurate principal component-based radiative transfer model in the solar spectral region (PCRTM-SOLAR) has been developed. The algorithm is capable of simulating reflected solar spectra in both clear sky and cloudy atmospheric conditions. Multiple scattering of the solar beam by the multilayer clouds and aerosols are calculated using a discrete ordinate radiative transfer scheme. The PCRTM-SOLAR model can be trained to simulate top-of-atmosphere radiance or reflectance spectra with spectral resolution ranging from 1  cm<sup>-1</sup> resolution to a few nanometers...
October 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27828040/diffraction-analysis-for-dmd-based-scene-projectors-in-the-long-wave-infrared
#9
Qing Han, Jianzhong Zhang, Jian Wang, Qiang Sun
Diffraction effects play a significant role in the digital micromirror device (DMD)-based scene projectors in the long-wave infrared (IR) band (8-12 μm). The contrast provided by these projector systems can become noticeably worse because of the diffraction characteristics of the DMD. We apply a diffraction grating model of the DMD based on the scalar diffraction theory and the Fourier transform to address this issue. In addition, a simulation calculation is conducted with MATLAB. Finally, the simulation result is verified with an experiment...
October 1, 2016: Applied Optics
https://www.readbyqxmd.com/read/27798641/switch-to-ritonavir-boosted-versus-unboosted-atazanavir-plus-raltegravir-dual-drug-therapy-leads-to-similar-efficacy-and-safety-outcomes-in-clinical-practice
#10
Pierre Gantner, Firouze Bani-Sadr, Rodolphe Garraffo, Pierre-Marie Roger, Michèle Treger, Thomas Jovelin, Pascal Pugliese, David Rey
OBJECTIVES: To assess immunovirological response, safety and pharmacokinetic of NRTI-sparing regimen dual therapy of atazanavir (ATV) and raltegravir (RAL) in maintenance strategy. METHODS: A retrospective analysis was conducted on a cohort of HIV-infected adults followed in French centers (Dat'AIDS cohort), comparing the proportions of virological and therapeutic failures between ATV + RAL and ATV/ritonavir + RAL dual therapy regimens. RESULTS: 283 patients were assessed: 185 switched for ATV + RAL and 98 for ATV/ritonavir + RAL dual therapy...
2016: PloS One
https://www.readbyqxmd.com/read/27798380/air-embolism-during-tevar-carbon-dioxide-flushing-decreases-the-amount-of-gas-released-from-thoracic-stent-grafts-during-deployment
#11
Fiona Rohlffs, Nikolaos Tsilimparis, Vasilis Saleptsis, Holger Diener, E Sebastian Debus, Tilo Kölbel
PURPOSE: To investigate the amount of gas released from Zenith thoracic stent-grafts using standard saline flushing vs the carbon dioxide flushing technique. METHODS: In an experimental bench setting, 20 thoracic stent-grafts were separated into 2 groups of 10 endografts. One group of grafts was flushed with 60 mL saline and the other group was flushed with carbon dioxide for 5 minutes followed by 60 mL saline. All grafts were deployed into a water-filled container with a curved plastic pipe; the deployment was recorded and released gas was measured using a calibrated setup...
October 26, 2016: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27793620/concomitant-parallel-endografting-and-fenestrated-experience-in-a-regional-aortic-center
#12
Mathew Wooster, Adam Tanious, Shivangi Patel, Neil Moudgill, Martin Back, Murray Shames
BACKGROUND: Off-label parallel endografting (PE) has been increasingly criticized in favor of on-label custom fenestrated endografts. There remain limited direct comparisons, however, between concurrent patient populations treated by similarly experienced operators. Hence, we seek to evaluate the relative efficacy of the two techniques in treating complex aortic pathology. METHODS: All patients treated by PE or with Cook Zenith Fenestrated (Zfen) devices from January 2010 to June 2015 were reviewed, excluding those treated for rupture...
October 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27779098/effectiveness-of-proximal-intra-operative-salvage-palmaz-stent-placement-for-endoleak-during-endovascular-aneurysm-repair
#13
Y Law, Y C Chan, S Wk Cheng
INTRODUCTION: The use of a proximal Palmaz stent is a well-recognised technique to treat proximal endoleak in endovascular aortic repair. This study aimed to report the effectiveness and safety of an intra-operative Palmaz stent for immediate type 1a endoleak in Hong Kong patients. METHODS: This case series was conducted at a tertiary hospital in Hong Kong. In a cohort of 494 patients who underwent infrarenal endovascular aortic repair from July 1999 to September 2015, 12 (2...
December 2016: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/27763312/endovascular-repair-of-blunt-thoracic-aortic-injuries-with-the-zenith-alpha-thoracic-device-updated-outcomes-from-the-transfix-study
#14
Benjamin W Starnes, Amit Dwivedi, Joseph Giglia, Karen Woo, Chyon Yeh
No abstract text is available yet for this article.
August 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27747368/cardiomyogenesis-of-periodontal-ligament-derived-stem-cells-by-dynamic-tensile-strain
#15
Daniel Pelaez, Zenith Acosta Torres, Tsz Kin Ng, Kwong Wai Choy, Chi Pui Pang, Herman S Cheung
Cellular therapies for the treatment of myocardial infarction have proven to be an invaluable tool in recent years and provide encouraging evidence for the possibility to restore normal heart function. However, questions still remain as to the optimal cell source, pre-conditioning methods and delivery techniques for such an application. This study explores the use of a population of stem cells arising from the neural crest and isolated from adult human periodontal ligament along with short-term mechanical strain as an inducer of cardiomyogenesis and possibly pre-conditioning stimulus for cellular cardiomyoplasty...
October 17, 2016: Cell and Tissue Research
https://www.readbyqxmd.com/read/27738470/migration-of-the-zenith-flex-device-during-endovascular-aortic-repair-of-an-infrarenal-aortic-aneurysm-with-a-severely-angulated-neck
#16
Yukihisa Ogawa, Hiroshi Nishimaki, Kiyoshi Chiba, Kenji Murakami, Yuka Sakurai, Keishi Fujiwara, Takeshi Miyairi, Yasuo Nakajima
A woman in her 80s with an infrarenal aortic aneurysm was scheduled for endovascular aortic repair (EVAR). The aneurysm had a severely angulated neck (SAN), and the Zenith Flex device was selected. Completion angiography showed migration of the main body resulting in right renal artery stenosis. A Palmaz genesis was placed across the renal orifice. The patient had no renal dysfunction and was discharged 7 days after EVAR. If Zenith Flex devices are used for a SAN, it is necessary to consider not only the position of the renal artery but also the appropriate position of the stent-graft...
2016: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/27731479/alveolar-dimensional-changes-relevant-to-implant-placement-after-minimally-traumatic-tooth-extraction-with-primary-closure
#17
Nelson Carranza, Hernan Bonta, Ariel F Gualtieri, Mariana A Rojas, Federico G Galli, Facundo Caride
The purpose of this study is to evaluate the dimensional changes that occur in the alveolar ridge after minimally traumatic tooth extraction by means of computed tomography (CT), with special focus on the portion of bone supporting the gingival zenith. Twenty subjects with indication for singlerooted tooth extraction and preserved alveolar walls were selected for this study. After a minimally traumatic extraction, two CT scans were performed; the first within 24 hours postextraction (TC1) and the second 6 months (TC2) later...
September 2016: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/27728949/fenestrated-endografts-for-complex-abdominal-aortic-aneurysm-repair
#18
Arne de Niet, Michel Mpj Reijnen, Ignace Fj Tielliu, Jan Willem Hp Lardenoije, Clark J Zeebregts
Since the introduction of fenestrated endovascular aneurysm repair (FEVAR) in 1996, great advances have been made in endograft development. Custom-made and off-the-shelf fenestrated and branched endografts have been used to treat patients with complex abdominal aortic and thoraco-abdominal aneurysms. Most experience has been gained with the Cook Zenith® fenestrated endograft (Cook Medical Inc., Limerick, Ireland). The Cook Zenith® endograft is customized with fenestrations, (fixed) inner or outer branches, or a combination of them, to cover a wide range of complex aneurysms...
October 6, 2016: Surgical Technology International
https://www.readbyqxmd.com/read/27693627/effects-of-fasting-and-refeeding-on-gene-expression-of-slc15a1a-a-gene-encoding-an-oligopeptide-transporter-pept1-in-the-intestine-of-mozambique-tilapia
#19
Zenith Gaye A Orozco, Satoshi Soma, Toyoji Kaneko, Soichi Watanabe
The tissue distribution of slc15a1a, a gene that encodes an oligopeptide transporter, PepT1, and its response to fasting and refeeding were investigated in the intestinal epithelium of Mozambique tilapia for a better understanding of its role on nutrient absorption. The slc15a1a was predominantly expressed in the absorptive epithelia of the anterior part of the intestine, suggesting that digested oligopeptides are primarily absorbed in the anterior intestine. The response of slc15a1a to fasting was evaluated at 1, 2, 4, 7 and 14days after the last feeding...
September 30, 2016: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/27679709/atypical-anti-glomerular-basement-membrane-disease-lessons-learned
#20
EDITORIAL
Richard J Glassock
Anti-glomerular basement membrane (GBM) disease usually pursues a self-limited course, at least from the immunological perspective. In addition, circulating antibodies to cryptic, conformational epitopes within the NC1 domain of the alpha 3 chain of Type IV Collagen are commonly found at the zenith of the clinical disease. However, exceptions to these general rules do occur, as exemplified by two remarkable cases reported in this issue of the Clinical Kidney Journal. The possible explanations for and the lessons learned from these uncommon occurrences are discussed in this short commentary...
October 2016: Clinical Kidney Journal
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