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Thomas Spray

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https://www.readbyqxmd.com/read/28651200/nanostructured-micro-raspberries-from-superparamagnetic-iron-oxide-nanoparticles-studying-agglomeration-degree-and-redispersibility-of-nanoparticulate-powders-via-magnetisation-measurements
#1
Claudia Stauch, Stephan Späth, Thomas Ballweg, Robert Luxenhofer, Karl Mandel
Surface modified superparamagnetic iron oxide nanoparticles are assembled into nanostructured micro-raspberry particles via spray drying. The micro-raspberry powder is readily redispersed to individual nanoparticles or nanostructured sub-units, depending on the initially adjusted nanoparticle modification. In this work, it is demonstrated how the technique of magnetic zero-field-cooled/field-cooled (ZFC/FC) measurements can be used to judge the degree of agglomeration, i.e. the extent of hard-agglomerates and soft-agglomerates in a system and predict the redispersibility of the powder particles...
June 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28598945/long-term-outcomes-of-pediatric-cardiac-patients-supported-by-extracorporeal-membrane-oxygenation
#2
Matthew D Elias, Barbara-Jo Achuff, Richard F Ittenbach, Chitra Ravishankar, Thomas L Spray, Stephanie Fuller, Lisa M Montenegro, J William Gaynor, Matthew J O'Connor
OBJECTIVE: Extracorporeal membrane oxygenation is an important form of short-term mechanical support in children with cardiac disease, but information on long-term outcomes and quality of life is limited. The primary objective of this study was to determine the long-term outcomes of children previously supported by extracorporeal membrane oxygenation for cardiac etiologies. DESIGN: A retrospective analysis was performed on patients with cardiac disease managed with extracorporeal membrane oxygenation between January 1, 1995, and December 31, 2012, at the Children's Hospital of Philadelphia...
June 8, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28597943/identification-of-eight-synthetic-cannabinoids-including-5f-akb48-in-seized-herbal-products-using-dart-tof-ms-and-lc-qtof-ms-as-nontargeted-screening-methods
#3
Katherine N Moore, Demetra Garvin, Brian F Thomas, Megan Grabenauer
Synthetic cannabinoids are sprayed onto plant material and smoked for their marijuana-like effects. Clandestine manufacturers modify synthetic cannabinoid structures by creating closely related analogs. Forensic laboratories are tasked with detection of these analog compounds, but targeted analytical methods are often thwarted by the structural modifications. Here, direct analysis in real time coupled to accurate mass time-of-flight mass spectrometry (DART-TOF-MS) in combination with liquid chromatography quadruple time-of-flight mass spectrometry (LC-QTOF-MS) are presented as a screening and nontargeted confirmation method, respectively...
June 9, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28580463/effect-of-cavity-contamination-by-blood-and-hemostatic-agents-on-marginal-adaptation-of-composite-restorations
#4
Sabine Groddeck, Thomas Attin, Tobias T Tauböck
PURPOSE: To determine the effects of contamination of tooth cavities by hemostatic agents applied after blood contamination on marginal adaptation of composite restorations bonded with etch-and-rinse and self-etch adhesives. MATERIALS AND METHODS: Cervical cavities (n = 10 per group) were contaminated with blood and subsequently treated with aluminum chloride (Racestyptine) or ferric sulfate (Astringedent, ViscoStat) hemostatic agents. After water rinsing, composite restorations were placed using either an etch-and-rinse (OptiBond FL) or self-etch (Opti- Bond All-in-One) adhesive...
June 2, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28532065/in-vitro-performance-of-ag-incorporated-hydroxyapatite-and-its-adhesive-porous-coatings-deposited-by-electrostatic-spraying
#5
Ozkan Gokcekaya, Thomas J Webster, Kyosuke Ueda, Takayuki Narushima, Celaletdin Ergun
Bacterial infection of implanted materials is a significant complication that might require additional surgical operations for implant retrieval. As an antibacterial biomaterial, Ag-containing hydroxyapatite (HA) may be a solution to reduce the incidences of implant associated infections. In this study, pure, 0.2mol% and 0.3mol% Ag incorporated HA powders were synthesized via a precipitation method. Colloidal precursor dispersions prepared from these powders were used to deposit porous coatings onto titanium and stainless steel substrates via electrostatic spraying...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28445412/assessing-the-efficacy-of-first-aid-measures-in-physalia-sp-envenomation-using-solution-and-blood-agarose-based-models
#6
Christie L Wilcox, Jasmine L Headlam, Thomas K Doyle, Angel A Yanagihara
Stings from the hydrozoan species in the genus Physalia cause intense, immediate skin pain and elicit serious systemic effects. There has been much scientific debate about the most appropriate first aid for these stings, particularly with regard to whether vinegar use is appropriate (most current recommendations recommend against vinegar). We found that only a small percentage (≤1.0%) of tentacle cnidae discharge during a sting event using an ex vivo tissue model which elicits spontaneous stinging from live cnidarian tentacles...
April 26, 2017: Toxins
https://www.readbyqxmd.com/read/28389216/effects-of-cooling-before-and-during-simulated-match-play-on-thermoregulatory-responses-of-athletes-with-tetraplegia
#7
Katy E Griggs, George Havenith, Thomas A W Paulson, Michael J Price, Victoria L Goosey-Tolfrey
OBJECTIVES: Athletes with high level spinal cord injuries (tetraplegia) are under greater thermal strain during exercise than the able-bodied. The purpose of this study was to investigate the effectiveness of pre-cooling using an ice vest and the combination of pre-cooling and cooling during play using water sprays in athletes with tetraplegia. DESIGN: Counter-balanced, cross-over design. METHODS: Eight wheelchair rugby players with tetraplegia completed a 60min intermittent sprint protocol (ISP) on a wheelchair ergometer in 20...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28385177/effect-of-fontan-associated-morbidities-on-survival-with-intact-fontan-circulation
#8
Kiona Y Allen, Tacy E Downing, Andrew C Glatz, Lindsay S Rogers, Chitra Ravishankar, Jack Rychik, Stephanie Fuller, Lisa M Montenegro, James M Steven, Thomas L Spray, Susan C Nicolson, James William Gaynor, David J Goldberg
Although survival after the Fontan operation has improved, little is known about the burden of major medical morbidities associated with the modern total cavopulmonary connection (TCPC). A total of 773 consecutive patients who underwent a first Fontan operation at our institution between 1992 and 2009 were retrospectively reviewed. All subjects underwent TCPC (53% lateral tunnel, 47% extracardiac conduit). Median length of follow-up was 5.3 years (interquartile range 1.4 to 11.2), and 30% had follow-up >10 years...
June 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28381279/loa-loa-vectors-chrysops-spp-perspectives-on-research-distribution-bionomics-and-implications-for-elimination-of-lymphatic-filariasis-and-onchocerciasis
#9
REVIEW
Louise Kelly-Hope, Rossely Paulo, Brent Thomas, Miguel Brito, Thomas R Unnasch, David Molyneux
BACKGROUND: Loiasis is a filarial disease caused Loa loa. The main vectors are Chrysops silacea and C. dimidiata which are confined to the tropical rainforests of Central and West Africa. Loiasis is a mild disease, but individuals with high microfilaria loads may suffer from severe adverse events if treated with ivermectin during mass drug administration campaigns for the elimination of lymphatic filariasis and onchocerciasis. This poses significant challenges for elimination programmes and alternative interventions are required in L...
April 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28370968/two-new-ppx2-mutations-associated-with-resistance-to-ppo-inhibiting-herbicides-in-amaranthus-palmeri
#10
Darci A Giacomini, Alinna M Umphres, Haozhen Nie, Thomas C Mueller, Lawrence E Steckel, Bryan G Young, Robert C Scott, Patrick J Tranel
BACKGROUND: Resistance to herbicides that inhibit protoporphyrinogen oxidase (PPO) is a widespread and growing problem for weed managers across the midwestern and midsouthern United States. In Amaranthus spp., this resistance is known to be conferred by a glycine deletion at the 210(th) amino acid (ΔG210) in PPO2. Preliminary analysis indicated that the ΔG210 mutation did not fully account for observed resistance to PPO inhibitors in two Amaranthus palmeri populations from Tennessee and one from Arkansas...
April 3, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28341469/long-term-survival-after-the-fontan-operation-twenty-years-of-experience-at-a-single-center
#11
Tacy E Downing, Kiona Y Allen, Andrew C Glatz, Lindsay S Rogers, Chitra Ravishankar, Jack Rychik, Jennifer A Faerber, Stephanie Fuller, Lisa M Montenegro, James M Steven, Thomas L Spray, Susan C Nicolson, J William Gaynor, David J Goldberg
OBJECTIVE: Existing studies of patients palliated with the Fontan operation are limited by heterogeneous patient populations and incomplete follow-up. This study aimed to describe long-term post-Fontan survival in a modern patient cohort. METHODS: All 773 patients who underwent a first Fontan operation at our institution between 1992 and 2009 were reviewed. The primary outcome was the composite endpoint of Fontan takedown, heart transplantation, or death before 2013...
July 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28339165/a-randomised-controlled-trial-of-sodium-citrate-spray-for-non-conductive-olfactory-disorders
#12
C M Philpott, S E Erskine, A Clark, A Leeper, M Salam, R Sharma, G E Murty, T Hummel
OBJECTIVES: Previous research has suggested that sodium citrate improves hyposmia by decreasing mucus calcium levels in the nose. This study aimed to confirm or refute this effect in a single application and assess potential side-effects. DESIGN: Study design was a randomised double-blind controlled trial of sodium citrate nasal spray (intervention) vs sterile water (control). Fifty-five patients with non-conductive olfactory loss were randomised to receive the intervention or placebo...
March 24, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28325539/n2-gas-egress-from-patients-airways-during-ln2-spray-cryotherapy
#13
John P O'Connor, Brian M Hanley, Thomas I Mulcahey, Ellen E Sheets, Kacey W Shuey
Spray cryotherapy using liquid nitrogen (LN2) is a general surgical tool used to ablate benign or malignant lesions. Adequate egress of the gaseous nitrogen (N2) generated during this process must be provided for safe use when LN2 is used within the body rather than topically. When delivered to either the gastrointestinal tract (requiring active venting via a suction tube) or body cavities open to room barometric pressure (such as lung airways) allowing for passive venting, the N2 gas generated from the boiling process must be evacuated...
March 18, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28322007/one-electron-initiated-two-electron-oxidation-of-water-by-aluminum-porphyrins-with-earth-s-most-abundant-metal
#14
Fazalurahman Kuttassery, Siby Mathew, Shogo Sagawa, Sebastian Nybin Remello, Arun Thomas, Daisuke Yamamoto, Satomi Onuki, Yu Nabetani, Hiroshi Tachibana, Haruo Inoue
We report herein a new molecular catalyst for efficient water splitting, aluminum porphyrins (tetra-methylpyridiniumylporphyrinatealuminum: AlTMPyP), containing earth's most abundant metal as the central ion. One-electron oxidation of the aluminum porphyrin initiates the two-electron oxidation of water to form hydrogen peroxide as the primary reaction product with the lowest known overpotential (97 mV). The aluminum-peroxo complex was detected by a cold-spray ionization mass-spectrometry in high-resolution MS (HRMS) mode and the structure of the intermediate species was further confirmed using laser Raman spectroscopy, indicating the hydroperoxy complex of AlTMPyP to be the key intermediate in the reaction...
March 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28320512/effect-of-congenital-heart-disease-on-4-year-neurodevelopment-within-multiple-gestation-births
#15
Amy H Schultz, Richard F Ittenbach, Marsha Gerdes, Gail P Jarvik, Gil Wernovsky, Judy Bernbaum, Cynthia Solot, Robert R Clancy, Susan C Nicolson, Thomas L Spray, Donna McDonald-McGinn, Elaine Zackai, J William Gaynor
OBJECTIVES: We sought to assess the effect of congenital heart disease requiring infant surgery with cardiopulmonary bypass on neurodevelopmental outcomes and growth at 4 years of age, while matching for gestational age, socioeconomic status, maternal gestational conditions, home environment, and parental intelligence by studying multiple-gestation births. METHODS: We performed within-family comparison of 14 multiple-gestation births in which 1 child had congenital heart disease requiring surgery with cardiopulmonary bypass at ≤6 months of age...
February 21, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28287055/congenital-pulmonary-lymphangiectasia-and-early-mortality-after-stage-1-reconstruction-procedures
#16
Jeremy L Herrmann, Mallory L Irons, Christopher E Mascio, Jack Rychik, Thomas L Spray, J William Gaynor, Jennifer E Pogoriler
OBJECTIVES: Pulmonary lymphangiectasia associated with hypoplastic left heart syndrome with an intact or restrictive atrial septum may result from increased left atrial pressure, and is associated with worse outcomes following staged reconstruction due to lung dysfunction and significant hypoxaemia. Our objective was to characterise the incidence of pulmonary lymphangiectasia in cases of early mortality following stage 1 reconstructions. METHODS: An institutional cardiac surgical database was retrospectively searched for patients who died within 30 days following a stage 1 reconstruction between 1 January, 1984 and 31 December, 2013...
March 13, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28276775/cannabinoids-therapeutic-use-what-is-our-current-understanding-following-the-introduction-of-thc-thc-cbd-oromucosal-spray-and-others
#17
REVIEW
Mauro Maccarrone, Rafael Maldonado, Miguel Casas, Thomas Henze, Diego Centonze
The complexity of the endocannabinoid (eCB) system is becoming better understood and new drivers of eCB signaling are emerging. Modulation of the activities of the eCB system can be therapeutic in a number of diseases. Research into the eCB system has been paralleled by the development of agents that interact with cannabinoid receptors. In this regard it should be remembered that herbal cannabis contains a myriad of active ingredients, and the individual cannabinoids have quite distinct biological activities requiring independent studies...
April 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28268011/hands-on-surgical-training-of-congenital-heart-surgery-using-3-dimensional-print-models
#18
Shi-Joon Yoo, Thomas Spray, Erle H Austin, Tae-Jin Yun, Glen S van Arsdell
OBJECTIVE: Patient-based congenital heart surgery (CHS) training is opportunity-based and difficult. Three-dimensional (3D) print models of the heart were used for hands-on surgical training (HOST) at the 2015 AATS and subsequently in 2 local institutions. We aim to introduce the process of 3D printing for surgical simulation and to present the attendee's responses. METHODS: Using CT or MR angiograms, the models of congenital heart disease were created and printed with flexible rubberlike material...
February 9, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28255257/metered-cryospray%C3%A2-a-novel-uniform-controlled-and-consistent-in-vivo-application-of-liquid-nitrogen-cryogenic-spray
#19
Thomas I Mulcahey, James E Coad, Wei Li Fan, Daniel J Grasso, Brian M Hanley, Heather V Hawkes, Sean A McDermott, John P O'Connor, Ellen E Sheets, Charles J Vadala
In this article, a novel cryotherapy approach using a uniform, controlled, and consistent in vivo application of liquid nitrogen (LN2) spray as a Metered Cryospray(™) (MCS) process is described. Although MCS may be used for many potential clinical applications, this paper focuses on the development that led to the controlled and consistent delivery of radial LN2 cryogen spray in order to generate a uniform circumferential effect and how the amount of MCS can be adapted to specifically ablate targeted diseases within a patient's lumen such as an airway or esophagus...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/28183343/spectrum-malaria-a-user-friendly-projection-tool-for-health-impact-assessment-and-strategic-planning-by-malaria-control-programmes-in-sub-saharan-africa
#20
Matthew Hamilton, Guy Mahiane, Elric Werst, Rachel Sanders, Olivier Briët, Thomas Smith, Richard Cibulskis, Ewan Cameron, Samir Bhatt, Daniel J Weiss, Peter W Gething, Carel Pretorius, Eline L Korenromp
BACKGROUND: Scale-up of malaria prevention and treatment needs to continue but national strategies and budget allocations are not always evidence-based. This article presents a new modelling tool projecting malaria infection, cases and deaths to support impact evaluation, target setting and strategic planning. METHODS: Nested in the Spectrum suite of programme planning tools, the model includes historic estimates of case incidence and deaths in groups aged up to 4, 5-14, and 15+ years, and prevalence of Plasmodium falciparum infection (PfPR) among children 2-9 years, for 43 sub-Saharan African countries and their 602 provinces, from the WHO and malaria atlas project...
February 10, 2017: Malaria Journal
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