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https://www.readbyqxmd.com/read/28542014/oak-ridge-reservation-environmental-protection-rad-neshaps-radionuclide-inventory-web-database-and-rad-neshaps-source-and-dose-database
#1
Patricia A Scofield, Linda L Smith, David N Johnson
The U.S. Environmental Protection Agency promulgated national emission standards for emissions of radionuclides other than radon from US Department of Energy facilities in Chapter 40 of the Code of Federal Regulations (CFR) 61, Subpart H. This regulatory standard limits the annual effective dose that any member of the public can receive from Department of Energy facilities to 0.1 mSv. As defined in the preamble of the final rule, all of the facilities on the Oak Ridge Reservation, i.e., the Y-12 National Security Complex, Oak Ridge National Laboratory, East Tennessee Technology Park, and any other U...
July 2017: Health Physics
https://www.readbyqxmd.com/read/28533933/negative-wound-pressure-therapy-is-safe-and-useful-in-pediatric-burn-patients
#2
Yanhan Ren, Philip Chang, Robert L Sheridan
INTRODUCTION: Negative Pressure Wound Therapy (NPWT) has proven to be a powerful tool in facilitating healing of difficult wounds of a variety of etiologies. The pediatric experience with NPWT has been limited due to concerns about vascular compression and pain associated with treatment. METHOD: A retrospective review was performed to evaluate the therapeutic effect of NPWT on children with difficult wounds due to burns or soft-tissue trauma. NPWT was instituted in the operating room under general anesthesia using a commercially available system...
2017: International Journal of Burns and Trauma
https://www.readbyqxmd.com/read/28533633/photolithography-free-laser-patterned-hf-acid-resistant-chromium-polyimide-mask-for-rapid-fabrication-of-microfluidic-systems-in-glass
#3
Konstantin O Zamuruyev, Yuriy Zrodnikov, Cristina E Davis
Excellent chemical and physical properties of glass, over a range of operating conditions, make it a preferred material for chemical detection systems in analytical chemistry, biology, and the environmental sciences. However, it is often compromised with SU8, PDMS, or Parylene materials due to the sophisticated mask preparation requirements for wet etching of glass. Here, we report our efforts toward developing a photolithography-free laser-patterned hydrofluoric acid-resistant chromium-polyimide tape mask for rapid prototyping of microfluidic systems in glass...
January 2017: Journal of Micromechanics and Microengineering: Structures, Devices, and Systems
https://www.readbyqxmd.com/read/28520953/evolving-insights-into-the-epidemiology-and-control-of-clostridium-difficile-in-hospitals
#4
Daniel A Caroff, Deborah S Yokoe, Michael Klompas
Typing studies suggest most cases of hospital-onset Clostridium difficile infection are unrelated to other cases of active disease in the hospital. New cases may instead be due to transmissions from asymptomatic carriers or progression of latent C.difficile present-on-admission to active infection. Direct exposure to antibiotics remains the primary risk factor for C.difficile infection but ward-level antibiotic use, antibiotic exposure of the prior room occupant, and C.difficile status of the prior room occupant increase risk for C...
May 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28516280/optimization-of-an-ultrasound-assisted-derivatization-for-gc-ms-analysis-of-oxygenated-organic-species-in-atmospheric-aerosol
#5
Maria Chiara Pietrogrande, Francesco Manarini, José Benito Quintana, Rosario Rodil, Eugenia Villaverde-de-Sáa, Marco Visentin
A novel ultrasound-assisted derivatization followed by GC/MS analysis was developed for the quantification of oxygenated organic species in ambient aerosol. Derivatization parameters mostly influencing the analytical response were investigated, i.e., solvent type, reagent concentration, and reaction duration. Response surface methodology was used to design experiments and a quadratic model was utilized to predict the variables and establish the optimal conditions. The study was performed on standard solutions of 30 compounds representing the major classes of oxygenated compounds typically found in ambient aerosol, i...
May 18, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28513136/cold-chain-free-storable-hydrogel-for-infant-friendly-oral-delivery-of-amoxicillin-for-the-treatment-of-pneumococcal-pneumonia
#6
Keming Xu, Liang Li, Mingyue Cui, Yiyuan Han, Huseyin Enis Karahan, Vincent Tak Kwong Chow, Chenjie Xu
Pneumonia is the major cause of death in children under five, particularly in developing countries. Antibiotics such as amoxicillin greatly help in mitigating this problem. However, there is lack of an infant/toddler-friendly formulation for countries with limited clean water and electricity. Here we report the development of a shear-thinning hydrogel system for the oral delivery of amoxicillin to the infant/toddler patients, without the need of clean water and refrigeration. The hydrogel formulation consists of metolose (hydroxypropyl methylcellulose) and amoxicillin...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28501156/broadcasting-photonic-lab-on-a-chip-concept-through-a-low-cost-manufacturing-approach
#7
Isaac Rodríguez-Ruiz, Sébastien Teychené, Nhat Van Pham, Dimitri Radajewski, Fabrice Lamadie, Andreu Llobera, Sophie Charton
A low cost fabrication process for photonic lab on a chip systems is here proposed. For the implementation of the masters suitable for cast molding fabrication, an inexpensive dry film photoresist, patternable using standard laboratory equipment, is benchmarked against standardized SU-8 masters obtained using UV lithography and systems manufacture in clean room facilities. Results show adequate system fabrication and a comparable performance of the photonic structures for absorbance/extinction measurements.
August 1, 2017: Talanta
https://www.readbyqxmd.com/read/28500934/interactions-of-natural-resins-and-pigments-in-works-of-art
#8
Tommaso Poli, Anna Piccirillo, Marco Nervo, Oscar Chiantore
The degradation process involving the formation of metal soaps in drying oils is a well-known problem due to cations from pigments reacting with free fatty acids from the oil. The aggregation of these carboxylates in semi-crystalline structures can lead to eruptions through the paint layers and 'blooming' on the surface. In this work, the metal soaps formation in presence of natural resins has been assessed and studied by means of Fourier transform infrared spectroscopy with experiments concerning the ageing of drying oil and different natural resins (shellac, dammar and colophony) in the presence of common historic pigments (smalt, ochre, umber, azurite, lead white, zinc white and titanium white)...
May 2, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28498850/genome-wide-transcriptome-profiling-of-radish-raphanus-sativus-l-in-response-to-vernalization
#9
Chen Liu, Shufen Wang, Wenling Xu, Xianxian Liu
Vernalization is a key process for premature bolting. Although many studies on vernalization have been reported, the molecular mechanism of vernalization is still largely unknown in radish. In this study, we sequenced the transcriptomes of radish seedlings at three different time points during vernalization. More than 36 million clean reads were generated for each sample and the portions mapped to the reference genome were all above 67.0%. Our results show that the differentially expressed genes (DEGs) between room temperature and the early stage of vernalization (4,845) are the most in all treatments pairs...
2017: PloS One
https://www.readbyqxmd.com/read/28485472/relevance-of-the-main-postharvest-handling-operations-on-the-development-of-brown-rot-disease-on-stone-fruits
#10
M Bernat, J Segarra, C Casals, N Teixidó, R Torres, J Usall
BACKGROUND: Brown rot caused by Monilinia spp. is one of the most important postharvest diseases of stone fruit. The aim of this study was evaluate the relevance of the main postharvest operations of fruit; hydrocooling, cold room, water dump, sorting and cooling tunnel in the development of M. laxa on peaches and nectarines artificially infected 48, 24 or 2 hours before postharvest operations. RESULTS: Commercial hydrocooling operation reduced incidence to 10 % in 'Pp 100' nectarine inoculated 2 and 24 hours before this operation however in 'Fantasia' nectarine incidence was not reduced, although lesion diameter was decreased in all studied varieties...
May 9, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28475783/national-survey-of-practices-to-prevent-methicillin-resistant-staphylococcus-aureus-and-multidrug-resistant-acinetobacter-baumannii-in-thailand
#11
Anucha Apisarnthanarak, David Ratz, Thana Khawcharoenporn, Payal K Patel, David J Weber, Sanjay Saint, M Todd Greene
Background: We evaluated the extent to which hospital characteristics, infection control practices, and compliance with prevention bundles impacted multidrug-resistant organism (MDRO) infections in Thai hospitals. Methods: From 1 January 2014 to 30 November 2014, we surveyed all Thai hospitals with an intensive care unit and ≥250 beds. Infection control practices for methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Acinetobacter baumannii (MDR-AB) were assessed...
May 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28467526/centers-for-disease-control-and-prevention-guideline-for-the-prevention-of-surgical-site-infection-2017
#12
Sandra I Berríos-Torres, Craig A Umscheid, Dale W Bratzler, Brian Leas, Erin C Stone, Rachel R Kelz, Caroline E Reinke, Sherry Morgan, Joseph S Solomkin, John E Mazuski, E Patchen Dellinger, Kamal M F Itani, Elie F Berbari, John Segreti, Javad Parvizi, Joan Blanchard, George Allen, Jan A J W Kluytmans, Rodney Donlan, William P Schecter
Importance: The human and financial costs of treating surgical site infections (SSIs) are increasing. The number of surgical procedures performed in the United States continues to rise, and surgical patients are initially seen with increasingly complex comorbidities. It is estimated that approximately half of SSIs are deemed preventable using evidence-based strategies. Objective: To provide new and updated evidence-based recommendations for the prevention of SSI...
May 3, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28462761/a-multicenter-randomized-trial-to-determine-the-effect-of-an-environmental-disinfection-intervention-on-the-incidence-of-healthcare-associated-clostridium-difficile-infection
#13
Amy J Ray, Abhishek Deshpande, Dennis Fertelli, Brett M Sitzlar, Priyaleela Thota, Thriveen Sankar C, Annette L Jencson, Jennifer L Cadnum, Robert A Salata, Richard R Watkins, Ajay K Sethi, Philip C Carling, Brigid M Wilson, Curtis J Donskey
OBJECTIVE To determine the impact of an environmental disinfection intervention on the incidence of healthcare-associated Clostridium difficile infection (CDI). DESIGN A multicenter randomized trial. SETTING In total,16 acute-care hospitals in northeastern Ohio participated in the study. INTERVENTION We conducted a 12-month randomized trial to compare standard cleaning to enhanced cleaning that included monitoring of environmental services (EVS) personnel performance with feedback to EVS and infection control staff...
May 2, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28454501/carry-over-of-antineoplastic-drug-contamination-in-dutch-hospital-pharmacies
#14
M Crul, K Simons-Sanders
Background To prevent occupational exposure of hospital staff to cytostatics, a mandatory national guideline describing a set of safety measures was issued in the Netherlands in 2004. The guideline includes, among other directives, obligatory annual wipe testing to assess the efficacy of the local cleaning protocol. Full implementation of this guideline was executed in all Dutch hospital pharmacies over the next couple of years. Objective We aimed to investigate the effect of the national guideline on contamination levels, and specifically on the phenomenon of carry-over of traces of antineoplastic drugs through contact with surfaces, since this is a potential route of exposure...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28451227/covalent-triazine-framework-supported-non-noble-metal-nanoparticles-with-superior-activity-for-catalytic-hydrolysis-of-ammonia-borane-from-mechanistic-study-to-catalyst-design
#15
Zhao Li, Teng He, Lin Liu, Weidong Chen, Miao Zhang, Guotao Wu, Ping Chen
Development of non-noble metal catalysts with similar activity and stability to noble metals is of significant importance in the conversion and utilization of clean energy. The catalytic hydrolysis of ammonia borane (AB) to produce 3 equiv. of H2, as an example of where noble metal catalysts significantly outperform their non-noble peers, serves as an excellent test site for the design and optimization of non-noble metal catalysts. Our kinetic isotopic effect measurements reveal, for the first time, that the kinetic key step of the hydrolysis is the activation of H2O...
January 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28431849/prospective-cluster-controlled-crossover-trial-to-compare-the-impact-of-an-improved-hydrogen-peroxide-disinfectant-and-a-quaternary-ammonium-based-disinfectant-on-surface-contamination-and-health-care-outcomes
#16
John M Boyce, Kerri A Guercia, Linda Sullivan, Nancy L Havill, Renee Fekieta, Janet Kozakiewicz, David Goffman
BACKGROUND: Quaternary ammonium-based (Quat) disinfectants are widely used, but they have disadvantages. METHODS: This was a 12-month prospective cluster controlled crossover trial. On 4 wards, housekeepers performed daily cleaning using a disinfectant containing either 0.5% improved hydrogen peroxide (IHP) or Quat. Each month, 5-8 high-touch surfaces in several patient rooms on each ward were tagged with a fluorescent marker and cultured before and after cleaning...
April 18, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28395348/exposure-assessment-in-a-single-walled-carbon-nanotube-primary-manufacturer
#17
Serge Kouassi, Cyril Catto, Claude Ostiguy, Gilles L'Espérance, Jens Kroeger, Maximilien Debia
Objectives: This study was aimed at documenting and characterizing occupational exposure to single-walled carbon nanotubes (SWCNTs) generated in a primary manufacturing plant. It also compared various strategies of exposure monitoring. Methods: A 6-day measurement protocol was scheduled (D1-D6) including both (i) quasi-personal monitoring with an array of direct reading instruments (DRIs) and (ii) offline electron microscopy analyses of surface and breathing zone filter-based samples...
March 1, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28390200/comparative-plaque-removal-efficacy-of-three-manual-toothbrushes
#18
A Ghassemi, L Vorwerk, W Hooper, M Kwang, M Naji, C R Goyal, J Qaqish
OBJECTIVES: The purpose of this study was to determine the safety and plaque-reducing effectiveness of a newly designed manual toothbrush compared to that of a leading marketed toothbrush and a reference standard manual toothbrush control. METHODS: This examiner-blind, randomized, single-use study used a cross-over design. Sixty-eight qualifying male and female subjects were randomly assigned either an Arm & Hammer™ Truly Radiant™ Deep Clean manual toothbrush (TR), a Colgate® Extra Clean manual toothbrush (C), or an ADA reference standard manual toothbrush (SM) according to one of three computer-generated sequences...
September 2016: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/28387406/virus-directed-formation-of-electrocatalytically-active-nanoparticle-based-co3o4-tubes
#19
A S Schenk, S Eiben, M Goll, L Reith, A N Kulak, F C Meldrum, H Jeske, C Wege, S Ludwigs
Spinel-type Co3O4 finds applications in a wide range of fields, including clean energy conversion, where nanostructured Co3O4 may provide a cost-efficient alternative to platinum- and iridium-based catalysts for electrocatalytic water-splitting. We here describe a novel strategy in which basic cobalt carbonate - a precursor to Co3O4 - is precipitated as sheet-like structures and microspheres covered with fine surface protrusions, via ammonium carbonate decomposition at room temperature. Importantly, these mild reaction conditions enable us to employ bio-inspired templating approaches to further control the mineral structure...
May 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28380265/how-do-i-participate-in-t-cell-immunotherapy
#20
REVIEW
Megan M Suhoski Davis, David H McKenna, Philip J Norris
T cells play a key role in the adaptive immune response, and the ability to manipulate T cells for therapeutic uses has advanced in the past decade. Infusion of expanded or engineered T cells can potentially be used to treat cancer, viral infections, graft-versus-host disease, and organ transplant rejection. The role that blood banks play in the manufacture and distribution of T-cell therapeutics is still being defined. Given the regulatory framework of blood banks, they are well positioned to collect raw material for manufacture of T-cell therapies and to distribute finished product to hospitals in support of clinical trials or eventually for licensed products...
May 2017: Transfusion
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