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https://www.readbyqxmd.com/read/28538093/toxic-byproduct-formation-during-electrochemical-treatment-of-latrine-wastewater
#1
Justin T Jasper, Yang Yang, Michael R Hoffmann
Electrochemical systems are an attractive option for onsite latrine wastewater treatment due to their high efficiency and small footprint. While concerns remain over formation of toxic byproducts during treatment, rigorous studies examining byproduct formation are lacking. Experiments treating authentic latrine wastewater over variable treatment times, current densities, chloride concentrations, and anode materials were conducted to characterize byproducts and identify conditions that minimize their formation...
May 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28538005/a-survey-examining-photopatch-test-and-phototest-methodologies-of-contact-dermatologists-in-the-united-states-platform-for-the-development-of-a-consensus
#2
Eseosa Asemota, Glen Crawford, Carrie Kovarik, Bruce A Brod
BACKGROUND: There is currently no standardized protocol for photopatch testing and phototesting in the United States. Certain testing paramaters (such as chemicals tested, time between test application and irradiation, and time of final interpretation) vary from provider to provider. These variations may impact comparability and consistency of test results. OBJECTIVE: The goal of our survey-based study was to outline the photopatch test and phototest protocols used by US contact dermatologists...
May 23, 2017: Dermatitis
https://www.readbyqxmd.com/read/28537806/analytic-and-clinical-validation-of-an-ultrasensitive-quantitative-polymerase-chain-reaction-assay-for-egfr-mutation-analysis-with-circulating-tumor-dna
#3
Xiaowei Wang, Yunhua Gao, Bei Wang, Zhenrong Zhang, Chaoyang Liang, Hongxiang Feng, Yongqing Guo, Jiping Da, Minli Mo, Mengyun Zhang, Feng Ding, Zhao Chen, Hui Li, Deruo Liu
CONTEXT: - The mutation analysis of epidermal growth factor receptor (EGFR) has become a common test to guide therapeutic decision making for lung cancer. Molecular testing with circulating tumor DNA in plasma allows diagnosis of mutations when tumor tissue is not available as well as monitoring treatment response with repeat biopsies. OBJECTIVES: - To develop a timely and cost-effective assay that can accurately detect EGFR mutations in circulating tumor DNA and to evaluate the analytic and clinical performance of the assay...
May 24, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28537773/a-new-generation-of-comfort-care-order-sets-aligning-protocols-with-current-principles
#4
Melissa A Bender, Caroline Hurd, Nicole Solvang, Kathy Colagrossi, Diane Matsuwaka, J Randall Curtis
BACKGROUND: There are few published comfort care order sets for end-of-life symptom management, contributing to variability in treatment of common symptoms. At our academic medical centers, we have observed that rapid titration of opioid infusions using our original comfort care order set's titration algorithm causes increased discomfort from opioid toxicity. OBJECTIVE: The aim of this study was to describe the process and outcomes of a multiyear revision of a standardized comfort care order set for clinicians to treat end-of-life symptoms in hospitalized patients...
May 24, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28535471/graphene-oxide-supported-carbon-nanofiber-like-network-derived-from-polyaniline-a-novel-composite-for-enhanced-glucose-oxidase-bioelectrode-performance
#5
Zepeng Kang, Kailong Jiao, Xinping Xu, Ruiyun Peng, Shuqiang Jiao, Zongqian Hu
A three-dimensional architecture of PANI@GO hybrid was synthesized via in-situ polymerization of aniline monomers on the surface of graphene oxide (GO) and carbonized at 1600°C. The SEM images showed that surfaces of planar GO were covered by a compact nanofiber-like polyaniline (PANI) layer which presented an interconnected network. Nanofiber-like PANI on the GO surface was mostly preserved and became the carbon nanofibers (CNFs) after carbonization. The TEM images showed that the carbonized PANI grew seamlessly on the GO surface and served as conductive "network" between interlayers of GO...
May 12, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28535356/one-dimensional-carrier-confinement-in-giant-cds-cdse-excitonic-nanoshells
#6
Natalia Razgoniaeva, Pavel Moroz, Mingrui Yang, Darya S Budkina, Holly Eckard, Marissa Augspurger, Dmitriy Khon, Alexander N Tarnovsky, Mikhail Zamkov
The emerging generation of quantum dot optoelectronic devices offers an appealing prospect of a size-tunable band gap. The confinement-enabled control over electronic properties, however, requires nanoparticles to be sufficiently small, which leads to a large area of inter-particle boundaries in a film. Such interfaces lead to a high density of surface traps which ultimately increase the electrical resistance of a solid. To address this issue, we have developed an inverse energy-gradient core/shell architecture supporting the quantum confinement in nanoparticles larger than the exciton Bohr radius...
May 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28535151/correlations-of-hemoglobin-level-and-perioperative-blood-transfusion-with-the-prognosis-of-gastric-cancer-a-retrospective-study
#7
Gang Wu, Dai-Yang Zhang, Yu-Han Duan, Ying-Qiong Zhang, Xian-Nian Cui, Zheng Luo
BACKGROUND This study was designed to explore the correlations of hemoglobin level (Hb) and perioperative blood transfusion with the prognosis of gastric cancer (GC). MATERIAL AND METHODS Our study consisted of 210 patients with GC who all received a D2 radical operation. These patients were assigned into three groups: 68 cases in group A (blood transfusion >5 U); 59 cases in group B (blood transfusion <5 U); 83 cases in group C (without blood transfusion). A 5-year follow-up was conducted to evaluate the disease-free survival of the patients...
May 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28535028/preparation-of-highly-thermally-conductive-polymer-composite-at-low-filler-content-via-a-self-assembly-process-between-polystyrene-microsphere-and-boron-nitride-nanosheet
#8
Xiongwei Wang, Peiyi Wu
Rational distribution and orientation of boron nitride nanosheets (BNNSs) are very significant for a polymer/BNNS composite to obtain a high thermal conductivity at low filler content. In this paper, a high-performance thermal interface material based on exfoliated BNNSs and polystyrene microspheres was fabricated by latex blending and subsequent compression molding. In this case, BNNSs and polystyrene (PS) microspheres would firstly self-asemble to form the complex microspheres via strong electrostatic interactions between them...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534904/porous-copper-graphene-heterostructures-for-cooling-of-electronic-devices
#9
Hokyun Rho, Yea Sol Jang, Sungmin Kim, Sukang Bae, Tae-Wook Kim, Dong Su Lee, Jun-Seok Ha, Sang Hyun Lee
Recently, research on micro-electronic and optoelectronic devices has been rapidly increasing. Parts and products related to these devices are becoming smaller and more integrated within circuits. As a result, the heat generated in devices has increased greatly. When excess heat is generated, important properties are affected such as efficiency and lifetime and, in severe cases, this can result in the failure of devices. Therefore, efficient cooling is required and it becomes necessary to study the heat dissipation properties of device materials...
May 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28534436/perceptions-of-sport-science-students-on-the-potential-applications-and-limitations-of-blended-learning-in-their-education-a-qualitative-study
#10
Justin W L Keogh, Lisa Gowthorp, Michelle McLean
This study sought to gain insight into blended learning-naive sports science students' understanding and perceptions of the potential benefits and limitations of blended (hybrid) learning, which has been defined as the thoughtful integration of face-to-face and online instructional approaches. Five focus groups, each comprising 3-4 students from either the undergraduate or postgraduate sports science programmes were conducted. The focus groups were facilitated by a researcher who was not involved in sports science...
May 23, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28534410/a-facile-methodology-for-the-development-of-printable-and-flexible-all-solid-state-rechargeable-battery
#11
Bibekananda De, Amit Yadav, Salman Khan, Kamal K Kar
Development of the printable and flexible energy storage device is one of the most promising technologies for wearable electronics in textile industry. The present work design a printable and flexible all solid state rechargeable battery for wearable electronic in textile application. Copper coated carbon fiber is used to make polyethylene oxide (PEO) based polymer nanocomposite for flexible and conductive current collector layer. Lithium iron phosphate (LiFePO4) and titanium dioxide (TiO2) are utilized to prepare cathode and anode layer, respectively with PEO and carbon black composites...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534399/self-assembly-of-organic-ferroelectrics-by-evaporative-dewetting-a-case-of-%C3%AE-glycine
#12
Ensieh Seyedhosseini, Konstantin Romanyuk, Daria Vasileva, Semen Vasilev, Alla Nuraeva, Pavel Zelenovskiy, Maxim S Ivanov, Anna N Morozovska, Vladimir Ya Shur, Haidong Lu, Alexei Gruverman, Andrei Leonidovitch Kholkin
Self-assembly of ferroelectric materials attracts significant interest because it offers a promising fabrication route to novel structures useful for microelectronic devices such as non-volatile memories, integrated sensors/actuators, or energy harvesters. In this work, we demonstrate a novel approach for self-assembly of organic ferroelectrics (as exemplified by ferroelectric β-glycine) using evaporative dewetting, which allows forming quasi-regular arrays of nano- and microislands with preferred orientation of polarization axes...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534055/experimental-determination-of-surface-heat-transfer-coefficient-in-a-dry-ice-ethanol-cooling-bath-using-a-numerical-approach
#13
M V Santos, M Sansinena, N Zaritzky, J Chirife
  BACKGROUND: Dry ice-ethanol bath (-78 degree C) have been widely used in low temperature biological research to attain rapid cooling of samples below freezing temperature. The prediction of cooling rates of biological samples immersed in dry ice-ethanol bath is of practical interest in cryopreservation. The cooling rate can be obtained using mathematical models representing the heat conduction equation in transient state. Additionally, at the solid cryogenic-fluid interface, the knowledge of the surface heat transfer coefficient (h) is necessary for the convective boundary condition in order to correctly establish the mathematical problem...
March 2017: Cryo Letters
https://www.readbyqxmd.com/read/28533377/engineering-cu-surfaces-for-the-electrocatalytic-conversion-of-co2-controlling-selectivity-toward-oxygenates-and-hydrocarbons
#14
Christopher Hahn, Toru Hatsukade, Youn-Geun Kim, Arturas Vailionis, Jack H Baricuatro, Drew C Higgins, Stephanie A Nitopi, Manuel P Soriaga, Thomas F Jaramillo
In this study we control the surface structure of Cu thin-film catalysts to probe the relationship between active sites and catalytic activity for the electroreduction of CO2 to fuels and chemicals. Here, we report physical vapor deposition of Cu thin films on large-format (∼6 cm(2)) single-crystal substrates, and confirm epitaxial growth in the <100>, <111>, and <751> orientations using X-ray pole figures. To understand the relationship between the bulk and surface structures, in situ electrochemical scanning tunneling microscopy was conducted on Cu(100), (111), and (751) thin films...
May 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28532901/long-term-surveillance-of-zinc-implant-in-murine-artery-surprisingly-steady-biocorrosion-rate
#15
Adam Drelich, Shan Zhao, Roger J Guillory, Jaroslaw W Drelich, Jeremy Goldman
Metallic zinc implanted into the abdominal aorta of rats out to 6 months has been demonstrated to degrade while avoiding responses commonly associated with the restenosis of vascular implants. However, major questions remain regarding whether a zinc implant would ultimately passivate through the production of stable corrosion products or via a cell mediated fibrous encapsulation process that prevents the diffusion of critical reactants and products at the metal surface. Here, we have conducted clinically relevant long term in vivo studies in order to characterize late stage zinc implant biocorrosion behavior and products to address these critical questions...
May 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28532511/challenges-and-strategies-for-implementing-genomic-services-in-diverse-settings-experiences-from-the-implementing-genomics-in-practice-ignite-network
#16
Nina R Sperber, Janet S Carpenter, Larisa H Cavallari, Laura J Damschroder, Rhonda M Cooper-DeHoff, Joshua C Denny, Geoffrey S Ginsburg, Yue Guan, Carol R Horowitz, Kenneth D Levy, Mia A Levy, Ebony B Madden, Michael E Matheny, Toni I Pollin, Victoria M Pratt, Marc Rosenman, Corrine I Voils, Kristen W Weitzel, Russell A Wilke, R Ryanne Wu, Lori A Orlando
BACKGROUND: To realize potential public health benefits from genetic and genomic innovations, understanding how best to implement the innovations into clinical care is important. The objective of this study was to synthesize data on challenges identified by six diverse projects that are part of a National Human Genome Research Institute (NHGRI)-funded network focused on implementing genomics into practice and strategies to overcome these challenges. METHODS: We used a multiple-case study approach with each project considered as a case and qualitative methods to elicit and describe themes related to implementation challenges and strategies...
May 22, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28532148/gluten-free-sources-of-fermentable-extract-effect-of-temperature-and-germination-time-on-quality-attributes-of-teff-eragrostis-tef-zucc-trotter-malt-and-wort
#17
Lidia Di Ghionno, Eung Gwan Lee, Ombretta Marconi, Christopher J Rice, Valeria Sileoni, Giuseppe Perretti
This study was conducted to evaluate the behavior of a white teff variety called Witkop during malting by using different parameters (germination temperature and duration) and to identify the best malting program. Samples were evaluated for standard quality malt and wort attributes, pasting characteristics, β-glucan and arabinoxylan content and sugar profile. It was concluded that malting teff at 24°C for 6 days produced acceptable malt in terms of quality attributes and sugar profile for brewing. The main attributes were: 80...
May 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28532128/band-offset-measurements-in-atomic-layer-deposited-al2o3-zn0-8al0-2o-heterojunction-studied-by-x-ray-photoelectron-spectroscopy
#18
Baojun Yan, Shulin Liu, Yuekun Heng, Yuzhen Yang, Yang Yu, Kaile Wen
Pure aluminum oxide (Al2O3) and zinc aluminum oxide (Zn x Al1-x O) thin films were deposited by atomic layer deposition (ALD). The microstructure and optical band gaps (E g ) of the Zn x Al1-x O (0.2 ≤ x ≤ 1) films were studied by X-ray diffractometer and Tauc method. The band offsets and alignment of atomic-layer-deposited Al2O3/Zn0.8Al0.2O heterojunction were investigated in detail using charge-corrected X-ray photoelectron spectroscopy. In this work, different methodologies were adopted to recover the actual position of the core levels in insulator materials which were easily affected by differential charging phenomena...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28532065/in-vitro-performance-of-ag-incorporated-hydroxyapatite-and-its-adhesive-porous-coatings-deposited-by-electrostatic-spraying
#19
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/28532049/co-delivery-of-cisplatin-and-doxorubicin-from-calcium-phosphate-beads-matrix-scaffolds-for-osteosarcoma-therapy
#20
Ulrike Hess, Shakiba Shahabi, Laura Treccani, Philipp Streckbein, Christian Heiss, Kurosch Rezwan
Bone substitute materials with a controlled drug release ability can fill cavities caused by the resection of bone tumours and thereby combat any leftover bone cancer cells. The combined release of different cytostatics seems to enhance their toxicity. In this study, calcium phosphate beads and matrix scaffolds are combined for a long-term co-delivery of cis-diamminedichloroplatinum (cisplatin, CDDP) and doxorubicin hydrochloride (DOX) as clinical relevant model drugs. Tricalcium phosphate/alginate beads as additional drug carrier are produced by droplet extrusion with ionotropic gelation and incorporated in scaffold matrix by freeze gelation without sintering...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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