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https://www.readbyqxmd.com/read/28328089/capacitive-dna-sensor-for-rapid-and-sensitive-detection-of-whole-genome-human-herpes-virus-1-dsdna-in-serum
#1
Cheng Cheng, Rania Oueslati, Jayne Wu, Jiangang Chen, Shigetoshi Eda
This work presents a rapid, highly sensitive, low-cost and specific capacitive DNA sensor for detection of whole genome human herpes virus-1 DNA. This sensor is capable of direct DNA detection with a response time of 30 seconds, and it can be used to test standard buffer or serum samples. The sensing approach for DNA detection is based on AC electrokinetics. By applying an inhomogeneous AC electric field on sensor electrodes, positive dielectrophoresis is induced to accelerate DNA hybridization. The same applied AC signal also directly measures the hybridization of target with the probe on the sensor surface...
March 22, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28327239/mating-motives-are-neither-necessary-nor-sufficient-to-create-the-beauty-premium
#2
Sebastian Hafenbrädl, Jason Dana
Mating motives lead decision makers to favor attractive people, but this favoritism is not sufficient to create a beauty premium in competitive settings. Further, economic approaches to discrimination, when correctly characterized, could neatly accommodate the experimental and field evidence of a beauty premium. Connecting labor economics and evolutionary psychology is laudable, but mating motives do not explain the beauty premium.
January 2017: Behavioral and Brain Sciences
https://www.readbyqxmd.com/read/28325351/flexible-fiber-optic-high-speed-imaging-of-vocal-fold-vibration-a-preliminary-report
#3
Peak Woo, Peter Baxter
OBJECTIVE: High-speed video (HSV) imaging of vocal fold vibration has been possible only through the rigid endoscope. This study reports that a fiberscope-based high-speed imaging system may allow HSV imaging of naturalistic voicing. MATERIALS AND METHODS: Twenty-two subjects were recorded using a commercially available black and white high-speed camera (Photron Motion Tools, 256 × 120 pixel, 2000 frames per second, 8 second acquisition time). The camera gain is set to +6 db...
March 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28325346/morphology-crystallization-and-rheological-behavior-in-poly-butylene-succinate-cellulose-nanocrystal-nanocomposites-fabricated-by-solution-coagulation
#4
Yi-Dong Li, Qian-Qian Fu, Ming Wang, Jian-Bing Zeng
Nanocomposites consisting of poly(butylene succinate) (PBS) and cellulose nanocrystals (CNC) were fabricated by solution coagulation method. Morphology analysis indicated that CNC dispersed well in PBS matrix and rheological analysis suggested that PBS and CNC showed strong interactions. Thermal analysis indicated that the nanocomposites showed slightly increased glass transition temperature, significantly enhanced crystallization temperature and different melting behavior, compared to neat PBS. Study on crystallization indicated that small loading of CNC could significantly increase overall crystallization rate of PBS, meanwhile the crystallization mechanism and crystal structure remained unchanged...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28325316/removal-of-dye-by-carboxymethyl-cellulose-acrylamide-and-graphene-oxide-via-a-free-radical-polymerization-process
#5
Kokkarachedu Varaprasad, Tippabattini Jayaramudu, Emmanuel Rotimi Sadiku
Carboxymethyl cellulose has been used for the design of novel engineered hydrogels in order to obtain effective three-dimensional structures for industrial applications. In this work, dye removal carboxymethyl cellulose-acrylamide-graphene oxide (CMC-AM-GO) hydrogels were prepared by a free-radical polymerization method. The GO was developed by the modified Hummers method. The CMC-AM-GO and GO were characterized by FTIR, XRD and SEM. The swelling and swelling kinetics were calculated using gravimetric process...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28323317/the-health-insurance-gap-after-implementation-of-the-affordable-care-act-in-texas
#6
Gordon Gong, Cassandra C Huey, Coleman Johnson, Debra Curti, Billy U Philips
Households with incomes between 18% and 99% of the federal poverty level (FPL) are ineligible for Medicaid or enrollment in the health insurance exchange marketplace in Texas, resulting in the health insurance gap. We sought to determine the number of non-elderly adult Texans (NEATs) aged between 18 and 64 years in the insurance gap in rural vs urban areas in East Texas, West Texas, and South Texas. Data were obtained from the US Census Bureau website. In 2014, there were 1,101,000 NEATs in the insurance gap, accounting for 24...
March 1, 2017: Texas Medicine
https://www.readbyqxmd.com/read/28322953/recycling-of-poly-lactic-acid-silk-based-bionanocomposites-films-and-its-influence-on-thermal-stability-crystallization-kinetics-solution-and-melt-rheology
#7
Melakuu Tesfaye, Rahul Patwa, Arvind Gupta, Manash Jyoti Kashyap, Vimal Katiyar
In this study, the effect of silk nanocrystals (SNCs) on the thermal and rheological properties of poly (lactic acid) (PLA) under repetitive extrusion process is investigated. The presence of SNCs facilitates the crystallization process and delaying the thermal degradation of PLA matrix. This leads to the reduction in cold crystallization peak temperature with lower crystallization half-time and higher growth rate. The substantial improvement in nucleation density observed through Polarized Optical Microscope (POM) proves the nucleating effect of SNC in all processing cycles...
March 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28322943/cu-ii-binded-chitosan-fe3o4-nanocomomposite-as-a-new-biosorbent-for-efficient-and-selective-removal-of-phosphate
#8
Siamak Zavareh, Zahra Behrouzi, Armen Avanes
The aim of this study was to develop a chitosan-based magnetic adsorbent for selective and effective removal of phosphate from aqueous solutions. For this purpose, Cu-chitosan/Fe3O4 nanocomposite was prepared using a facile method and characterized. The prepared adsorbent exhibited more porous surface with higher specific area compared to neat chitosan based on SEM and BET studies. The FTIR and EDX studies indicated the presence of Cu(II) bonded to the adsorbent surface. Crystalline properties of the adsorbent were also studied using XRD...
March 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28322396/cationic-rhenium-iii-complexes-synthesis-characterization-and-reactivity-for-hydrosilylation-of-aldehydes
#9
Damaris E Pérez, Jessica L Smeltz, Roger D Sommer, Paul D Boyle, Elon A Ison
A series of novel cationic Re(iii) complexes [(DAAm)Re(CO)(NCCH3)2][X] [DAAm = N,N-bis(2-arylaminoethyl)methylamine; aryl = C6F5 (a), Mes (b)] [X = OTf (2), BAr(F)4 [BAr(F)4 = tetrakis[3,5-(trifluoromethyl)phenyl]borate] (3), BF4 (4), PF6 (5)], and their analogue [(DAmA)Re(CO)(Cl)2] [DAmA = N,N-bis(2-arylamineethyl)methylamino; aryl = C6F5] (6) were synthesized. The catalytic efficiency for the hydrosilylation reaction of aldehydes using 4a (0.03 mol%) has been demonstrated to be significantly more active than rhenium catalysts previously reported in the literature...
March 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28319660/novel-mof-uio-66-layer-a-highly-oriented-membrane-with-good-selectivity-and-hydrogen-permeance
#10
Sebastian Friebe, Benjamin Geppert, Frank Steinbach, Jürgen Caro
The 3D MOF structure UiO-66 [Zr6O4(OH)4(bdc)6], featuring triangular pores of approximately 6 Å, has been successfully prepared as thin supported membrane layer with high crystallographic orientation on ceramic α-Al2O3 supports. The adhesion of the MOF layer to the ceramic support was investigated in different taxing conditions. Furthermore, by coating this UiO-66 membrane with a thin polyimide (Matrimid) top layer we prepared a multilayer composite. Said membranes have been evaluated in the separation of hydrogen (H2) from different binary mixtures at room temperature...
March 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28319362/tuning-the-work-function-of-printed-polymer-electrodes-by-introducing-a-fluorinated-polymer-to-enhance-the-operational-stability-in-bottom-contact-organic-field-effect-transistors
#11
Se Hyun Kim, Jiye Kim, Sooji Nam, Hwa Sung Lee, Seung Woo Lee, Jaeyoung Jang
Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) is a promising electrode material for organic electronic devices due to its high conductivity, good mechanical flexibility, and feasibility of easy patterning with various printing methods. The work function of PEDOT:PSS needs to be increased for efficient hole injection and the addition of a fluorine-containing material has been reported to increase the work function of PEDOT:PSS. However, it remains a challenge to print PEDOT:PSS electrodes while simultaneously tuning their work functions...
March 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28315815/self-assembled-photoadditives-in-polyester-films-allow-stop-and-go-chemical-release
#12
Ting Cheng, Richard O'Rorke, Raphael Francois Ortiz, Tay Yee Yan, Eva Hemmer, Fiorenzo Vetrone, Robert S Marks, Terry W J Steele
Near-infrared (NIR) triggered chemical delivery allows on-demand release with the advantage of external tissue stimulation. Bioresorbable polyester poly-L-lactic acid (PLLA) was compounded with photoadditives of neat zinc oxide (ZnO) nanoparticles and 980 → 365 nm LiYF4:Tm(3+), Yb(3+) upconverting nanoparticles (UCNP). Subsequently, neat ZnO and UCNP blended PLLA films of sub-50 μm thickness were knife casted with a hydrophobic small molecule drug mimic, fluorescein diacetate. The PLLA films displayed a 500 times increase in fluorescein diacetate release from the 50 mW NIR irradiated PLLA/photoadditive film compared to non-irradiated PLLA control films...
March 15, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28302541/trends-on-analytical-characterization-of-polysorbates-and-their-degradation-products-in-biopharmaceutical-formulations
#13
REVIEW
Ariadna Martos, Wendelin Koch, Wim Jiskoot, Klaus Wuchner, Gerhard Winter, Wolfgang Friess, Andrea Hawe
Among many other applications, polysorbates (PS) are used as the most common surfactants in biopharmaceutical products in particular to protect proteins against interfacial stress. Structural heterogeneity, presence of degradants and other impurities, and tendency for degradation are interrelated features found in commercial PS with a direct impact on their functional properties in biopharmaceutical products. These pose a challenge for the analytical characterization of PS at different stages of product development...
March 13, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28302359/footprint-weathering-and-persistence-of-synthetic-base-drilling-mud-olefins-in-deep-sea-sediments-following-the-deepwater-horizon-disaster
#14
Scott A Stout, James R Payne
Olefin-based synthetic-based drilling mud (SBM) was released into the Gulf of Mexico as a result of the Deepwater Horizon (DWH) disaster in 2010. We studied the composition of neat SBM and, using conventional GC-FID, the extent, concentration, and chemical character of SBM-derived olefins in >3600 seafloor sediments collected in 2010/2011 and 2014. SBM-derived (C14-C20) olefins occurred (up to 10cm deep) within a 6.5km(2) "footprint" around the well. The olefin concentration in most sediments decreased an order of magnitude between 2010/2011 and 2014, at least in part due to biodegradation, evidenced by the preferential loss C16 and C18 linear (α- and internal) versus branched olefins...
March 13, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28300570/idiopathic-interstitial-pneumonia-associated-with-autoantibodies-a-large-case-series-followed-over-one-year
#15
Bridget F Collins, Charles F Spiekerman, Megan A Shaw, Lawrence A Ho, Jennifer Hayes, Carolyn A Spada, Caroline M Stamato, Ganesh Raghu
BACKGROUND: Some patients with autoimmune characteristics and idiopathic interstitial pneumonia (IIP), particularly usual interstitial pneumonia (UIP), do not fit neatly into the category of connective tissue disease associated interstitial lung disease (CTD-ILD), idiopathic pulmonary fibrosis (IPF) or recently proposed yet to be validated criteria for interstitial pneumonia with autoimmune features (IPAF). Outcomes of these patients are unknown. METHODS: Retrospective single center study; ANOVA analyses compared differences in mean change in forced vital capacity (FVC) and diffusion capacity (DLCO) over 1-year among 124 well defined patients (20 AI-ILD [positive autoantibodies with or without symptoms of CTD], 15 IPAF, 36 CTD-ILD, 53 "Lone-IPF" [patients with IPF without any autoantibodies]) RESULTS: 75% of patients with AI-ILD, 33% IPAF, and 33% CTD-ILD had UIP...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28298100/local-environment-structure-and-dynamics-of-co2-in-the-1-ethyl-3-methylimidazolium-bis-trifluoromethanesulfonyl-imide-and-related-ionic-liquids
#16
Tuanan C Lourenço, Santiago Aparicio, Gabriela C Costa, Luciano T Costa
Despite the innumerous papers regarding the study of the ionic liquids as a potential candidate for CO2 capture, many details concerning the structure and dynamics of CO2 in the system are still to be revealed, i.e., the correlation between the local environment structure and the dynamic properties of the substance. This present work relied on the performance of molecular dynamics both for the neat [C2mim][Tf2N] and [C2mim][Tf2N]/CO2 mixtures in an attempt to elucidate the local environment of CO2 and their effects on the dynamic properties of [C2mim][Tf2N]...
March 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28294279/smart-wearable-kevlar-based-safeguarding-electronic-textile-with-excellent-sensing-performance
#17
Sheng Wang, Shouhu Xuan, Mei Liu, Linfeng Bai, Shuaishuai Zhang, Min Sang, Wanquan Jiang, Xinglong Gong
A novel S-ST/MWCNT/Kevlar-based wearable electronic textile (WET) with enhanced safeguarding performance and force sensing ability was fabricated. Stab resistance performance tests under quasi-static and dynamic conditions show that the maximum resistance force and penetration impact energy for the WET are 18 N and 11.76 J, which represent a 90% and 50% increment with respect to the neat Kevlar, respectively. Dynamic impact resistance tests show that the WET absorbs all the impact energy. The maximum resistance force of the WET is 1052 N, which represents an improvement of about 190% with respect to neat Kevlar...
March 15, 2017: Soft Matter
https://www.readbyqxmd.com/read/28292727/analysis-of-dna-from-post-blast-pipe-bomb-fragments-for-identification-and-determination-of-ancestry
#18
Esiri Tasker, Bobby LaRue, Charity Beherec, David Gangitano, Sheree Hughes-Stamm
Improvised explosive devices (IEDs) such as pipe bombs are weapons used to detrimentally affect people and communities. A readily accessible brand of exploding targets called Tannerite® has been identified as a potential material for abuse as an explosive in pipe bombs. The ability to recover and genotype DNA from such weapons may be vital in the effort to identify suspects associated with these devices. While it is possible to recover DNA from post-blast fragments using short tandem repeat markers (STRs), genotyping success can be negatively affected by low quantities of DNA, degradation, and/or PCR inhibitors...
March 1, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28281332/tightly-bound-double-caged-60-fullerene-derivatives-with-enhanced-solubility-structural-features-and-application-in-solar-cells
#19
Victor A Brotsman, Vitaliy A Ioutsi, Alexey V Rybalchenko, Vitaliy Yu Markov, Nikita M Belov, Natalia S Lukonina, Sergey I Troyanov, Ilya N Ioffe, Vasiliy A Trukhanov, Galina K Galimova, Artur A Mannanov, Dmitry N Zubov, Erhard Kemnitz, Lev N Sidorov, Tatiana V Magdesieva, Dmitry Yu Paraschuk, Alexey A Goryunkov
A series of novel highly soluble double-caged [60]fullerene derivatives were prepared by means of lithium salt-assisted [2+3]-cycloaddition. The bispheric molecules feature rigid linking of the fullerene spheres via a four-membered cycle and a pyrrolizidine bridge with an ester function CO2R (R=n-decyl, n-octadecyl, benzyl, and n-butyl: compounds 1a-d, respectively), as demonstrated by NMR spectroscopy and X-ray diffraction. Cyclic voltammetry studies revealed three closely overlapping pairs of reversible peaks due to consecutive one-electron reductions of fullerene cages, as well as an irreversible oxidation peak attributed to abstraction of an electron from the nitrogen lone electron pair...
March 9, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28275768/how-water-manifests-the-structural-regimes-in-ionic-liquids
#20
Akhil Pratap Singh, Ramesh L Gardas, Sanjib Senapati
Ionic liquids (ILs) are being considered as greener alternatives to the conventional organic solvents. However, highly viscous nature of ILs often limits their applications. Hence studies on IL/water binary mixtures have received tremendous attention. These mixtures exhibit much lower viscosity, but almost similar density, compressibility and other properties as that of the neat ILs, up to certain water content. Hence, determining the IL-water ratio till which the solution behaves like IL and subsequently changes to a state of solute IL dissolved in continuous water phase is of paramount importance...
March 9, 2017: Soft Matter
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