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https://www.readbyqxmd.com/read/28214748/electrochemical-monitoring-of-biointeraction-by-graphene-based-material-modified-pencil-graphite-electrode
#1
Ece Eksin, Erhan Zor, Arzum Erdem, Haluk Bingol
Recently, the low-cost effective biosensing systems based on advanced nanomaterials have received a key attention for development of novel assays for rapid and sequence-specific nucleic acid detection. The electrochemical biosensor based on reduced graphene oxide (rGO) modified disposable pencil graphite electrodes (PGEs) were developed herein for electrochemical monitoring of DNA, and also for monitoring of biointeraction occurred between anticancer drug, Daunorubicin (DNR), and DNA. First, rGO was synthesized chemically and characterized by using UV-Vis, TGA, FT-IR, Raman Spectroscopy and SEM techniques...
February 11, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28214121/a-molecular-zoom-into-soil-humeome-by-a-direct-sequential-chemical-fractionation-of-soil
#2
Marios Drosos, Antonio Nebbioso, Pierluigi Mazzei, Giovanni Vinci, Riccardo Spaccini, Alessandro Piccolo
A Humeomics sequential chemical fractionation coupled to advanced analytical identification was applied directly to soil for the first time. Humeomics extracted ~235% more soil organic carbon (SOC) than by the total alkaline extraction traditionally employed to solubilise soil humic molecules (soil Humeome). Seven fractions of either hydro- or organo-soluble components and a final unextractable humic residue were separated from soil. These materials enabled an unprecedented structural identification of solubilised heterogeneous humic molecules by combining NMR, GC-MS, and ESI-Orbitrap-MS...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28213818/acceptability-of-an-internet-cognitive-behavioural-therapy-program-for-people-with-early-stage-cancer-and-cancer-survivors-with-depression-and-or-anxiety-thematic-findings-from-focus-groups
#3
A Karageorge, M J Murphy, J M Newby, L Kirsten, G Andrews, K Allison, S Loughnan, M Price, J Shaw, H Shepherd, J Smith, P Butow
PURPOSE: We developed an eight-lesson internet-delivered CBT (iCBT) program targeting anxiety and depression in early-stage cancer and cancer survivors. To explore the acceptability of the program, we showed volunteers the first two lessons and asked for their views. METHODS: Focus groups (n = 3) and individual interviews (n = 5) were undertaken with 15 participants (11 survivors) with mainly breast (11 of the 15) cancer, who had reviewed intervention materials...
February 18, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28213799/the-hybrid-technique-of-pelvic-organ-prolapse-treatment-apical-sling-and-subfascial-colporrhaphy
#4
Dmitry Shkarupa, Nikita Kubin, Alexey Pisarev, Anastasiya Zaytseva, Ekaterina Shapovalova
INTRODUCTION AND HYPOTHESIS: The majority of patients with cystocele undergoing reconstructive surgery have combined defects of pubocervical fascia and uterosacral/cardinal ligament complex. In this regard, the simultaneous correction of both defects is rational. Furthermore, decreasing the use of synthetic materials in pelvic floor surgery is an important goal. The aim was to evaluate the objective and subjective cure rate of a hybrid technique: bilateral sacrospinous fixation using modern monofilament synthetic tape (apical sling) combined with the original technique of subfascial colporrhaphy...
February 17, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28213214/bifunctional-polydopamine-thin-film-coated-zinc-oxide-nanorods-for-label-free-photoelectrochemical-immunoassay
#5
Yan Yang, Weihua Hu
Photoelectrochemical (PEC) detection is a promising method for label-free immunoassay by reporting the specific biological recognition events with electrical signals. However, it is challenging to rationally incorporate immunosensing components with a photocurrent conversion interface, which generally necessitates multistep fabrication and careful tailoring of various components such as photoactive material and biological probe. For high detection reliability and reproducibility, it is highly desirable to rationally construct an efficient PEC interface with architecture as simple as possible...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213153/critical-thinking-instruction-and-technology-enhanced-learning-from-the-student-perspective-a-mixed-methods-research-study
#6
Ruth Swart
Critical thinking is acclaimed as a valuable asset for graduates from higher education programs. Technology has advanced in quantity and quality; recognized as a requirement of 21st century learners. A mixed methods research study was undertaken, examining undergraduate nursing student engagement with critical thinking instruction, platformed on two technology-enhanced learning environments: a classroom response system face-to-face in-class and an online discussion forum out-of-class. The Community of Inquiry framed the study capturing constructivist collaborative inquiry to support learning, and facilitate critical thinking capability...
February 4, 2017: Nurse Education in Practice
https://www.readbyqxmd.com/read/28212175/advances-in-epilepsy-gene-discovery-and-implications-for-epilepsy-diagnosis-and-treatment
#7
Joseph D Symonds, Sameer M Zuberi, Michael R Johnson
PURPOSE OF REVIEW: Epilepsy genetics is shifting from the academic pursuit of gene discovery to a clinical discipline based on molecular diagnosis and stratified medicine. We consider the latest developments in epilepsy genetics and review how gene discovery in epilepsy is influencing the clinical classification of epilepsy and informing new therapeutic approaches and drug discovery. RECENT FINDINGS: Recent studies highlighting the importance of mutation in GABA receptors, NMDA receptors, potassium channels, G-protein coupled receptors, mammalian target of rapamycin pathway and chromatin remodeling are discussed...
February 15, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28212109/sustainable-exposure-prevention-through-innovative-detection-and-remediation-technologies-from-the-niehs-superfund-research-program
#8
Heather F Henry, William A Suk
Innovative devices and tools for exposure assessment and remediation play an integral role in preventing exposure to hazardous substances. New solutions for detecting and remediating organic, inorganic, and mixtures of contaminants can improve public health as a means of primary prevention. Using a public health prevention model, detection and remediation technologies contribute to primary prevention as tools to identify areas of high risk (e.g. contamination hotspots), to recognize hazards (bioassay tests), and to prevent exposure through contaminant cleanups...
February 17, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28212003/tip2o7-and-expanded-graphite-nanocomposite-as-anode-material-for-aqueous-lithium-ion-batteries
#9
Yunping Wen, Long Chen, Ying Pang, Zhaowei Guo, Duan Bin, Yong-Gang Wang, Congxiao Wang, Yongyao Xia
This paper reports a facile sol-gel synthesis method to successfully prepare the TiP2O7/expanded graphite (EG) nanocomposite as an advanced anode material for aqueous lithium-ion batteries. The constructed TiP2O7 nanocomposite (50-100 nm) are in-situ encapsulated in the pore and layer structure of expanded graphite with good conductivity and high specific surface area. As a consequence, the resulting TiP2O7/EG electrode exhibits a reversible capacity of 66 mAh g-1 at 0.1 A g-1 with an appropriate potential of -0...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28211932/nanostructured-material-based-biofuel-cells-recent-advances-and-future-prospects
#10
REVIEW
Cui-E Zhao, Panpan Gai, Rongbin Song, Ying Chen, Jianrong Zhang, Jun-Jie Zhu
During the past decade, biofuel cells (BFCs) have emerged as an emerging technology on account of their ability to directly generate electricity from biologically renewable catalysts and fuels. Due to the boost in nanotechnology, significant advances have been accomplished in BFCs. Although it is still challenging to promote the performance of BFCs, adopting nanostructured materials for BFC construction has been extensively proposed as an effective and promising strategy to achieve high energy production. In this review, we presented the major novel nanostructured materials applied for BFCs and highlighted the breakthroughs in this field...
February 17, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28211890/local-melting-to-design-strong-and-plastically-deformable-bulk-metallic-glass-composites
#11
Yue-Sheng Qin, Xiao-Liang Han, Kai-Kai Song, Yu-Hao Tian, Chuan-Xiao Peng, Li Wang, Bao-An Sun, Gang Wang, Ivan Kaban, Jürgen Eckert
Recently, CuZr-based bulk metallic glass (BMG) composites reinforced by the TRIP (transformation-induced plasticity) effect have been explored in attempt to accomplish an optimal of trade-off between strength and ductility. However, the design of such BMG composites with advanced mechanical properties still remains a big challenge for materials engineering. In this work, we proposed a technique of instantaneously and locally arc-melting BMG plate to artificially induce the precipitation of B2 crystals in the glassy matrix and then to tune mechanical properties...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211274/large-grain-based-hole-blocking-layer-free-planar-type-perovskite-solar-cell-with-best-efficiency-of-18-20
#12
Haejun Yu, Jaehoon Ryu, Jong Woo Lee, Jongmin Roh, Kisu Lee, Juyoung Yun, Jungsup Lee, Yun Ki Kim, Doyk Hwang, Jooyoun Kang, Seong Keun Kim, Jyongsik Jang
There remains tremendous interest in perovskite solar cells (PSCs) in the solar energy field; the certified power conversion efficiency (PCE) now exceeds 20 %. Along with research focused on enhancing PCE, studies are also underway concerning PSC commercialization. It is crucial to simplify the fabrication process and reduce the production cost to facilitate commercialization. Herein, we successfully fabricated highly efficient hole-blocking layer (HBL)-free PSCs through vigorously interrupting penetration of hole-transport material (HTM) into FTO by large grain based-CH3NH3PbI3 (MAPbI3) film, thereby obtaining a PCE of 18...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28211269/phosphorus-based-alloy-materials-for-advanced-potassium-ion-battery-anode
#13
Wenchao Zhang, Jianfeng Mao, Sean Li, Zhixin Chen, Zaiping Guo
Potassium-ion batteries (PIBs) are interesting as one of the alternative metal-ion battery systems to lithium-ion batteries (LIBs) due to the abundance and low cost of potassium. We have herein investigated Sn4P3/C composite as a novel anode material for PIBs. The electrode delivered a reversible capacity of 384.8 mA h g-1 at 50 mA g-1 and a good rate capability of 221.9 mA h g-1, even at 1 A g-1. Its electrochemical performance is better than any anode material reported so far for PIBs. It was also found that the Sn4P3/C electrode displays a discharge potential plateau of 0...
February 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28208639/biological-control-strategies-for-mosquito-vectors-of-arboviruses
#14
REVIEW
Yan-Jang S Huang, Stephen Higgs, Dana L Vanlandingham
Historically, biological control utilizes predatory species and pathogenic microorganisms to reduce the population of mosquitoes as disease vectors. This is particularly important for the control of mosquito-borne arboviruses, which normally do not have specific antiviral therapies available. Although development of resistance is likely, the advantages of biological control are that the resources used are typically biodegradable and ecologically friendly. Over the past decade, the advancement of molecular biology has enabled optimization by the manipulation of genetic materials associated with biological control agents...
February 10, 2017: Insects
https://www.readbyqxmd.com/read/28207398/acoustic-classification-and-optimization-for-multi-modal-rendering-of-real-world-scenes
#15
Carl Schissler, Christian Loftin, Dinesh Manocha
We present a novel algorithm to generate virtual acoustic effects in captured 3D models of real-world scenes for multimodal augmented reality. We leverage recent advances in 3D scene reconstruction in order to automatically compute acoustic material properties. Our technique consists of a two-step procedure that first applies a convolutional neural network (CNN) to estimate the acoustic material properties, including frequency-dependent absorption coefficients, that are used for interactive sound propagation...
February 9, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28207171/arrayed-van-der-waals-broadband-detectors-for-dual-band-detection
#16
Peng Wang, Shanshan Liu, Wenjin Luo, Hehai Fang, Fan Gong, Nan Guo, Zhi-Gang Chen, Jin Zou, Yan Huang, Xiaohao Zhou, Jianlu Wang, Xiaoshuang Chen, Wei Lu, Faxian Xiu, Weida Hu
An advanced visible/infrared dual-band photodetector with high-resolution imaging at room temperature is proposed and demonstrated for intelligent identification based on 2D GaSe/GaSb vertical heterostructure. It resolves the challenges of producing large-scale 2D growth, achieving fast response speed, outstanding detectivity, and lower manufacture cost, which are the main obstacles for industrialization of 2D-materials-based photodetection.
February 16, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28206768/surface-energy-in-nanocrystalline-carbon-thin-films-effect-of-size-dependence-and-atmospheric-exposure
#17
Manish Kumar, Amjed Javid, Jeon Geon Han
Surface energy (SE) is the most sensitive and fundamental parameter for governing the interfacial interactions in nanoscale carbon materials. However, on account of the involved complexities of hybridizations states and surface-bonds, achieved SE values are often lesser in comparison to their theoretical counterparts and strongly influenced with stability aspects. Here, an advanced facing-target pulsed DC unbalanced magnetron sputtering process is presented for the synthesis of undoped and H/N doped- nanocrystalline carbon thin films...
February 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28206737/bio-inspired-hierarchically-structured-surfaces-for-efficient-capture-and-release-of-circulating-tumor-cells
#18
Xiao-Qiu Dou, Ping Li, Siyu Jiang, Haider Bayat, Holger Schönherr
The development of novel bio-inspired surfaces with hierarchical micro- and nanoscale topographic structures for efficient capture and release of circulating tumor cells (CTCs) is reported. The capture of CTCs, facilitated by surface-immobilized epithelial cell adhesion molecule antibodies (anti-EpCAM), was shown to be significantly enhanced in novel three-dimensional hierarchically structured surfaces that were fabricated by replicating the natural micro- and nanostructures of rose petals. Under static conditions, these hierarchical capture substrates exhibited up to 6 times higher cell capture ability at concentrations of 100 cells mL-1 in contrast to flat anti-EpCAM-functionalized polydimethylsiloxane (PDMS) surfaces...
February 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28205549/local-ph-oscillations-witness-autocatalytic-self-organization-of-biomorphic-nanostructures
#19
M Montalti, G Zhang, D Genovese, J Morales, M Kellermeier, J M García-Ruiz
Bottom-up self-assembly of simple molecular compounds is a prime pathway to complex materials with interesting structures and functions. Coupled reaction systems are known to spontaneously produce highly ordered patterns, so far observed in soft matter. Here we show that similar phenomena can occur during silica-carbonate crystallization, the emerging order being preserved. The resulting materials, called silica biomorphs, exhibit non-crystallographic curved morphologies and hierarchical textures, much reminiscent of structural principles found in natural biominerals...
February 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28205509/anisotropic-mechanical-and-optical-response-and-negative-poisson-s-ratio-in-mo2c-nanomembranes-revealed-by-first-principles-simulations
#20
Bohayra Mortazavi, Masoud Shahrokhi, Meysam Makaremi, Timon Rabczuk
Transition metal carbides include a wide variety of materials with attractive properties that are suitable for numerous and diverse applications. A most recent experimental advance could provide a path toward the successful synthesis of large-area and high-quality ultrathin Mo2C membranes with superconducting properties. In the present study, we used first-principles density functional theory calculations to explore the mechanical and optical response of single-layer and free-standing Mo2C. Uniaxial tensile simulations along the armchair and zigzag directions were conducted and we found that while the elastic properties are close along various loading directions, the nonlinear regimes in stress-strain curves are considerably different...
February 16, 2017: Nanotechnology
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