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https://www.readbyqxmd.com/read/28548100/hierarchically-structured-lithium-titanate-for-ultrafast-charging-in-long-life-high-capacity-batteries
#1
Mateusz Odziomek, Frédéric Chaput, Anna Rutkowska, Konrad Świerczek, Danuta Olszewska, Maciej Sitarz, Frédéric Lerouge, Stephane Parola
High-performance Li-ion batteries require materials with well-designed and controlled structures on nanometre and micrometre scales. Electrochemical properties can be enhanced by reducing crystallite size and by manipulating structure and morphology. Here we show a method for preparing hierarchically structured Li4Ti5O12 yielding nano- and microstructure well-suited for use in lithium-ion batteries. Scalable glycothermal synthesis yields well-crystallized primary 4-8 nm nanoparticles, assembled into porous secondary particles...
May 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28545831/pre-post-evaluation-of-effects-of-a-titanium-dioxide-coating-on-environmental-contamination-of-an-intensive-care-unit-the-titanic-study
#2
B de Jong, A M Meeder, K W A C Koekkoek, M A Schouten, P Westers, A R H van Zanten
BACKGROUND: Among patients admitted to European hospitals or intensive care units (ICUs), 5.7% and 19.5% will encounter healthcare-associated infections (HAIs), respectively, and antimicrobial resistance is emerging. As hospital surfaces are contaminated with potentially pathogenic bacteria, environmental cleanliness is an essential aspect to reduce HAIs. AIM: To address the efficacy of a titanium dioxide coating in reducing the microbial colonization of environmental surfaces in an ICU...
April 15, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28543615/improved-image-quality-and-reduced-power-deposition-in-the-spine-at-3-t-using-extremely-high-permittivity-materials
#3
Kirsten Koolstra, Peter Börnert, Wyger Brink, Andrew Webb
PURPOSE: To explore the effect of using extremely high permittivity (εr ∼1,000) materials on image quality and power requirements of spine imaging at 3 T. THEORY AND METHODS: A linear array of high permittivity dielectric blocks made of lead zirconate titanate (PZT) was designed and characterized by electromagnetic simulations and experiments. Their effect on the transmit efficiency, receive sensitivity, power deposition, and diagnostic image quality was analyzed in vivo in 10 healthy volunteers...
May 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28537700/inflatable-penile-prosthesis-as-tissue-expander-what-is-the-evidence
#4
Paul H Chung, Jordan A Siegel, Timothy J Tausch, Alexandra K Klein, Jeremy M Scott, Allen F Morey
OBJECTIVE: Many patients who undergo inflatable penile prosthesis (IPP) replacement are often upsized to larger cylinders, suggesting the IPP may serve as a tissue expander and increase internal penile length. The objective of this study is to evaluate whether cylinder length increases with subsequent IPP insertion. MATERIALS AND METHODS: We queried American Medical Systems and Coloplast Patient Information Form databases to identify patients who underwent IPP placement and replacement between 2004-2013...
May 23, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28526857/room-temperature-soft-mode-and-ferroelectric-like-polarization-in-srtio3-ultrathin-films-infrared-and-ab-initio-study
#5
Wei-Wei Peng, Robert Tétot, Gang Niu, Emilie Amzallag, Bertrand Vilquin, Jean-Blaise Brubach, Pascale Roy
Due to the remarkable possibilities of epitaxially growing strontium titanate (SrTiO3 or STO) on silicon, this oxide is widely used as a buffer layer for integrating other perovskite oxides which allows for the development of various functional electronic devices on silicon. Moreover, STO is known to be an incipient ferroelectric in bulk but may become ferroelectric when in the form of strained ultrathin films. Given the importance of the potential applications for electronics if this property is demonstrated, we performed a spectroscopic study of STO on Si(001) templates coupling experimental and ab initio investigations...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522879/comparison-of-different-bonding-techniques-for-efficient-strain-transfer-using-piezoelectric-actuators
#6
Dorian Ziss, Javier Martín-Sánchez, Thomas Lettner, Alma Halilovic, Giovanna Trevisi, Rinaldo Trotta, Armando Rastelli, Julian Stangl
In this paper, strain transfer efficiencies from a single crystalline piezoelectric lead magnesium niobate-lead titanate substrate to a GaAs semiconductor membrane bonded on top are investigated using state-of-the-art x-ray diffraction (XRD) techniques and finite-element-method (FEM) simulations. Two different bonding techniques are studied, namely, gold-thermo-compression and polymer-based SU8 bonding. Our results show a much higher strain-transfer for the "soft" SU8 bonding in comparison to the "hard" bonding via gold-thermo-compression...
April 2017: Journal of Applied Physics
https://www.readbyqxmd.com/read/28522528/global-drainage-patterns-and-the-origins-of-topographic-relief-on-earth-mars-and-titan
#7
Benjamin A Black, J Taylor Perron, Douglas Hemingway, Elizabeth Bailey, Francis Nimmo, Howard Zebker
Rivers have eroded the topography of Mars, Titan, and Earth, creating diverse landscapes. However, the dominant processes that generated topography on Titan (and to some extent on early Mars) are not well known. We analyzed drainage patterns on all three bodies and found that large drainages, which record interactions between deformation and erosional modification, conform much better to long-wavelength topography on Titan and Mars than on Earth. We use a numerical landscape evolution model to demonstrate that short-wavelength deformation causes drainage directions to diverge from long-wavelength topography, as observed on Earth...
May 19, 2017: Science
https://www.readbyqxmd.com/read/28516460/taxane-grafted-metal-oxide-nanoparticles-as-a-new-theranostic-tool-against-cancer-the-promising-example-of-docetaxel-functionalized-titanate-nanotubes-on-prostate-tumors
#8
Alexis Loiseau, Julien Boudon, Céline Mirjolet, Gilles Créhange, Nadine Millot
The combination of anticancer drugs and metal oxide nanoparticles is of great interest in cancer nanomedicine. Here, the development of a new nanohybrid, titanate nanotube-docetaxel (TiONts-DTX) is reported, the two parts of which are conjugated by covalent linkages. Unlike most nanoparticles currently being developed for biomedical purposes, TiONts present a needle-shaped morphology. The surface of TiONts is linked with 3-aminopropyl triethoxysilane and with a hetero-bifunctional polymer (polyethylene glycol) to create well-dispersed and biocompatible nanovectors...
May 18, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28508185/titan-phase-iii-study-of-doxorubicin-cyclophosphamide-followed-by-ixabepilone-or-paclitaxel-in-early-stage-triple-negative-breast-cancer
#9
Denise A Yardley, Edward R Arrowsmith, Brooke R Daniel, Janice Eakle, Adam Brufsky, David R Drosick, Fred Kudrik, Linda D Bosserman, Mark R Keaton, Sharon A Goble, Jeffrey A Bubis, Victor M Priego, Kelly Pendergrass, Yvonne Manalo, Martin Bury, Donald S Gravenor, Gladys I Rodriguez, Roger C Inhorn, Robyn R Young, William N Harwin, Caryn Silver, John D Hainsworth, Howard A Burris
PURPOSE: Ixabepilone is a microtubule stabilizer with activity in taxane-refractory metastatic breast cancer and low susceptibility to taxane-resistance mechanisms including multidrug-resistant phenotypes and high β-III tubulin expression. Since these resistance mechanisms are common in triple-negative breast cancer (TNBC), ixabepilone may have particular advantages in this patient population. This study evaluated the substitution of ixabepilone for paclitaxel following doxorubicin/cyclophosphamide (AC) in the adjuvant treatment of early-stage TNBC...
May 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28506025/modified-pechini-processing-of-barium-and-lanthanum-lithium-titanate-nanoparticles-and-thin-films
#10
A Suslov, S Kobylianska, D Durilin, O Ovchar, V Trachevskii, B Jancar, A Belous
Barium-strontium titanate (BST) Ba0.6Sr 0.4 TiO3 and lanthanum-lithium titanate (LLT) La0.5Li0.5TiO3 nanopowders and thin films have been obtained via the modified Pechini route. Polyesterification and complexation processes of gel formation have been examined. Hypothetical models of coordinative polymers formed in sol-gel system have been suggested. It has been shown that BST and LLT solid solutions form in one step at relatively low temperature. X-ray diffraction confirms that the final products, which are single phases and have cubic shape, are formed at 600 and 700 °C for BST and LLT respectively...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28504161/rapid-fabrication-of-tio2-carboxymethyl-cellulose-coatings-capable-of-shielding-uv-antifog-and-delaying-support-aging
#11
Xiaozhou Li, Junping Lv, Dehuai Li, Lin Wang
Agricultural plastic films capable of shielding UV, filtering visible light and antifog are important to prolong their life and protect safeties of agriculturists and crops. In this work, high stable and small size TiO2@polymer nanoparticles (NPs) were prepared by an efficient one-pot microwave synthesis using titanic sulfate as Ti resource, carboxymethyl cellulose sodium (CMC) as complexing agent and stabilizer. The TiO2@CMC NPs obtained were then utilized to fabricate poly(ethylene imine) (PEI)/TiO2@CMC coatings on the surface of polypropylene films by a layer-by-layer assembly technique...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28499630/effect-of-surface-alkali-based-treatment-of-titanium-implants-on-ability-to-promote-in-vitro-mineralization-and-in-vivo-bone-formation
#12
Winston A Camargo, Shinji Takemoto, Jan Willem Hoekstra, Sander C G Leeuwenburgh, John A Jansen, Jeroen J J P van den Beucken, Hamdan S Alghamdi
This study investigated whether a novel alkali-based surface modification enhances in-vitro mineralization as well as in-vivo bone formation around titanium (Ti) implants in a femoral condyle model of 36 male Wister rats. All implant surfaces were grit-blasted and then received either acid-etching treatment, alkali-based treatment, or were left untreated (controls). Histological and histomorphometrical analyses were performed on retrieved specimens after 4 and 8 weeks of healing to assess peri-implant bone formation...
May 9, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28499303/-long-term-follow-up-and-patient-satisfaction-after-tympanoplasty-with-titanium-clip-prothesis
#13
Guido Wolferts, Daniel Schicke, K-Wolfgang Delank
Aim of the present study is to evaluate the long term results of ossiculoplasty using titanium clip prosthesis. A retrospective analysis with prospective follow-up has been done including for all patients who had a Clip-PORP implanted between the years 2002-2013. Following this, audiometric hearing results were measured with clinical examination including otoscopy and quality of life evaluation using Glasgow benefit inventory. 48 patients (51 ears, 29 men, 19 women, average age 44.1 years) received followed up after an average duration of 6...
May 12, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28499199/perovskite-type-calcium-titanate-nanoparticles-as-novel-matrix-for-designing-sensitive-electrochemical-biosensing
#14
Lei Wang, Juan Li, Mengjie Feng, Lingfeng Min, Juan Yang, Suhua Yu, Yongcai Zhang, Xiaoya Hu, Zhanjun Yang
In this work, novel perovskite-type calcium titanate nanoparticles (CaTiO3NPs) were for the first time exploited for the immobilization of proteins and the development of electrochemical biosensor. The CaTiO3NPs were synthesized with a simple and cost-effective route at low temperature, and characterized by scanning electron microscopy, X-ray photoelectron spectroscopic spectrum, electrochemical impedance spectrum, UV-visible spectroscopy, Fourier transform infrared spectrum, and cyclic voltammetry, respectively...
May 4, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28498377/broadband-ultrafast-photovoltaic-detectors-based-on-large-scale-topological-insulator-sb2te3-sto-heterostructures
#15
Honghui Sun, Tian Jiang, Yunyi Zang, Xin Zheng, Yan Gong, Yong Yan, Zhongjie Xu, Yu Liu, Liang Fang, Xiang'ai Cheng, Ke He
Topological insulators (TIs) are new states of quantum matter in which the spin-momentum-locked surface states reside in the bulk insulating gap and have triggered extensive investigations on fundamental properties and potential applications. Herein, we report scalable, broadband photovoltaic detectors based on the topological insulator Sb2Te3/strontium titanate (STO) heterostructure. Large-scale (2 mm × 5 mm), high crystalline quality p-type Sb2Te3 films were fabricated on an n-type STO substrate by the molecular beam epitaxy (MBE) method...
May 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28494309/macroscopic-and-spectroscopic-studies-of-the-enhanced-scavenging-of-cr-vi-and-se-vi-from-water-by-titanate-nanotube-anchored-nanoscale-zero-valent-iron
#16
Baowei Hu, Guohe Chen, Chengan Jin, Jun Hu, Chengcai Huang, Jiang Sheng, Guodong Sheng, Jingyuan Ma, Yuying Huang
Herein, a promising titanate nanotubes (TNT) anchored nanoscale zero-valent iron (NZVI) nanocomposite (NZVI/TNT) was synthesized, characterized and used for the enhanced scavenging of Cr(VI) and Se(VI) from water. The structural identification indicated that NZVI was uniformly loaded on TNT, thereby, the oxidation and aggregation of NZVI was significantly minimized. The macroscopic experimental results indicated that NZVI/TNT exhibited higher efficiency as well as rate on Cr(VI) and Se(VI) scavenging resulted from the good synergistic effect between adsorption and reduction...
April 28, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28493386/a-ferroelectric-ceramic-polymer-composite-based-capacitive-electrode-array-for-in-vivo-recordings
#17
Changyong Chen, Miaomiao Xue, Yige Wen, Guang Yao, Yan Cui, Feiyi Liao, Zhuocheng Yan, Long Huang, Saeed Ahmed Khan, Min Gao, Taisong Pan, Hulin Zhang, Wei Jing, Daqing Guo, Sanfeng Zhang, Hailiang Yao, Xiong Zhou, Qiang Li, Yang Xia, Yuan Lin
A new implantable capacitive electrode array for electrocorticography signal recording is developed with ferroelectric ceramic/polymer composite. This ultrathin and electrically safe capacitive electrode array is capable of attaching to the biological tissue conformably. The barium titanate/polyimide (BaTiO3 /PI) nanocomposite with high dielectric constant is successfully synthesized and employed as the ultrathin dielectric layer of the capacitive BaTiO3 /PI electrode array. The performance of the capacitive BaTiO3 /PI electrode array is evaluated by electrical characterization and 3D finite-element modeling...
May 11, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28493040/stability-of-capsule-closure-and-postoperative-anterior-knee-pain-after-medial-parapatellar-approach-in-tka
#18
Armin Keshmiri, Fabian Dotzauer, Clemens Baier, Günther Maderbacher, Joachim Grifka, Ernst Sendtner
PURPOSE: Anterior knee pain after total knee arthroplasty (TKA) remains a widely discussed postoperative complication. In contrast to sports traumatology, the role of the dissected medial patellofemoral ligament (MPFL) using a medial parapatellar approach in TKA has not been discussed so far. In the present study, it was hypothesized that the attempted repair of the MPFL in TKA by simple closure of the joint capsule may not be successful in some cases, causing anterior knee pain. Furthermore, it was hypothesized, that the success of repair might be influenced by femoral component rotation...
May 10, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28492632/photo-assisted-inactivation-of-escherichia-coli-bacteria-by-silver-functionalized-titanate-nanotubes-ag-h2ti2o5%C3%A2-h2o
#19
A Patrón-Soberano, B P Núñez-Luna, S Casas-Flores, A De Las Peñas, R B Domínguez-Espíndola, V Rodríguez-González
One-dimensional titanate nanotubes (H2Ti2O5·H2O) functionalized with silver nanoparticles (AgNPs) exhibited unique properties for the effective inactivation of the Gram-negative Escherichia coli within 45 minutes under irradiation using a 65 W halogen lamp. The pathway of the photo-assisted catalytic inactivation was examined by SEM and TEM using a reproducible biological protocol for sample preparations. The membrane integrity of the bacteria was damaged due to the oxidative stress caused by the reactive oxygen species, the bacteriostatic effect of the highly-dispersed-surface AgNPs (∼5 nm) and the sharp nanotube penetration that induced the cell death...
May 11, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28473187/serum-rbp4-and-ckd-association-with-insulin-resistance-and-lipids
#20
Maria Alice M Domingos, Márcia Queiroz, Paulo Andrade Lotufo, Isabela Judith Benseñor, Silvia Maria de Oliveira Titan
OBJECTIVE: Serum RBP4 is new adipokine and it has been related to insulin resistance and diabetes risk in animal and clinical studies. However, there is controversy on this relationship among CKD patients. In this study, we evaluated the association of serum RBP4 with insulin resistance and cardiovascular risk factors in CKD. METHODS: Baseline data from the PROGREDIR Study (Sao Paulo, Brazil) comprising 454 participants (mainly stages 3 and 4) was analyzed. RESULTS: In univariable analysis, RBP4 was inversely related to renal function, age and HDL, and positively related to other lipids, insulinemia, HOMA, glycemia, albumin, phosphorus and right hepatic lobe diameter...
April 18, 2017: Journal of Diabetes and its Complications
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