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https://www.readbyqxmd.com/read/29150617/carbon-contamination-during-ion-irradiation-accurate-detection-and-characterization-of-its-effect-on-microstructure-of-ferritic-martensitic-steels
#1
Jing Wang, Mychailo B Toloczko, Karen Kruska, Daniel K Schreiber, Danny J Edwards, Zihua Zhu, Jiandong Zhang
Accelerator-based ion beam irradiation techniques have been used to study radiation effects in materials for decades. Although carbon contamination induced by ion beams in target materials is a well-known issue in some material systems, it has not been fully characterized nor quantified for studies in ferritic/martensitic (F/M) steels that are candidate materials for applications such as core structural components in advanced nuclear reactors. It is an especially important issue for this class of material because of the strong effect of carbon level on precipitate formation...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29149836/are-there-different-kinds-of-aging
#2
Amalia Gabriela Diaconeasa
A critical analysis of the accelerated aging syndromes may explain what aging is, but also why some tissues and organs age at accelerated rates in comparison with aging rates of other tissues. Syndromes of accelerated aging are caused by mutations affecting the integrity of the genetic material. Among them, the most studied is Werner's syndrome, "adult progeria", caused by a recessive autosomal mutation with a frequency of 1 in 10 millions, which affects a helicase involved in DNA repair. In Werner syndrome, there is a loss of heterochromatin, though the stability of heterochromatin is also affected in "normal" aging...
November 16, 2017: Current Aging Science
https://www.readbyqxmd.com/read/29149537/multifunctional-cellular-materials-based-on-2d-nanomaterials-prospects-and-challenges
#3
REVIEW
Ling Qiu, Zijun He, Dan Li
Recent advances in emerging 2D nanomaterial-based cellular materials (2D-CMs) open up new opportunities for the development of next generation cellular solids with exceptional properties. Herein, an overview of the current research status of 2D-CMs is provided and their future opportunities are highlighted. First, the unique features of 2D nanomaterials are introduced to illustrate why these nanoscale building blocks are promising for the development of novel cellular materials and what the new features of 2D nanoscale building blocks can offer when compared to their 0D and 1D counterparts...
November 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29149231/field-strain-and-light-induced-superconductivity-in-organic-strongly-correlated-electron-systems
#4
Masayuki Suda, Hiroshi M Yamamoto
Stimulated by the discovery of high-temperature superconductivity in 1986, band-filling control of strongly correlated electron systems has been a persistent challenge over the past three decades in condensed matter science. In particular, recent efforts have been focused on electrostatic carrier doping of these materials, utilising field-effect transistor (FET) structures to find novel superconductivity. Our group found the first field-induced superconductivity in an organic-based material in 2013 and has been developing various types of superconducting organic FETs...
November 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29148772/electromechanical-properties-of-ba-1-x-srxtio3-perovskite-solid-solutions-from-first-principles-calculations
#5
Leonid L Rusevich, Guntars Zvejnieks, Alessandro Erba, Roberto Dovesi, Eugene E Kotomin
An enhancement of the piezoelectric properties of lead-free materials, which allow conversion of mechanical energy into electricity, is a task of great importance and interest. Results of first-principles calculations of piezoelectric/electromechanical properties of the Ba(1-x)SrxTiO3 (BSTO) ferroelectric solid solution with perovskite structure are presented and discussed. Calculations are performed within the linear combination of atomic orbitals (LCAO) approximation and periodic-boundary conditions, using advanced hybrid functionals of the density-functional-theory (DFT)...
November 17, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29148727/substrate-assisted-in-situ-confinement-pyrolysis-of-zeolitic-imidazolate-frameworks-to-nitrogen-doped-hierarchical-porous-carbon-nanoframes-with-superior-lithium-storage
#6
Wei Tian, Jialiang Liu, Yixian Wang, Jingyan Liu, Yanpeng Li, Mingbo Wu
Porous carbons generated from the direct pyrolysis of metal organic frameworks (MOFs) have showed great potential as a kind of promising electrode materials for lithium-ion batteries (LIBs). However, several common drawbacks, such as the inevitable structural damage during carbonization process and intrinsic micropore-dominated feature of MOFs-derived products, largely impede the exposure of active sites and mass transfer, thus usually resulting in inferior electrochemical performances. In this work, an effective and controllable approach was reported to construct nitrogen-doped hierarchical porous carbon nanoframes (N-HPCFs) through in situ pyrolysis transformation of small-sized zeolitic imidazolate frameworks (ZIFs) that are in advance combined with a two-dimensional substrate templated from g-C3N4...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29148712/constructing-repairable-meta-structures-of-ultra-broadband-electromagnetic-absorption-from-3d-printed-patterned-shells
#7
Wei-Li Song, Zhili Zhou, Lichen Wang, Xiao-Dong Cheng, Mingji Chen, Rujie He, Hao-Sen Chen, Yazheng Yang, Daining Fang
Ultra-broadband electromagnetic absorption materials and structures are increasingly attractive for their critical role in competing to the advanced broadband electromagnetic detective systems. Mechanically soft and weak wax-based materials composites are known to be insufficient to serve for practical electromagnetic absorption applications. To break through such barriers, here we developed an innovative strategy to enable the wax-based composites as robust and repairable meta-structures by employing a 3D printed polymeric patterned shell...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29148710/lipidqc-method-validation-tool-for-visual-comparison-to-srm-1950-using-nist-interlaboratory-comparison-exercise-lipid-consensus-mean-estimate-values
#8
Candice Zena Ulmer, Jared M Ragland, Jeremy P Koelmel, Alan Heckert, Christina M Jones, Timothy Garrett, Richard A Yost, John A Bowden
As advances in analytical separation techniques, mass spectrometry instrumentation, and data processing platforms continue to spur growth in the lipidomics field, more structurally unique lipid species are detected and annotated. The lipidomics community is in need of benchmark reference values to assess the validity of various lipidomics workflows in providing accurate quantitative measurements across the diverse lipidome. LipidQC addresses the harmonization challenge in lipid quantitation by providing a semi-automated process, independent of analytical platform, for visual comparison of experimental results of National Institute of Standards and Technology Standard Reference Material (SRM) 1950 Metabolites in Frozen Human Plasma against benchmark consensus mean concentrations derived from the NIST Lipidomics Interlaboratory Comparison Exercise...
November 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29148697/synthesis-of-hierarchical-sisal-like-v2o5-with-exposed-stable-001-facets-as-long-life-cathode-materials-for-advanced-lithium-ion-batteries
#9
Naiteng Wu, Wuzhou Du, Guilong Liu, Zhan Zhou, Hong-Ru Fu, Qianqian Tang, Xianming Liu, Yan-Bing He
Vanadium pentoxide (V2O5) is considered a promising cathode material for advanced lithium-ion batteries due to its high specific capacity and low cost. However, the application of V2O5-based electrodes has been hindered by their inferior conductivity, cycling stability and power performance. Herein, hierarchical sisal-like V2O5 microstructures consisting of primary one-dimension (1D) nanobelt with [001] facets orientation growth and rich oxygen vacancies are synthesized through a facile hydrothermal process using polyoxyethylene-20-cetyl-ether as surface control agent, and followed by calcination...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29148619/molten-salt-assisted-self-assembly-synthesis-of-mesoporous-licoo2-and-limn2-o4-thin-films-and-investigation-of-electrocatalytic-water-oxidation-performance-of-lithium-cobaltate
#10
Gülbahar Saat, Fadime Mert Balci, Elif Pınar Alsaç, Ferdi Karadas, Ömer Dag
Mesoporous thin films of transition metal lithiates (TML) belong to an important group of materials for the advancement of electrochemical systems. This study demonstrates a simple one pot method to synthesize the first examples of mesoporous LiCoO2 and LiMn2 O4 thin films. Molten salt assisted self-assembly can be used to establish an easy route to produce mesoporous TML thin films. The salts (LiNO3 and [Co(H2 O)6 ](NO3 )2 or [Mn(H2 O)4 ](NO3 )2 ) and two surfactants (10-lauryl ether and cethyltrimethylammonium bromide (CTAB) or cethyltrimethylammonium nitrate (CTAN)) form stable liquid crystalline mesophases...
November 17, 2017: Small
https://www.readbyqxmd.com/read/29148536/characterization-of-foreign-materials-in-paraffin-embedded-pathological-specimens-using-in-situ-multi-elemental-imaging-with-laser-spectroscopy
#11
Benoit Busser, Samuel Moncayo, Florian Trichard, Vincent Bonneterre, Nicole Pinel, Frédéric Pelascini, Philippe Dugourd, Jean-Luc Coll, Michel D'Incan, Julie Charles, Vincent Motto-Ros, Lucie Sancey
Pathologists typically encounter many disparate exogenous materials in clinical specimens during their routine histopathological examinations, especially within the skin, lymph nodes, and lungs. These foreign substances may be free extracellular deposits or induce several clinical abnormalities or histopathological patterns. However, pathologists almost never investigate or report the chemical nature of exogenous metals in clinical specimens due to a lack of convenient and available technologies. In this paper, a novel strategy based on laser-induced breakdown spectroscopy (LIBS) technology is evaluated for in situ multi-elemental tissue imaging...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29147993/preparation-and-characterization-of-gelatin-sericin-carboxymethyl-chitosan-medical-tissue-glue
#12
Min Liang, Zhenzhu Li, Cengceng Gao, Fuping Wang, Zhongmin Chen
BACKGROUND: The development and application of medical glue has been continuously expanding and advancing. However, there are few glues that combine low-cost with excellent biocompatibility. METHODS: We have prepared a medical tissue glue using a gelatin (Gel), sericin (SS) and carboxymethyl chitosan (CMCS) blend solution, cross-linked with 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC). The combination's characteristics and microstructure morphology were observed by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM)...
November 16, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/29147989/abatement-of-humic-acid-from-aqueous-solution-using-a-carbonaceous-conjugated-microporous-polymer-derived-from-waste-polystyrene
#13
Nhamo Chaukura, Welldone Moyo, Bhekie B Mamba, Thabo I Nkambule
Humic acid (HA) is a major constituent of natural organic matter (NOM) found in water systems. Although NOM generally does not have any known harmful effects to humans, it imparts repulsive organoleptic properties to water, reacts with disinfectants to produce toxic products, and interferes with the efficiency of water treatment processes. The removal of NOM and related compounds from water is therefore important to render water potable and suitable for other applications. In this work, a hitherto unreported carbonaceous conjugated microporous polymer (CCMP) prepared through the organic-polymeric-precursor-controlled carbonization of hypercrosslinked post-consumer waste polystyrene (WPS) was evaluated for its capacity to remove HA from synthetic wastewater...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29147708/advanced-sensing-imaging-and-therapy-nanoplatforms-based-on-nd-3-doped-nanoparticle-composites-exhibiting-upconversion-induced-by-808-nm-near-infrared-light
#14
REVIEW
Ming-Hsien Chan, Ru-Shi Liu
Malignant tumors are currently the leading cause of death worldwide, followed by cardiovascular and cerebrovascular diseases. Although various methods, such as blood examination, tissue biopsy, and radiography, for tumor detection, exist, these techniques still require further refinement. Researchers have recently explored the use of novel adjuvant methods, specifically luminescence imaging detection, for the detection of tumors. The light-triggered approach is less invasive and induces fewer side effects than traditional detection methods...
November 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/29147557/the-diversity-and-utility-of-amyloid-fibrils-formed-by-short-amyloidogenic-peptides
#15
REVIEW
Zahraa S Al-Garawi, Kyle L Morris, Karen E Marshall, Jutta Eichler, Louise C Serpell
Amyloidogenic peptides are well known for their involvement in diseases such as type 2 diabetes and Alzheimer's disease. However, more recently, amyloid fibrils have been shown to provide scaffolding and protection as functional materials in a range of organisms from bacteria to humans. These roles highlight the incredible tensile strength of the cross-β amyloid architecture. Many amino acid sequences are able to self-assemble to form amyloid with a cross-β core. Here we describe our recent advances in understanding how sequence contributes to amyloidogenicity and structure...
December 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/29147500/pressure-induced-dramatic-changes-in-organic-inorganic-halide-perovskites
#16
Xujie Lü, Wenge Yang, Quanxi Jia, Hongwu Xu
Organic-inorganic halide perovskites have emerged as a promising family of functional materials for advanced photovoltaic and optoelectronic applications with high performances and low costs. Various chemical methods and processing approaches have been employed to modify the compositions, structures, morphologies, and electronic properties of hybrid perovskites. However, challenges still remain in terms of their stability, the use of environmentally unfriendly chemicals, and the lack of an insightful understanding into structure-property relationships...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29145727/directly-observing-micelle-fusion-and-growth-in-solution-by-liquid-cell-transmission-electron-microscopy
#17
Lucas R Parent, Evangelos Bakalis, Abelardo Ramírez-Hernández, Jacquelin K Kammeyer, Chiwoo Park, Juan de Pablo, Francesco Zerbetto, Joseph P Patterson, Nathan C Gianneschi
Amphiphilic small molecules and polymers form commonplace nanoscale macromolecular compartments and bilayers, and as such are truly essential components in all cells and in many cellular processes. The nature of these architectures, including their formation, phase changes, and stimuli-response behaviors, is necessary for the most basic functions of life, and over the past half-century, these natural micellar structures have inspired a vast diversity of industrial products, from biomedicines to detergents, lubricants, and coatings...
November 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29145500/estimation-of-stress-distribution-in-ferromagnetic-tensile-specimens-using-low-cost-eddy-current-stress-measurement-system-and-bp-neural-network
#18
Jianwei Li, Weimin Zhang, Weiqin Zeng, Guolong Chen, Zhongchao Qiu, Xinyuan Cao, Xuanyi Gao
Estimation of the stress distribution in ferromagnetic components is very important for evaluating the working status of mechanical equipment and implementing preventive maintenance. Eddy current testing technology is a promising method in this field because of its advantages of safety, no need of coupling agent, etc. In order to reduce the cost of eddy current stress measurement system, and obtain the stress distribution in ferromagnetic materials without scanning, a low cost eddy current stress measurement system based on Archimedes spiral planar coil was established, and a method based on BP neural network to obtain the stress distribution using the stress of several discrete test points was proposed...
2017: PloS One
https://www.readbyqxmd.com/read/29144128/proton-driven-intercalation-and-ion-substitution-utilizing-solid-state-electrochemical-reaction
#19
Masaya Fujioka, Chuanbao Wu, Naoki Kubo, Gaoyang Zhao, Atsushi Inoishi, Shigeto Okada, Satoshi Demura, Hideaki Sakata, Manabu Ishimaru, Hideo Kaiju, Junji Nishii
The development of an unconventional synthesis method has a large potential to drastically advance materials science. In this research, a new synthesis method based on a solid-state electrochemical reaction was demonstrated, which can be made available for intercalation and ion substitution. It was referred to as proton-driven ion introduction (PDII). The protons generated by the electrolytic dissociation of hydrogen drive other monovalent cations along a high electric field in the solid state. Utilizing this mechanism, Li(+), Na(+), K(+), Cu(+), and Ag(+) were intercalated into a layered TaS2 single crystal while maintaining high crystallinity...
November 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29143879/comparison-of-analytical-tools-appropriate-for-identification-of-proteinaceous-additives-in-historical-mortars
#20
Iva Krizova, Julia Schultz, Ivan Nemec, Radomir Cabala, Radovan Hynek, Stepanka Kuckova
Natural organic additives such as eggs, lard, resins, and oils have been added to mortars since ancient times, because the ancient builders knew of their positive effect on the mortar quality. The tradition of adding organic materials to mortars was commonly handed down only verbally for thousands years. However, this practice disappeared in the nineteenth century, when the usage of modern materials started. Today, one of the most recent topics in the industry of building materials is the reusing of natural organic materials and searching for the forgotten ancient recipes...
November 16, 2017: Analytical and Bioanalytical Chemistry
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