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Human cardiac 31P magnetic resonance spectroscopy at 7 tesla

Christopher T. Rodgers、William T. Clarke、Carl Snyder 等 6 位作者2013-09-04Magnetic Resonance in Medicine

Purpose Phosphorus magnetic resonance spectroscopy (31P‐MRS) affords unique insight into cardiac energetics but has a low intrinsic signal‐to‐noise ratio (SNR) in humans. Theory predicts an increased 31P‐MRS SNR at 7T, offering exciting possibilities to better investigate cardiac metabolism. We therefore compare the p…

Cardiac Imaging and DiagnosticsAdvanced MRI Techniques and ApplicationsLanthanide and Transition Metal Complexes

An incubation study on the stability and biological effects of pyrogenic and hydrothermal biochar in two soils

Chris Bamminger、Bernd Marschner、Elisabeth Jüschke2013-09-04European Journal of Soil Science

Summary The success and feasibility of CO 2 ‐sequestration through incorporation of biochar into soils depends strongly on the long‐term biochar stability and on the improvements of physical and microbial soil properties. In this study, the stability of two maize‐derived biochars (from pyrolysis and hydrothermal carbo…

Soil Carbon and Nitrogen DynamicsClay minerals and soil interactionsCoal and Its By-products

In Situ Cross-Linkable Hydrogel of Hyaluronan Produced via Copper-Free Click Chemistry

Akira Takahashi、Yukimitsu Suzuki、Takashi Suhara 等 9 位作者2013-09-04Biomacromolecules

Injectable hydrogels are useful in biomedical applications. We have synthesized hyaluronic acids chemically modified with azide groups (HA-A) and cyclooctyne groups (HA-C), respectively. Aqueous HA-A and HA-C solutions were mixed using a double-barreled syringe to form a hydrogel via strain-promoted [3 + 2] cycloaddit…

Supramolecular Self-Assembly in MaterialsClick Chemistry and ApplicationsPeptidase Inhibition and Analysis

Redox-Responsive, Core-Cross-Linked Micelles Capable of On-Demand, Concurrent Drug Release and Structure Disassembly

Hua Wang、Li Tang、Chunlai Tu 等 8 位作者2013-09-04Biomacromolecules

We developed camptothecin (CPT)-conjugated, core-cross-linked (CCL) micelles that are subject to redox-responsive cleavage of the built-in disulfide bonds, resulting in disruption of the micellar structure and rapid release of CPT. CCL micelles were prepared via coprecipitation of disulfide-containing CPT-poly(tyrosin…

Nanoparticle-Based Drug DeliveryAdvanced Polymer Synthesis and CharacterizationSurfactants and Colloidal Systems

Two-Dimensional Vanadium-Doped ZnO Nanosheet-Based Flexible Direct Current Nanogenerator

Manoj Kumar Gupta、Ju‐Hyuck Lee、Keun Young Lee 等 4 位作者2013-09-04ACS Nano

Here, we report the synthesis of lead-free single-crystalline two-dimensional (2D) vanadium(V)-doped ZnO nanosheets (NSs) and their application for high-performance flexible direct current (DC) power piezoelectric nanogenerators (NGs). The vertically aligned ZnO nanorods (NRs) converted to NS networks by V doping. Pie…

ZnO doping and propertiesPerovskite Materials and ApplicationsAdvanced Sensor and Energy Harvesting Materials

Structural Characterization of Intrinsically Disordered Proteins by NMR Spectroscopy

Simone Kosol、Sara Contreras-Martos、Cesyen Cedeño 等 4 位作者2013-09-04Molecules

Recent advances in NMR methodology and techniques allow the structural investigation of biomolecules of increasing size with atomic resolution. NMR spectroscopy is especially well-suited for the study of intrinsically disordered proteins (IDPs) and intrinsically disordered regions (IDRs) which are in general highly fl…

Protein Structure and DynamicsEnzyme Structure and FunctionAdvanced NMR Techniques and Applications

Axion response in Weyl semimetals

Y. Chen、Si Wu、A. A. Burkov2013-09-04Physical Review B

Weyl semimetal is a phase of matter that provides a solid state realization of chiral Weyl fermions. Most of its unique physics is a consequence of chiral anomaly, namely nonconservation of the number of particles of a given chirality. Mathematically, this is expressed in the appearance of the so called $\ensuremath{\…

Metamaterials and Metasurfaces ApplicationsTopological Materials and PhenomenaNoncommutative and Quantum Gravity Theories

Massive Dirac quasiparticles in the optical absorbance of graphene, silicene, germanene, and tinene

Lars Matthes、Olivia Pulci、F. Bechstedt2013-09-04Journal of Physics Condensed Matter

We present first-principles studies of the optical absorbance of the group IV honeycomb crystals graphene, silicene, germanene, and tinene. We account for many-body effects on the optical properties by using the non-local hybrid functional HSE06. The optical absorption peaks are blueshifted due to quasiparticle correc…

Graphene research and applicationsQuantum and electron transport phenomenaTopological Materials and Phenomena

Recovery of Electrical Energy in Microbial Fuel Cells

Zheng Ge、Jian Li、Xiao Li 等 5 位作者2013-09-04Environmental Science & Technology Letters

Recovery of electrical energy is a key parameter for evaluating the performance of microbial fuel cells (MFCs). In this brief review, we analyze energy data in the sampled publications on continuously operated MFCs from the past 12 years and present a rough picture of energy recovery in MFCs. We observe that most MFCs…

Supercapacitor Materials and FabricationElectrochemical sensors and biosensorsMicrobial Fuel Cells and Bioremediation

Near‐Infrared Photoregulated Drug Release in Living Tumor Tissue via Yolk‐Shell Upconversion Nanocages

Lingzhi Zhao、Juanjuan Peng、Qi Huang 等 9 位作者2013-09-04Advanced Functional Materials

Phototrigger‐controlled drug‐release devices (PDDs) can be conveniently manipulated by light to obtain on‐demand release patterns, thereby affording an improved therapeutic efficacy. However, no example of the PDDs has been demonstrated beyond the cellular level to date. By loading 7‐amino‐coumarin derivative caged an…

Luminescence Properties of Advanced MaterialsNanoplatforms for cancer theranosticsLuminescence and Fluorescent Materials

An efficient linear-scaling CCSD(T) method based on local natural orbitals

Zoltán Rolik、Lóránt Szegedy、István Ladjánszki 等 5 位作者2013-09-04The Journal of Chemical Physics

An improved version of our general-order local coupled-cluster (CC) approach [Z. Rolik and M. Kállay, J. Chem. Phys. 135, 104111 (2011)] and its efficient implementation at the CC singles and doubles with perturbative triples [CCSD(T)] level is presented. The method combines the cluster-in-molecule approach of Li and…

Advanced Chemical Physics StudiesMagnetism in coordination complexesMachine Learning in Materials Science

Rapid, Label-Free Detection of Brain Tumors with Stimulated Raman Scattering Microscopy

Minbiao Ji、Daniel A. Orringer、Christian W. Freudiger 等 17 位作者2013-09-04Science Translational Medicine

Surgery is an essential component in the treatment of brain tumors. However, delineating tumor from normal brain remains a major challenge. We describe the use of stimulated Raman scattering (SRS) microscopy for differentiating healthy human and mouse brain tissue from tumor-infiltrated brain based on histoarchitectur…

Gold and Silver Nanoparticles Synthesis and ApplicationsSpectroscopy and Chemometric AnalysesSpectroscopy Techniques in Biomedical and Chemical Research

Prediction of the Magneto-Resistance of La0.65Ca0.35MnO3 and La0.8Sr0.2MnO3 via Temperature and Magnetic Field

Ning Zhu、Ya Jie Liu2013-09-04Advanced materials research

The resistance associated with temperature and magnetic field is a crucial parameter in researching the physical properties of the Perovskite-type manganites. To find out a suitable method to predicting the resistance of La0.65Ca0.35MnO3 and La0.8Sr0.2MnO3 in the process from paramagnetic phase to the ferromagnetic ph…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics

The Development of Cement Composites Reinforced Coconut Fiber with Fly Ash Addition: Mechanical Properties and Fracture Behavior

Nur Izzati Muhd Nadzri、Shamsul Baharin Jamaludin、Mohd Noor Mazlee2013-09-04Advanced materials research

This research paper presents a study on the development of cement composites reinforced coconut fiber with fly ash addition. Various content of coconut fiber (3 wt. %, 6 wt. %, 9 wt. %, 12 wt. % and 15 wt. %) was added to the cement composites composition as reinforcement. Additions of 20 wt. % fly ash and 80 wt. % of…

Natural Fiber Reinforced CompositesInnovative concrete reinforcement materialsMasonry and Concrete Structural Analysis

The Effect of Iron Fillings Waste Contents on the Attenuation Level of Anti-Radiation Shielding Concrete

Ali Basheer Azeez、Kahtan S. Mohammed、Mohd Mustafa Al Bakri Abdullah 等 4 位作者2013-09-04Advanced materials research

Shielding concretes of different iron filling contents were assessed for their anti radiation attenuation properties. The measurements have been performed by using gamma spectrometer of NaI (Tl) detector, the sources were Cs137 and Co60 radioactive elements with photon energies of o.662 MeV, for Cs137 and the two 1.17…

Radioactivity and Radon MeasurementsRadiation Shielding Materials AnalysisGraphite, nuclear technology, radiation studies

Nanosize Effects on Magnetic Properties and Peak Shifting of X-Ray Diffraction Pattern of BaFe12O19 Produced by Sol Gel Method

Dwita Suastiyanti、Bambang Soegijono、Muhammad Hikam2013-09-04Advanced materials research

The formation of barium hexaferrite, BaFe12O19 single phase with nanosize crystalline is very important to get the best performance especially magnetic properties. The samples were prepared by sol gel method in citric acid-metal nitrates system. Hence the mole ratios of Ba2+/Fe3+ were varied at 1:12 and 1:11.5 with pH…

Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsX-ray Diffraction in Crystallography

High Temperature Oxidation Behavior of Co-Based Coating at 800o C as Alternative Coating Material for SOFC Interconnect

Asep Ridwan Setiawan、Rochim Suratman2013-09-04Advanced materials research

Cobalt based oxide are promising as coating material for solid oxide fuel cell interconnect due to their high oxidation resistance and conductivity. In this report, Co-based coating layer was deposited on AISI 430 ferritic stainless steel substrate using thermal spray methods. The high temperature oxidation behavior o…

Advancements in Solid Oxide Fuel CellsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Correlation of Normal Incidence Sound Absorption Coefficient (NAC) and Random Incidence Sound Absorption Coefficient (RAC) of Polyester/Ramie Fibre Composite Materials

Mohammad Farid、Tri Heriyanto2013-09-04Advanced materials research

The acoustical properties of polyester/ramie fibre composite materials that was applied as a sound absorbing material is discussed in this paper. The aim was to determine the correlation between Normal Incidence Sound Absorption Coefficient (NAC) and Random Incidence Sound Absorption Coefficient (RAC) of the fibre com…

Natural Fiber Reinforced CompositesAcoustic Wave Phenomena ResearchBamboo properties and applications

Impact of Controlled Hydrophobicity of the Organically Modified Silicates on the Properties of Biomedical Thermoplastic Polyurethane (TPU) Nanocomposites

Azlin Fazlina Osman、Peter J. Halley、Darren J. Martin2013-09-04Advanced materials research

The impact of nanofiller surface modifications and hydrophobicity on the morphology and mechanical properties of the biomedical TPU nanocomposites was studied. We show that incorporating nanofillers with higher hydrophobicity promotes better dispersion of nanofiller in TPU matrix due to greater interaction between the…

Polymer Nanocomposites and Propertiesbiodegradable polymer synthesis and propertiesPolymer composites and self-healing

Synthesis of Mesoporous Silica from Tetraethylorthosilicate by Using Sodium Ricinoleic as a Template and 3-Aminopropyltrimethoxysilane as Co-Structure Directing Agent with Volume Variation of Hydrochloric Acid 0.1 M

Andriayani Andriayani、Seri Bima Sembiring、Nida Aksara 等 4 位作者2013-09-04Advanced materials research

Synthesis of mesoporous silica from tetraethylorthosilicate (TEOS) by using sodium ricinoleic as a template and 3-aminopropyltrimethoxysilane (APMS) as a co-structure directing agents (CDSA) in a volume variation of acid addition has been carried out. Preparation of mesoporous silica was conducted in HCl 0.1 M at volu…

Zeolite Catalysis and SynthesisMesoporous Materials and CatalysisAerogels and thermal insulation