Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The right determination of friction conditions at the tool-workpiece interface is a key aspect to take into account when simulating metal forming processes, and especially in incremental forming ones. In this work, the ring compression test is used in order to determine friction calibration maps for different metal al…
Efficient delivery of biomolecules to cells is of great importance in biology and medicine. To achieve this, we designed a novel type of densely packed diamond nanocone array to conveniently transport molecules to the cytoplasm of a great number of cells. The nanocone array was fabricated by depositing a thin layer of…
A variety of new inorganic compounds have been prepared by hydrothermal reaction and their crystal structures were determined by single crystal X-ray diffraction or powder neutron diffraction data. They are divided into three groups; i) transition metal oxides, ii) zirconium phosphates and iii) bismuth oxides. Most of…
The development of clean water production heavily relies on membrane technology. In this study, a novel flexible nanostructured membrane consisting of hierarchical mesoporous TiO2 sphere and sulfonated graphene oxide (GO–SO3H) was successfully designed and fabricated for the first time. This membrane shows enhanced st…
Formal substitution of the central carbon by silicon within the tetrahedral tetrakis(4-tetrazolylphenyl)methane linker in a copper-based MOF is shown to uniquely influence the structure of the resultant MOF, affecting the orientation of the metal-based nodes and leading to an increase in unit-cell volume and solvent a…
The spatial distribution of a reaction through a lithium-ion battery electrode has been resolved using micro-beam high-energy X-ray scattering measurements coupled with Pair Distribution Function (PDF) analysis. The electrochemical reaction was most advanced at the interface between the electrode and electrolyte-soake…
KFeSO4F was recently reported as a cathode candidate for the removal and insertion of Li+, Na+ and K+. Here the mechanism for the electrochemical extraction of K+ from KFeSO4F is unveiled using density functional calculations. Consistent with experimental observations, first-principles calculations predict a thermodyn…
BACKGROUND: Porphyrin derivatives have been widely used in photodynamic therapy as effective sensitizers. Protoporphyrin IX (PpIX), a well-known hematoporphyrin derivative component, shows great potential to enhance light induced tumor cell damage. However, PpIX alone could also exert anti-tumor effects. The mechanism…
The scuffing process was in-situ observed in a sliding contact between a rotating sapphire disc and a stationary steel ball under dry condition and lubricated condition. The in-situ observations indicate that under both dry condition and lubricated condition scuffing is initiated as a result of the accumulation by wea…
Human calcitonin (hCT) is a 32-amino acid peptide hormone that contains an intrachain disulfide bridge between Cys1 and Cys7 and a proline amide at the C-terminus. hCT tends to associate to form a fibril precipitate of the same type as amyloid fibrils, and hence has been studied as a model of amyloid fibril formation.…
In this study, the brittle-ductile transition in nanometric machining of mono-crystalline silicon with precise tool specifications and parameter choices is accessed. Due to its brittle nature, silicon material requires a ductile-mode machining for improved surface quality. Molecular dynamics (MD) methods are thus appl…
Raman spectroscopy and surface enhanced Raman spectroscopy (SERS) have many attributes that make them attractive for field detection of environmental contaminants, industrial process control, as well as materials detection/identification in agriculture, pharmaceuticals, law enforcement/first responders, geology, and a…
Three step chemical tweaking of nonfluorescent parent GFP chromophore has yielded a three hundred times as bright coumarinic fluorophore. A fluorogenic compound has been prepared which after photo-uncaging yields the same highly bright fluorophore that could be used for live stem cell imaging.
Copper oxide nanoparticles were anchored on sodium dodecyl sulphate (SDS)-functionalized macroporous carbon by utilizing the supramolecular self-assembly of SDS acting as a soft template. The as-prepared composite provides new features of electrocatalytic activities and may hold great promise for the design of environ…
In order to graft cyanoaromatic molecules onto various inert supports, we designed two new cyanoanthracene derivatives of benzo[b]triphenylene-9,14-dicarbonitrile (DBTP, 1), which already demonstrated good photosensitizing properties. We synthesized 3-(N-hydroxypropyl)carboxamido-9,14-dicyanobenzo[b]triphenylene, 3 an…
The syntheses, structures and photophysical characterizations of new tris-chelated Zn(II) ionic complexes based on substituted bipyridine ligands (L1 = 4,4′-bis(hydroxymethyl)-2,2′-bipyridine; L2 = 4,4′-bis(methoxy)-2,2′-bipyridine) are reported. Owing to the different hydrogen bonding ability and steric hindrance of…
To evaluate antiulcer potential of aqueous extract of Madhuca indica (M. indica) J. F. Gmel leaves in rats. Aqueous extract of M. indica J.F. Gmel leaves was tested at the dose of 100, 200 and 400 mg/kg, p.o. against naproxen (30 mg/kg, p.o) induced gastric ulcer. Omeprazole (30 mg kg, p.o.) was used as a positive sta…
Explosive spalling is generally considered to be caused by concrete fracturing due to the interaction of (a) the pore pressure induced by moisture transport and vaporization and (b) the stress induced by thermal gradients and external loads. In order to investigate the first point, a special setup has been designed an…
How intrinsically disordered proteins and regions evade degradation by cellular machinery evolved to recognize unfolded and misfolded chains remains a vexing question. One potential means by which this can occur is the disorder is transient in nature. That is, the disorder exists just long enough for it to be bound by…
Fe3O4–Ag dimers and multimers with tunable Ag domains and magnetic properties were prepared by a seeding growth method. The reaction mechanism based on the attraction between Ag precursor and Fe3O4 particles as well as the migration of adsorbed Ag species towards the initially deposited Ag domain was proposed to expla…