Materials Literature
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Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
Recent progresses in analytical methods associated with combinatorial chemistry have been summarized in several recent reviews (Egner and Bradley 1997; Gallop and Fitch 1998; Balkenhohl et al. 1997; Deben et al. 1998; Shapiro et al. 1997; Yan 1998; Yan and Gremlich 1999; Schneider and Anslyn 1999; Gillie et al. 2000;…
The details of the domain structure of the incommensurate antiferroelectric structure in La-doped zirconium-rich lead zirconate titanate have been revealed in detail for the first time. The structure is dominated by 60° domain boundaries close to {101} planes of the primitive perovskite cell; and tilts of the perovski…
International audience
为降低早期投运的电站燃煤锅炉的NOX排放, 提出了在运行过程中优化炉内配风的运行方式, 该方式不仅简单易行, 而且成本低。试验发现:随着炉内总风量的上升, NOX的排放也随之增加, 但其经济性有所降低, 确定炉内总风量要兼顾锅炉的经济性和排放特性。在总风量确定的前提下, 进行二次风和燃尽风的优化配风可以进一步降低NOX的排放, 若中层二次风的通风量较小, 而上、下层二次风的通风量较大, 相应NOX的排放较低;一、二次风配比确定后, 增加燃尽风的份额也可以有效降低NOX的排放。文中提出的优化运行方式可以有效地降低NOX的排放, NOX的排放从908 mg/m3下降至790 mg/m3。
Frumkin-Derjaguin theory of interfacial phase transitions and in particular the concept of the disjoining pressure of a planar adsorbed film is reviewed and then discussed in terms of statistical mechanical formulations of interfacial phase transitions beyond mean-field.
Understanding how the orbital motion of electrons is coupled to the spin degree of freedom in nanoscale systems is central for applications in spin-based electronics and quantum computation. We demonstrate this coupling of spin and orbit in a carbon nanotube quantum dot in the general multi-electron regime in presence…
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionAssessing the Role of Poly(ethylene glycol-bl-propylene sulfide) (PEG-PPS) Block Copolymers in the Preparation of Carbon Nanotube Biocompatible DispersionsErika Maria Di Meo, Antonello Di Crescenzo, Diana Velluto, Conlin P.…
Kenaf (Hibiscus cannabinus)is an annual non-wood plant which has shown great potential as an alternative source of papermaking fiber. The purpose of this research was to investigate the suitability of Malaysian cultivated kenaf fibers in the production of high quality printing paper. The first part of the research cha…
Palmitoyl glycol chitosan is an amphiphilic polymer with a hydrophilic backbone (made up of glycol chitosan molecules) bearing a pendant hydrophobic chain palmitic acid attached at the C-2 position on its hydrophilic back bone. Quaternary ammonium palmitoyl glycol chitosan is a quaternised derivative of the palmitoyl…
An alternative to a needle for penetrating cells may be found in the precise and forceful fluid jet created by two bubbles expanding and collapsing in tandem.
International audience
Details of the design, fabrication, and characterization of silicon-on-insulator (SOI) nanophotonic devices are presented.Shallow etched rectangular profile gratings are demonstrated to couple free space light into planar SOI waveguides with efficiencies exceeding 20%.Parabolic planar solid immersion mirror (PSIM) cou…
Telah dilakukan lanjutan penelitian berupa uji kekerasan Vickers dan karakterisasi struktur mikro functionally graded materials (FGMs) α-Al2O3/Al2TiO5-MgO menggunakan vickers hardness tester, SEM EDX. FGMs disintesis dari serbuk α-Al2O3 sebagai prakeramik dengan MgO (0 wt%, 2 wt%, 5 wt%) sebagai penstabil yang kemudia…
Fiberglass Reinforced Plastic (FRP) adalah salah satu material yang sering digunakan sebagai alternatif pengganti baja pada pembangunan kapal. Sifat Naturfiber Reinforced Plastic (NRP) yang ringan, tahan terhadap korosi dan lebih ramah lingkungan menjadikan material ini diminati sebagai bahan alternatif dalam pembuata…
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Nucleic acid biosensors have been found to have interesting possibilities for applications in various fields including environmental and medical screening. The two types of analysis used for the nucleic acid biosensors are : (a) detection of genotoxicants/ DNA damage (b) detection of DNA hybridization. For the detecti…
In recent years, coinage metal nanoparticles have emerged as materials with largest quadratic optical nonlinearity. Their first hyperpolarizabilities (β) are very high (105-106 x 10-30 esu) but such large values were quite unexpected because of their apparently centrosymmetric bulk structure. Only a small second harmo…
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The oscillation of the four-probe electric resistance of monatomic carbon chains as a function of electron energy was theoretically analysed on the basis of non-equilibrium Green's function formalism and the self-consistent charge density-functional tight-binding method. We constructed spectra from the spacing of the…