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 existence of the C2v symmetric closed-shell di[gold(I)]hydronium cation [Au2H]+ (1), is predicted. It is shown that 1 is the smallest possible molecular species containing aurophilic contacts. Equilibrium structural parameters, vibrational frequencies and formation energies of 1 from Au+ and AuH, have been calcula…
Research Articles| April 01 2009 Une nouvelle technique de mesure de la compressibilité de la peau et du tissu sous-cutané. Influence du sexe, de l'âge et du site de mesure sur les résultats Subject Area: Geriatrics and Gerontology S. Parot; S. Parot Centre de Gérontologie CI. Bernard et Département de Physiologie, Fa…
Single-phase Pr2CBr was prepared by heating a mixture of PrBr3, Pr and C (1 : 5:3) to 1140 °C for 18 d. The crystal structure was investigated by X-ray single crystal diffraction (space group P63/mmc, a = 3.8071(3), c = 14.7787(12) Å). In the structure the Pr atoms form C-centered octahedra condensed into Pr2C sheets…
Nanocrystalline Y1 − x − y Gd x Eu y PO4 phosphors have been prepared via precipitation from aqueous solutions. From their luminescence and excitation spectra, the intensity ratio I 615/I 594 of the Eu3+ luminescence bands corresponding to electric dipole and magnetic dipole transitions has been determined as a functi…
ZnCoO thin films were synthesized via a wet chemical route and subsequently annealed in Zn vapor to increase the conductivity by introducing Zn interstitials. All samples show small hysteresis loops close to the detection limit of the magnetometer. Thus the samples were thoroughly investigated to obtain evidence for f…
The effect of (I) S 1(1 B 2u ) ⇝ T 1(3 B 1u ) and (II) S 1 ⇝ T 2 (3 B 3g ) ⇝ T 1 transitions in naphthalene on the rate constant K ST of the S 1 ⇝ T 1 nonradiative transitions to all triplet sublevels s = z, y, x of the T 1 state has been investigated in the approximation of vibronically induced spin-orbit couplings,…
Silicon oxide nanowires synthesized during carbonization of polyimide thin film on a silicon substrate exhibited marked enhancement in photoluminescence (PL) at 420 nm by prolonging the growth period. Maximum intensity was recorded when the nanowire diameter coarsened from 70 to 165 nm by extending the growth period f…
Silicon wafers were exposed to a dielectric barrier discharge (DBD) at atmospheric pressure, which was ignited by applying a high voltage (>12 kV peak voltage) to a small gap (dg=300 μm) above the wafer surface in an oxygen process gas atmosphere. The effect of the DBD on H-terminated silicon and native silicon oxide…
Effect of TiO 2 nanoparticles on anticorrosion property in amorphous Ni
Fuel cycle system analysis simulations examine how the selection among fuel cycle options for reactors, fuel, separation, and waste management impact uranium ore utilization, waste masses and volumes, radiotoxicity, heat to geologic repositories, isotope-dependent proliferation resistance measures, and so forth. Previ…
beta2-Microglobulin (beta2-m) forms amyloid fibrils in patients undergoing long-term hemodialysis. K3 peptide, a Ser20-Lys41 fragment of beta2-m, has been known to form fibrils over a wide range of pH and solvent conditions. Recent solid-state NMR has revealed that K3 oligomer adopts a parallel U-shaped beta-strand-tu…
The problems and paradoxes of the Lifshitz theory in application to real dielectric and semiconductor materials are reviewed. It is shown that the inclusion of drift current of conduction electrons into the model of dielectric response results in contradictions with both thermodynamics and experimental data of differe…
Research Articles| April 01 2009 Elastin, Biosynthesis and Structure Subject Area: Geriatrics and Gerontology S.M. Partridge S.M. Partridge Meat Research Institute, Langford near Bristol Search for other works by this author on: This Site PubMed Google Scholar Gerontologia (1969) 15 (2-3): 85–100. https://doi.org/10.1…
Research Articles| April 01 2009 Comparative Studies of Age Tests on Collagen Fibres Subject Area: Geriatrics and Gerontology Maria Boros-Farkas; Maria Boros-Farkas Institute of Experimental Gerontology, Basel Search for other works by this author on: This Site PubMed Google Scholar A.V. Everitt A.V. Everitt Institute…
Research Articles| April 01 2009 The Stabilization of the Intermolecular Crosslinks of Collagen with Ageing Subject Area: Geriatrics and Gerontology A.J. Bailey A.J. Bailey Agricultural Research Council, Meat Research Institute, Langford, Bristol Search for other works by this author on: This Site PubMed Google Schola…
采用聚环氧丙烷双氨丙基醚(NH2-PPO-NH2)作为大分子引发剂引发γ-谷氨酸苄酯-N-羧基内酸酐(BLG-NCA)开环聚合, 在碱性条件下通过水解脱保护反应, 合成了含多肽的全亲水性三嵌段聚合物PLGA-b-PPO-b-PLGA. 该聚合物同时具有pH和温度响应性的多重胶束化性质, 并且在胶束化过程中同时伴随着无规线团与α-螺旋结构之间的构象转变. 通过核磁共振谱(1H NMR)、激光光散射(LLS)、变温透过率和圆二色谱(CD)等测试手段对该含多肽杂化三嵌段聚合物的胶束化行为进行了详细的研究.
Emulsions are usually generated in high-pressure homogenization chambers. The flow field is these units are typically highly turbulent and chaotic, and mechanisms for drop formation under these conditions are not well understood. In this paper, we have applied the PBE modeling approach to droplet break-up in a high pr…
Eco-debinding process using supercritical extraction of low molecular organic binders in nano-porous ceramic bodies was examined. The debinding properties related to structural changes during supercritical extraction and conventional solvent extraction were also compared. The debinding rate of supercritical extraction…
The possibility of anionic copolymerization of ω-dodecalactam, ɛ-caprolactam, and ɛ-caprolactone in the presence of catalytic amounts of sodium caprolactamate and 2,4-toluene diisocyanate as activator was examined.
A pair of magnetic domain walls (DWs) in ferromagnetic NiFe rings has been investigated in terms of the magnetic force microscopy (MFM). When the distance between the rings d is greater than a threshold value dth, MFM signals indicate that a DW in the ring is dragged due to a stray magnetic field from an MFM probe tip…