Materials Literature
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We report high-efficiency CdTe/CdS core/shell nanocrystals synthesized in water by epitaxially growing CdS shells on aqueous CdTe cores at room temperature, enabled by the controlled release of S species under low-intensity ultraviolet （UV） light illumination. The resulting photo-induced dissociation of S2O2- ions con…
药的差的水的溶解度是在药品的科学的主要挑战之一。在这研究，包含 guanidinium 聚合物基于精氨酸被设计并且综合，并且作为为三模型有机化合物(香豆素，分核和 doxorubicin ) 提高添加剂的溶解度被评估。在 100   的 guanidinium 组集中； mmol/L，聚合物能显著地分别地由 6 褶层和 11 褶层增加分核和 doxorubicin 的溶解度，比精氨酸更有效(2-fold, 和 3 褶层，分别地) 。相反，它香豆素的溶解度上的效果不比精氨酸有效。增溶的效果可以被在 guanidinium 组之间的提高的相互作用在聚合物和芳香的混合物解释。
Molecular detection techniques based on localized surface plasmon resonances shift,surfaced-enhanced Raman spectroscopy,surface-enhanced fluorescence,and plasmon resonance energy transfer are all highly dependent on the intensity of localized electromagnetic fields[1-4].Many different nanostructures were fabricated fo…
XANES and EXAFS spectra in operando condition have been recorded at the XAFS beamline on the most active material, the copper hexacyanoferrate cathodes for lithium batteries. The beam time session was not extremely successful because of problems due to the machine and beamline, and to a cell short circuit. At least a…
The present study investigated the chemical constituents of the roots of Stellera chamaejasme(Thymelaeaceae).One new biflavone glucoside(1),along with other thirteen known compounds(2–14),was isolated by repeated column chromatographic methods and their structures were elucidated on the basis of spectral analyses.The…
The affine Coxeter group(_3,S) can be realized as the fixed point set of the affine Coxeter group(D_4,S) under a certain group automorphism α with α(S) = S.Let be the length function of D_4.We gave an explicit description for all the left cells of the weighted Coxeter group(_3,).Also,we showed that in the the wei…
Chemical treatments are widely employed to improve the fiber-matrix adhesion in composites based on eco-friendly fibers such as flax. To better understand the influence of these treatments on processing behavior, this study characterized the surface chemistry and morphology of woven flax fabrics treated by acetone, al…
In this paper,fast multiple rotation rolling( FMRR) is applied to fabricate a nanostructured layer on the surface of steel 45. The FMRR samples are then Cr-Rare earth-boronized under low-temperature. The boride layer is characterized by using Scanning electron microscopy( SEM) and X-ray diffraction( XRD).Experimental…
A burnup calculation was performed to analyze the Apr`es ORIENT process, which aims to create highlyvaluable elements from fission products separated from spent nuclear fuels. The basic idea is to use nuclear transmutation induced by a neutron capture reaction followed by a β-decay, thus changing the atomic number Z o…
A Ag-glass fiber composite was prepared by a two step process i.e. the glass fibers were pre-plasma treated and then dipped in a nano-Ag suspension. Results of SEM, AFM and XRD examinations indicate that Ag coating on the glass fiber has good overall properties with well uniform appearance.In comparison with the conve…
Objective: To evaluate the feasibility of dynamic contrast-enhanced magnetic resonance imaging(DCEMRI) for predicting tumor response to radiotherapy in patients with suspected primary central nervous system(CNS) germ cell tumors(GCTs).Methods: DCE-MRI parameters of 35 patients with suspected primary CNS GCTs were obta…
Nanoporous gold （np-Au） is an emerging nanostructured material that exhibits many desirable properties, including high electrical and thermal conductivity, high surface area-to-volume ratio, tunable pore morphology well-established surface-binding chemistry, and compatibility with microfabrication. These features make…
The microwave properties of Z type Ba hexagonal ferrites with uniaxial anisotropy can be controlled over a wide range by choice of an appropriate mixture of Zn, Ni, and Co as divalent species. Using unmagnetized powders of these ferrites, the microwave permeability spectra were taken in a swept frequency mode in the t…
In this paper, effects of magnetic heat treatment (MHT) on structure and hydrogen permeation properties of Nb49Ni25Ti26 alloy membrane have been investigated. XRD and SEM were employed to char acterize its phases and microstructure. Also, hydrogen diffusion coefficients (DH) of the alloy membrane were measured in Deva…
Using reduced oxide graphene( RGO) as precursor,the monodispersed spherical graphene quantum dots( GQDs) with uniform size were prepared by one-step hydrothermal method.The morphology,structure and optical properties of the samples were characterized by TEM,AFM,FTIR,UV-visible spectroscopy and photoluminescence spectr…
The resistivity of Hg0.89Mn0.11 Te has been measured by the superconducting quantum interference device magnetometer in the temperature range from 5 to 200 K under the applied magnetic field of 1, 2, 4 and 6.5 Tesla, respectively, compared with that of no-magnetic field. The results show that the resistivity increases…
The surface property of colloidal nanosilica(SiO2) nanospheres is regulated by modification with organoalkoxysilane, such as mercapto propyl trimethoxysilane (MPTMS), 3-aminopropyl trimethoxysilane (APTMS),phenyl trimethoxysilane(PTMS), 3-(phenylamino) propyltrimethoxysilane (PAPTMS). The surface of silica is hydrophi…
Copper (Cu)-bearing stainless steel with release of Cu 2? ions is a novel material for coronary stents that could reduce the in-stent restenosis after the stent implan- tation. The inflammation has been recently recognized as an important factor to smooth muscle cells proliferation, thrombosis, and hence the restenosi…
)作为原料。FSEM， TEM， HRTEM， SAED， XRD， FTIR 和拉曼， ICPAES，激光粒子尺寸分析器，氧和氮分析器，碳 / 硫 determinator 和 TG-DSC 为形态学，结构，化学作文和同样综合的 ZrC 样品的热稳定性的描述被采用。同样综合的样品与 50nm 的一种平均粒子尺寸表明了高纯净，低氧内容和均匀地分布式的 ZrC nano 粉末。另外，吸热的率的效果和可能的化学反应机制也被讨论。
In this paper, we reported a solvothermal method for the synthesis of octahedral Pt-Cu bimetallic alloy nanocrystals (NCs) with tunable composition. Inspired by the result from our previous exploration on octahedral Pt-Cu alloy NCs that Cu contents can be tuned from 10 % to 50 %, we further tuned the Cu portion from 5…