To evaluate emergency traffic warning, it is necessary to establish a set of accurate, concise, easy operation indexes system. Influence of unexpected events on transportation system is complex, involving many indexes, the early warning evaluation calculation is complex, and calculation accuracy is not...

The aim of this study was to investigate the phytotoxicity of Fe2O3 nanocubes, Fe2O3 short nanorods, Fe2O3 long nanorods, TiO2 NPs; and MWCNTs to rice (Oryza sativa L.) seedlings during germination, including rice germination ratio, root length, shoot length and fresh weight. Our investigation found...

Carbon nanofibers (CNFs) exhibiting a large surface area and structural stability can provide high electrochemical performance in dye-sensitized solar cells (DSSCs). The effect of CNFs layer thickness on the performance of the DSSCs was researched by cyclic voltammetry (CV), and Tafel polarization measurements....

We have successfully obtained highly isolated Co2+ active sites on the surface of titanate nanotubes (TNTs) by a simple ion-exchange process. The as-prepared Co-TNTs were applied in heterogeneous catalysis to generate powerful radicals from peroxymonosulfate (PMS) for the removal of recalcitrant pollutant....

An eco-friendly approach for the preparation of silver nanoparticles (AgNPs) from silver nitrate solution using aqueous Eriobotrya japonica seed extract was investigated. The reduction of silver ions in solution was monitored using UV-vis spectroscopy, and the surface plasmon resonance of AgNPs at 428...

Nanocomposites reinforced by carbon nanotubes exhibit great advantages in engineering applications. The waviness of nanotubes is one of the important factors which affect the effective elastic modulus of nanocmposites. This paper aims to develop a new model to replace the wavy carbon nanotubes with effective...

Vertically aligned carbon nanotubes (VACNTs) grown on metal substrates are of great importance for their applications in thermal and electrical devices. However, synthesizing better quality and long CNTs on metal substrates is still a big challenge. We have synthesized vertically aligned multiwalled...

The thermal decomposition process of magnesite significantly affects the catalytic activity of MgO. The structure, stability and growth strategies of the (MgO)n (n = 1-13) clusters were investigated by density functional theory. From reaction energy it can be seen that the contributions of the small...

To improve the anti-crack performance of Al-Cu alloys, the geometries, relative stability as well as growth strategies of AlnCu (n=1-9) clusters were investigated with spin polarized density functional theory: BLYP. The results reveal that the Cu atom tends to convergence aluminum clusters to close-packed...

Nanoindentation has been widely used to determine the mechanical properties of pristine and polycrystalline graphene in experiments. To investigate the effects of grain size on the mechanical properties of polycrystalline graphene, we use molecular dynamics simulations to study the nanoindentation response...

A series of nanostructured Zn2GeO4 were prepared in a low temperature solvothermal process and characterized with transmission electron microscopy and X-ray diffraction. Then, the formation mechanism of nanostructured Zn2GeO4 was discussed. At last, their electrochemical behavior was investigated. The...

Ag/Cu bimetallic nanoparticles were synthesised in a few minutes using 1-heptanol as reducing agent in a microwave reactor. The products of microwave heating and oil-bath heating were compared. Experimental results decide that, it is easier to obtain a higher degree of crystallization, smaller size distribution...

The SiO2 microspheres with different diameters were prepared by a seeding technique through adjusting the mass fraction ratio of TEOS and silica sol in the reaction solution. The mesoporous SiO2/Fe3O4 microspheres with size-tunable hollow cavity were prepared by using the SiO2 microspheres of different...

Monodisperse Fe3O4 Nano particles have been successfully synthesized by solvothermal method using water and ethylene glycol as solvents, and their sizes could be controlled by changing the ratio of water to ethylene glycol. Subsequent surface modification of Fe3O4 had been carried out using tetraethyl...

Ti2O(PO4)2·2H2O nanobelts were successfully synthesized by a simple, template and surfactant-free hydrothermal method,in which titanium sulfate(Ti(SO4)2) and concentrated phosphoric acid (H3PO4) were used as titanium and phosphorus source, respectively. The synthesized materials were characterized by...

Aptamer becomes a novel biosensor for detection of small chemical molecules, biological molecules, and cells. The integrating of aptamer biosensors with microfulidic chip for detection have attracted much attention due to their advantage of miniaturization, sensitivity and high specifity. Microbial detection...

Anatase TiO2-graphene (ATG) nanocomposites were prepared via a facile one-step solvothermal method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Raman spectra and transmission electron microscopy (TEM). During the solvothermal reaction, anatase...

The magnetic control tunable characteristics of localized modes of One-dimensional Cantor quasicrystal structure containing nanoparticle magnetic fluid is studied by using the transfer matrix method. First, the physical model of One-dimensional Cantor quasicrystal structure containing nanoparticle magnetic...

In order to investigate the effects of several nano combustion modifiers (nm-DPT, nm-CB and nm-Al) on the combustion properties of DB/Al-CMDB/RDX-CMDB propellants, the propellant samples were prepared through a solventless extrusion technique. The burning rates of propellants were measured by the strand...

Micrometer scale hollow ZnO dandelions organized by ZnO nanorods were prepared by single-step hydrothermal process. The diameter of the nanorods with the pencil shape tip is estimated to be 150-500nm. The length of the nanorods is more than 2 m. Structure analysis indicated that the as-prepared products...

Polyaniline/Carbon Nanotube (PANI/CNT) composite films doped with dodecyl benzene sulfonic acid were synthesized by cyclic voltammetry on an ITO-deposited polyethylene terephthalate substrate. The SEM and FTIR were used to characterize the micro-morphology and chemical structure. The effect of CNT concentration...