Search results

Electrocatalysis and sensitive determination of Sudan I at Fe3O4/graphene modified glassy carbon electrodes Suxing Luo1, a, Yuanhui Wu 1,b and Hua Gou1,c 1Department of Chemistry, Zunyi Normal College, Zunyi, Guizhou Province, 563002, China asuxingluo@126.com, bwuyuanhuil@126.com, cgouhuazy@126.com Keywords: Sudan I. iron oxide. graphene. glassy carbon electrode. electrochemistry Abstract: The iron oxide/graphene (Fe3O4/rGO) nanocomposite modified electrode and the electrochemical properties of Sudan I were investigated.
For electrochemical determination Sudan I, the modified material is a key factor, which can effect the determination sensitivity and selectivity.
Graphene often exhibits extraordinary electronic, conductive, and mechanical properties.
Recently, magnetic Fe3O4 nanoparticles have attracted many interests due to their special attributes, such as magnetic properties, optical properties, low toxicity, biocompatibility, easy preparation and high adsorption ability.
The results indicated that for 0.05 μM Sudan I, at least 200-fold of Cu2+, Mg2+, Ca2+, Na+, K+, NO2-, SO42-, and 100 times of capsanthin, capsorubin, zeaxanthin, cryptocapsin, cryptoxanthin, capsanthin diacetate; 100-fold concentration of 4-nitrophenol, 4-chlorophenol, phenol did not affect the determination of Sudan I.

In this paper, the relevant risk factors of the analysed weather condition were determined based on our expert judgements and the available insurance databases.
The factors of exposure are the natural hazards, e.g. extreme weather events (characteristics: frequency, intensity, location, extent).
The exposure to windstorms, the effects of wind on the building envelope depend on the height, the shape and the dynamic properties of the façade and roof structure as well as its location, the height variation of the wind determined from the terrain roughness and orography.
The wind-related sensitivity is defined as what extent, the wind pressure affects the building.
Since the date of construction determines more factors it was weighed by the highest value and the sensitivity values were identified on a three-grade scale.

SiO2 modification produces hydrophobic properties which increase corrosion resistance.
The properties of SiO2 are shown in Table 2 [53].
Hydrophobic properties can increase anti-corrosion ability [50].
The main parameters affecting the reaction are the ratio of water to alkoxide, the type and amount of catalyst, the type of organic group attached to the M atom (metal), and the solvent.
The quality and characteristics of the film produced through the coatings applied using the EPD method are influenced by (1) factors related to suspension and (2) process [19].

It is difficult to directly quantify the various indicators, which makes the estimate a great variety of subjective bias, and then affects the feasibility of decision-making results.
Based on in-depth analysis of practical problems, the related factors are decomposed of several top down levels in accordance with different properties.
Factors of the same level belong to those of the upper layer or influence the upper layer factors, at the same time, dominate the factors of the lower layer or be influenced by the lower layer factors, while factors of the same level are independent from each other as much as possible.
Whether the interval number comparison matrix meets the consistency of the results directly affects the sort of rationality.
Managers should pay more attention to the above factors.

The mechanical behavior of ceramic matrix composites with continuous fiber reinforcement depends not only on the intrinsic properties of the fiber and the matrix, but also on the fiber-matrix bonding.
The pressure in the reactor was monitored with a capacitance manometer and controlled at 5 torr with a throttle valve located between the reactor and the mechanical pump.
Therefore, the nature of the interface between the fibers and the matrix is one of the key factors for determining the material performance in fiber reinforced composites [1].
The thickness and the constituent of the interlayer significantly affect the properties of fiber reinforced composite [8].
Considering the matrix filling behavior and the flexural strength, the SiC whisker growing assisted method should be a promising technology for the fabrication of SiCf/SiC composites with improved properties.

Xue [3] found that with a certain base metal, weld heat input was an important factor influencing the toughness of CGHAZ, that under different weld heat input, the microstructure type, morphology, size and distribution in CGHAZ were different which behaved as different properties; C.L.
Experimental Material and Method The thickness of two industry single-furnace trial X90 pipeline steels is 16.3mm, and the chemical composition and mechanical properties are shown in Table1 and Table2.
C Si Mn P S Cr Mo Ni Al Cu Nb Ti V N Ceq 1# 0.05 0.19 2.05 0.008 0.002 0.35 0.31 0.41 0.038 0.26 0.086 0.012 0.013 0.004 0.57 2# 0.04 0.24 1.8 0.009 0.003 0.295 0.295 0.244 0.031 0.22 0.099 0.013 0.004 0.006 0.48 Table 2 Mechanical properties of X90 pipeline steel.
As is shown in Table2, the industrial trial X90 pipeline steel has excellent overall mechanical properties.
Conclusions (1) The industrial trial X90 pipeline steel has excellent combination properties and the mechanical properties of both 1# and 2# steel are superior to standard requirements.

The average pore diameter of alumina increases linearly with applied voltage, with proportionality factor lp 0.83 nmV-1.
Besides purity of aluminum, however, the concentration and temperatures of electrolyte, applied voltages, anodizing stages, sample pre- and post heat treatments determined the properties of final products.
Addition of ethylene glycol in electrolyte during fabrication of porous anodic alumina using AA1050 achieved a breakthrough properties of the final products.
The applied voltage affect the dissolution rate of oxide through field-assisted process.
The average pore diameter of alumina increases linearly for applied voltage of 24-30 V, with proportionality factor lp 0.83 nmV-1.

Porous wide bandgap semiconductors have been widely studied in the last decade due to their unique properties compared to the bulk crystals.
GaN received attention from the researchers as an ideal material to fabricate chemical sensing devices due to its excellent properties such as high thermal, mechanical and chemical stabilities, large band gap and high breakdown voltage.
The structural properties was characterized using Scanning Electron Microscope (SEM).
For metal contacts to GaN, the condition of the surface is a key factor in determining the electrical properties.
High quality of Schottky contacts have been key factors in improving performance and reliability.

The experimental results showed that the size of the surface texture, compared with that of abrasives, is the main factor which determines the friction coefficient.
For a mechanical system, friction occurs when both surfaces are in contact and a relative displacement happens.
DongJun kim, et al, combined surface texturing and PVD hard coatings to improve tribological properties [12].
Recently, some groups tried to to investigate surface texture with mechanical simulation.
Over the past two decades, a great deal of effort has been made to build a function that can optimize the mechanical properties of materials.

Overall, the process parameters of the deposition methods, powder concentration in the coating, pre/post surface treatments, and the fluid medium are the most influential factors affecting surface wettability and its response to the biological environment.
Biomaterials for orthopedic applications and techniques to improve corrosion resistance and mechanical properties for magnesium alloy: a review.
Evaluation of modified 316L surface properties through HAp suspended EDM process for biomedical application.
The effect of patterned titanium substrates on the properties of silver-doped hydroxyapatite coatings.
Mechano-tribological properties and in vitro bioactivity of biphasic calcium phosphate coating on Ti-6Al-4V.