Study on noise in simultaneous geomagnetic difference data caused by the effect of S q local-time variation

Ren, Xiaomin

doi:10.1007/s11589-001-0087-2

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…The finer grain size would greatly improve resistance of thin film to microfracture. Additionally, as has been reported previously, the presence of SiO 2 can greatly increase the adhesion and mechanical stability of thin film on substrates, which is a key issue in device reliability [17]. All these effects contributed to the excellent antiwear and friction-reduction performance of mutually soluble TiO 2 -17.9SiO 2 film over pure TiO 2 film in sliding against Si 3 N 4 under low load.…”

Section: Resultssupporting

confidence: 54%

“…TiO 2 -17.9SiO 2 film shows better resistance to microfracture and is smoother than that of TiO 2 film. Moreover, the embed SiO 2 may improve the adhesion and mechanical stability of thin film on glass [17], which are all possibly responsible for the better tribological performances of TiO 2 -17.9SiO 2 film. Differently, the TiO 2 -25SiO 2 film shows shorter wear life than pure TiO 2 film because the addition of excessive SiO 2 into TiO 2 film seriously deteriorates wear resistance, which in agreement with the previous findings [9].…”

Section: Resultsmentioning

confidence: 99%

“…The addition of La 2 O 3 , CeO 2 , CuO, Fe 2 O 3 , SiO 2, or other oxides into anatase TiO 2 can improve the thermal stability and prevent the growth of titania grains [16]. Additionally, according to previous reports, the presence of some dopants could increase the adhesion and mechanical stability of thin film on substrates, which are a key issue in device reliability [17]. However, little work has been done on the influence of these dopants on tribological properties of the sol-gel TiO2 films.…”

Section: Introductionmentioning

confidence: 99%

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Tribological properties of anatase TiO2 sol–gel films controlled by mutually soluble dopants

Jia

Zhang

et al. 2006

Tribol Lett

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Tribological properties of TiO2 sol-gel thin films with mutually soluble dopants were studied on a glass substrate. The results showed that the formation of mutually soluble solid solution played a very important role in the growth of titania grains. The finegrained TiO 2 films controlled by SiO 2 dopant were superior to pure TiO 2 film in wear resistance and endurance life, although both films greatly improve the surface characteristics of glass substrate, enhancing its tribological characteristics. High resistance to microfracture because of the very small grain size as well as a good adhesion of the film to the substrate is believed to be the determining factors influencing the tribological properties of SiO 2 doped TiO 2 films. However, excessive SiO 2 seriously deteriorates wear resistance of film due to phase separation. The wear mechanisms were also discussed based on the observation of the surface morphologies by scanning electron microscope (SEM).

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Section: Resultssupporting

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tribological properties of anatase TiO2 sol–gel films controlled by mutually soluble dopants

Jia

Zhang

et al. 2006

Tribol Lett

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“…The IL AmimCl was synthesized according to our previous work. 25 4-Nitrophenyl isocyanate and 4-methoxyphenyl isocyanate were purchased from Sigma Aldrich. 2-Fluorophenyl isocyanate, 4-fluorophenyl isocyanate, 4-chlorophenyl isocyanate, 2-tolyl isocyanate and 4-tolyl isocyanate were obtained from Alfa-Aesar.…”

Section: Experimental Materialsmentioning

confidence: 99%

Homogeneous synthesis of partially substituted cellulose phenylcarbamates aiming at chiral recognition

Chen

Zhang

Feng

et al. 2015

Polymer International

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Homogeneous carbanilation of cellulose with nine kinds of substituted phenyl isocyanates, in which the substituents were varied from electron-donating to electron-withdrawing groups, was carried out in 1-allyl-3-methylimidazolium chloride (AmimCl) without any catalyst. The degree of substitution (DS) of cellulose phenylcarbamates in a range from 0 to 3 was readily controlled by altering reaction temperature, reaction time and molar ratio of phenyl isocyanate/anhydroglucose unit. Furthermore, the electronic effect of the substituents on the aromatic ring had a prominent impact on the reactivity of phenyl isocyanates. The phenyl isocyanates with stronger electron-withdrawing substituents exhibited a higher reactivity. A plot of DS and Hammett substituent constants exhibited linearity with a positive slope. Subsequently, four kinds of partially substituted cellulose phenylcarbamates with DS of 2.0 were synthesized successfully in AmimCl, and then employed as coated-type chiral stationary phases (CSPs) for high-performance liquid chromatography. The enantioseparation results demonstrated that these CSPs exhibited high chiral recognition abilities for some racemates. The substituents on the phenyl moieties had a considerable effect on the chiral recognition ability of cellulose phenylcarbamate-based CSPs.

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“…In the process of modeling, different types of elements such as SOLID, BEAM and SHELL are applied to analog each parts. On the premise of fully consideration of precision [8], the model has been divided into 386780 grids. The finite-element model is shown in Fig.…”

Section: Computational Modelmentioning

confidence: 99%

Analysis and Calculation of Seismic Performance for UHV Equipment of HGIS

Shi¹,

Xu²,

Zhou³

et al. 2012

AMM

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In order to analyze and understand the seismic performance of UHV HGIS, and further improve it, the analysis of dynamic characteristics and seismic response spectra for 1100kV HGIS was carried out in four kinds of seismic waves, and then acquired structural frequencies and mode features. The situation that the natural frequency of UHV equipment and the main frequency of seismic wave were so similar that quasi resonance occurred was considered in the process of analysis. The calculation is conducted by the string of modulated wave that includes three sinusoidal-resonant waves and five sinusoidal-resonant modulated waves to analyze mechanical strength and seismic performance of integral structure. The results show that 1100kV HGIS under those seismic waves has certain safety margin, provide effective data for analysis of seismic performance of UHV equipment.

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Study on noise in simultaneous geomagnetic difference data caused by the effect of S q local-time variation

Cited by 4 publications

References 8 publications

Tribological properties of anatase TiO2 sol–gel films controlled by mutually soluble dopants

Tribological properties of anatase TiO2 sol–gel films controlled by mutually soluble dopants

Homogeneous synthesis of partially substituted cellulose phenylcarbamates aiming at chiral recognition

Analysis and Calculation of Seismic Performance for UHV Equipment of HGIS

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