Search results

Characterization The crystal structures or phase identification of the Fe2O3 particles were analyzed by XRD (Advance Bruker D8 diffractometer).
The weight loss of unmodified particles and modified particles were 98.73% and 92.03% respectively, so according to Eq. 1, the grafting rate can be obtained as 7.28%. 3.2 FT-IR spectroscopy In order to determine whether the nano-particles have chemistry linkage with KH-570, KH-570, unmodified nano-Fe2O3 particles and modified particles with 25% KH-570 were characterized by FTIR measurement which is indicated in Fig. 3.
Based on the FT-IR and XRD analysis results, it is concluded that composition of volume phase and crystal structure of modified nano-Fe2O3 were not changed after nano-Fe2O3 was modified, and the interaction of KH-570 compounds with the Fe2O3 nanoparticles has been occurred only at the surface of the nanoparticles by part of hydroxyl group of nano-Fe2O3 surface reacted with silane coupling agent which may enhance the hydrophobic of modified nano-Fe2O3 particles.
There is probably no alteration in the internal structure of the nanoparticles and also no dissolution or growth of the Fe2O3 nanoparticles within or after KH-570 modification. 3.4 Contact angle testing Table 1 presents the contact angle of Fe2O3 before and after modification with KH-570.

Belongs to particles caused by internal reservoir physical chemistry effects, those particles are inorganic deposits.
viscous resistance Pore structure in porous media is extremely complex, which makes the gas seepage speed change constantly.
That is to say, in the flow process, sulfur particles will be lagging behind, at the same time, the complex structure characteristics of the rock in the porous medium will make the process more serious.
As compositions of rock pore structure of porous media are varied, and velocity gradients exist in the seepage field, each part of the particles in the air velocity is different which leads particles rotating by a shearing torque.

The different steps in the phase separation and crystallization processes can significantly affect the structure of the crystallized samples and their physicochemical properties.
These studies should cover the kinetics of phase and structural transformations, as well as the features of the structure formed during phase separation.
Obviously, this is due to the small (nanometer) size and imperfect structure of the resulting crystalline particles of silicon dioxide [5, 6].
Karmokov Glass Physics and Chemistry Vol 44, No 3, p. 222 (2018)

Preparation of nanoparticulate YFeO3 by Ultrasonic Assisted Method and its Visible-light Photocatalytic Properties Peisong Tang*, Chaowan Tang, Jiani Ying, Dongjing Ni, Qian Yang, Limei Wu Department of Materials Chemistry, Huzhou University, Huzhou 313000, P.
It was found that single phase YFeO3 of perovskite structure with excellent crystallinity was obtained after 800 ℃ calcination, according to the JCPDS card number 73-1345.
This indicates that the precursor prepared by ultrasonic method can synthesis pure perovskite structure YFeO3 by calcination at 800 ℃.
The curve of degradation rate changing with time of YFeO3 sample degradation of methyl orange at calcination different temperature Conclusions Using Fe(NO3)3×9H2O, Y(NO3)3×6H2O and citric acid as the main raw material, the perovskite structure nanoparticulate YFeO3 was synthesized by the calcination of ultrasonic processed YFeO3 precursors at 800 ℃.

TG changes the structure and function properties of the proteins, and gives unique texture and taste of food proteins[1].
With the increase of the concentration of the ions, the structure of myofibrillar protein changed greatly, plusing the coordination effect of TG and GDL, and therefore, the gel strengh declined in 1 mol/L NaCl.
Myofibrils which mixtured with GDL developed a more elastic gel structure than the corresponding myofibrils without GDL.when the GDL dosage of 0.5% ,the gel strength value was lower than that when the GDL dosage of 1% (Fig.4).
Food Chemistry. 103(2007), 607-616

Effects of stack performance on different supplied gases To avoid the decrease of efficiency by diffusion polarization, the development of proper electrode structure for easy oxygen evolution is required.
Effects of cell voltage on various applied current Modification of electrode structure has been required to improve the removal of oxygen electrode in terms of oxygen removal characteristics and electrical performance.
It caused severe problem of adhesion to the membrane because the oxygen evolution occurred at the micropore of catalytic layer and lead to break the electrode structure.
Costa, Materials Chemistry and Physics, 92, (2005) p. 526. 7.

The microstructures of low NaOH contained sample showed a rough and cracky structure.
A homogeneous and crackless structure was observed when NaOH/water glass ratio was above 1.3 that could be seen from Fig.4.
By adjusting NaOH/water glass ratio, more homogeneous structure was found when NaOH content is higher, but white spinous crystal growth was found after few days curing caused by the separated out excess NaOH reacting with the CO2 and vapor in the air. 3.
Thermal Analysis, 37 (1991) p.1633-1656 [2] Davidovits, J.: "Mineral polymers and methods of marking them", US Patent 4,349,386 (1982) [3] Davidovits, J.: "Chemistry of Geopolymeric Systems, Terminology", in Geopolymer '99 International Conference, France (1999)

China 2 School of Chemistry and Chemical Engineering, University of Jinan, 250022 P.R.
Introduction TiAl alloys are attractive candidate materials for aerospace structure and engine applications due to their low density, high specific strength and relatively good properties at elevated temperatures and high creep resistance [1-3].
Structure of BP artificial neural network The BP ANN is usually divided into three parts: the input layer, the hidden layer and the output layer.
This structure is known as multilayer perceptron.

For obtaining the desired properties, it is necessary to find out related factors resulting in different morphology and crystal structure of PSC fibrils.
However, relatively little investigation about the influence of the morphology and crystal structure of reconstituted collagen fibrils on PSC-based products' physical behavior has been done.
The manifestation of this polymer structure is generally termed ordered in short-range and disordered at long-distance.
Hu: Principle and Technology of biology Separation (Chemistry Industry Publications, Beijing 2004) [7] Regina Komsa-Penkova, Rumiana Koynova, and Georgi Kostov: Biochimica Biophysica Acta.

Citation & Copyright (to be inserted by the publisher) Non-Contact Measurement of Dielectric Constant for a Nanometer-Thick Polymer Film Gunwook Park1 , Youngjune Hur 2, Jae-Ho Kim 3, Sung-Hoon Kim 4 , Sam-Rok Keum 5 and Kwangnak Koh 6,∗ 1 Dept. of Sensor Engineering, Kyungpook National University, Taegu 702-701, Korea 2 School of Mechanical Engineering, Kyungpook National University, Taegu 702-701, Korea 3 Dept. of Molecular Science and Technology, Ajou University, Suwon 442-749, Korea 4 Dept. of Dyeing and Finishing, Kyungpook National University, Taegu 702-701, Korea 5 Dept. of New Material Chemistry, Korea University, Chungnam 339-800, Korea 6 College of Pharmacy, Pusan National University, Pusan 609-735, Korea Keywords: Dielectric Constant, Nanometer-Thickness, Surface Plasmon Resonance Abstract.
Structure of poly(IPSiOH-co-DEDPM).
The SPR apparatus consists of a laser diode (675 nm, 4.5 mW), polarizer, sensor chip of a four-layer structure (prism (n = 1.514 at 675 nm), metal layer, polymer and air), detector (photodiode), motorized stage, stage controller, temperature controller and a computer (Fig. 2).
Schematic diagram of (a) SPR system and (b) four-layer structure of sensor chip.