Search results

Effects of cellulase treatment on surface structure of fast-growing poplar APMP pulp Yunling Chen1，a, Jiachuan Chen2，b*, Zhiqiang Pang3，c and Guihua Yang4，d 1,2,3,4Key Lab of Paper Science and Technology of Ministry of Education, Qilu University of technology, Jinan, Shandong Province, China ayunlingqwe@163.com, bchenjc@spu.edu.cn, czhiqiang8505@126.com, dygh2626@126.com Keywords: surface structure; cellulase; fast-growing APMP; separate Abstract： The aim of this study was to investigate the surface composition and morphology of fast-growing Alkaline peroxide mechanical pulping (APMP).
Results and Discussion Different cell wall structures and lamellae within the cell wall,typicl ones being shown in Fig.1,could be identified.The identification is based on the characteristic microfibril orientation and varying relative contents of clearly fibrillar and unfibrillar regions in the AFM images.
These relative contents were compared with relative content value of cellulose, hemicellulose and lignin in different cell wall structures found in the literature [8].
The high consistency refining cause damage to the fiber cell wall structure and fiber separation, so you can distinguish the fiber separation in varying degrees.
Sjostrom, Wood Chemistry, Fundamentals and Appli-cations, second ed., Academic Press, New York, 1993

The obtained results infer that the changes in microstructure and thus in mechanical properties depend not only on the treatment regime used, but they are closely related to the steel chemistry.
A common feature of all the structures is a high dislocations density inside martensitic domains.
TEM micrographs showing the sub-structure of differently heat treated Vanadis 6 steel after tempering at a temperature of 170 °C.
Ray, Structure-property correlation of subzero treated AISI D2 steel.
Yakovleva, Dislocation Structure of Cementite in Granular Pearlite after Cold Plastic Deformation, The Physics of Metals and Metallography 114 (2013), 234 – 241

The adsorbent had a promising prospect in analyticl chemistry and water treatment.
Results and Discussion Characterization of Material The crystal structures of the samples were characterized using XRD.
It can be concluded that barium-stroutium titanate loaded on the aluminum oxide had a perovskite structure.
After being calcined at 900℃ (spectral line 3), the mainly absorption peaks not turned, indicating that the aluminum oxide structure be not changed after high temperature processing.
The adsorbent had a promising prospect in analyticl chemistry and water treatment.

In the present work synthesized a new polybenzylidenephenylenediamines different chemical structure.
In this case, the temperature range of decomposition of polybenzylidenephenylenediamines depends on the chemical structure of the macromolecule, in particular, the structure of the side chain.
Azomethine: the practical application in chemical industry and medicine // Collection of scientific articles: Chemistry and technology of organ element monomers and polymeric materials.
Synthesis methods, polymer structure, Polymer Sci.
Investigation of the kinetics of aniline oxidative polymerization advances in chemistry and chemical technology.

RMnO3 manganites wich the rare earth elements with small radii as, Ho, Er, Tm, Yb, Lu and Y, they have a hexagonal structure, whereas the compounds with R = La, Pr, Nd, Sm, Eu, Gd , Tb have a perovskite orthorhombic structure [7,8].
We take note that there is a work made by Filippetti and Nicola in 2002 confirmed that the YMnO3 adopts also the cubic structure [10, 21].
For an isotropic structure, the 3D figure is spherical.
Acknowledgements The authors wish to thank the Laboratory of Physico-chemistry of materials, Laghouat University, Algeria, and Laboratory of Molecular Chemistry and Environment, Biskra University, Algeria for providing adequate working conditions to accomplish this work.
Kalarikkal, Radiation Physics and Chemistry. 89 (2013) 28-32

The different-speed mixer shaft is composed of the main mixer shaft and the cleaning shaft, whose structure is shown in Fig.1.
Fig.1 The structure of the mixer shaft The finite element model of the mixer shaft is shown in Fig.2.
Chemistry Industry Publishing Company (1991)
[2] Chaohui Zhang: ANSYS11.0 Structure analysis engineering application.
Chemistry Industry Publishing Company (2004)

Such systems are encapsulated structures: glass-silicon-glass.
Encapsulation of MEMS structures, which is performed as quickly as possible after their release.
Plasmachemical synthesis in low-temperature atmospheric pressure plasma //Russian Journal of General Chemistry. – 2015. – Т. 85. – №. 5. – С. 1209-1221
Development of Process for Fast Plasma-Chemical Through Etching of Single-Crystal Quartz in SF 6/O 2 Gas Mixture //Russian Journal of Applied Chemistry. – 2018. – Т. 91. – №. 8. – С. 1255-1261
Optimization of technological parameters in plasma chemical etching of quartz single crystals //Russian Journal of Applied Chemistry. – 2016. – Т. 89. – №. 6. – С. 865-870

Synthesis of carambola-like CuO via a chemical bath method JianPeng Li, FengQiang Sun* School of Chemistry and Environment, South China Normal University, Guangzhou, China *e-mail: sunfq@scnu.edu.cn Keyword: cupric oxide carambola-like structure anode materials Abstract: By a simple chemical bath method, new carambola-like structured CuO had been fabricated in a solution composed of Cu(NO3)2, NaOH and hexamethylenetetramine (HMTA).
In this work, we report a simple solution process (in the absence of any organic templates) to synthesize cupric oxide with a carambola-like structure.
The crystal structure of the as-prepared samples was analyzed by X-ray diffraction.
After the Cu(OH)2 in the solution had been heated 1.5h at 95oC，carambola-like structures began to appear (Figure 2d).
Scheme 1 Stepwise growth mechanism for the formation of carambola-shaped CuO structures.

This kind of structure can be generically expressed by the composition, Cu12Sb4S13.
The crystal structure of the Tetrahedrite can be interpreted as a derivation of the crystal structure of the Sphalerite, which presents a cubic structure F -43m, with composition ZnS.
Fig 2: (left) Crystal structure of the Tetrahedrite.
The accurate calculation of band gaps is an active and important research area in Solid-State Physics and Theoretical Chemistry.
Wuensch, The crystal structure of Tetrahedrite, Cu12Sb4S13.

It is essential to investigate the structure of urea nozzle since it considerably impacts the atomization of urea water solution.
In this paper, an urea spray model is established and simulated by CFD software FIRE with different nozzle structure parameters such as nozzle hole number, nozzle hole chamfering and spray angle.
The structure of the nozzle is shown in Fig. 2.
Xiao: Asian Journal of Chemistry Vol. 24 (2012), p. 5889 [2] Y.H.
Zhou: Asian Journal of Chemistry Vol. 24 (2012), p.5897 [3] X.W.