Search results

The complex chemistry of pesticides, persistence in the environment, toxicity to animals and human beings and so on make pesticide pollution a critical problem.
Structure of Pesticides 3.
Journal of Photochemistry and Photobiology A: Chemistry. 173:13-20
Journal of Photochemistry and Photobiology A: Chemistry.141:79-84
Removal of natural organic matter from water using a nano-structured photocatalyst coupled with filtration membrane.

The concentration of TiOSO4 solution had significantly influenced the structure and pigment properties of rutile TiO2 white pigment.
It is of great importance to discuss the effects of hydrolysis parameters via low concentration TiOSO4 solution on the structure and pigment performances.
Appropriate crystalline and nice crystal structure was beneficial to improving its pigment properties.
The concentration of TiOSO4 solution influenced the super-saturation of TiO2+, crystal formation, nucleation, crystallization and aggregation process, eventually determined the crystal structure, particle size and its distribution of hydrated TiO2, higher concentration convenient for improving its structure and performances.
Vol. 77 (1998), p. 328 [4] Ullmann's Encyclopedia of Industrial Chemistry.

The chemical structure of OSA starch is shown in Fig.1.
Chemical structure of octenyl succinate starch.
The aim of this study is, therefore, to prepare OSA starches from potato starch in aqueous slurry, and the morphology, crystalline structure and thermal properties are also studied to characterize their chemical structure and physical properties.
Trubiano, In: Starch: Chemistry and Technology, edtied by R.L.
Wurzburg, In: Methods in Carbohydrate Chemistry , edtied by R.L.

Results showed that the foam had a uniform cellular structure, and cell size was about 760μm.
Finally, the cross-linked network structure was formed.
This network embraces the PVC macromolecules giving an entangled structure [7].
The foam with uniformly distributed cellular structure is obtained, and the cell size is about 760μm.
The cellular structure of foam and embryo boiling process are observed by SEM which showes that the foam has uniformly distributed cellular structure.

The sintered ceramic bodies was typical polycrystalline, with cubic spinel structure of copper manganese oxide, rocksalt structure of nickel copper oxide, along with monoclinic phase of copper oxide and orthorhombic perovskite structure of lanthanum manganese oxide.
Most NTC ceramic thermistors consist of transition metal oxides with the general formulae AB2O4 spinel structure [1].
That is mainly because lanthanum oxide forms a perovskite structure with manganese oxide.
Since the radius of element La is much larger than that of elements Ni, Cu and Mn [14], it not only formed a spinel structure, but also formed a perovskite structure with Mn and other transition metal.
The presence of LaMnO3 with the perovskite structure inhibited the grain growth of the spinel phase.

SS430 ferritic stainless steel bar exhibits stringers of ferrite and martensite and in cases of stingers of two phase structures like duplex stainless steel, it has been reported that the transverse impact properties drops to half to two-third the longitudinal values.
The chemistry and mechanical properties of bar is mentioned in table 1 and table 2.
Table 1: Chemical Composition of Bar- Test Certificate Values Elements[wt.%] C Cr Ni Mo Mn P Si N H9254 0.07 16.3 1 0.16 0.4 0.002 0.6 0.0239 H9255 0.08 16.4 0.95 0.2 0.3 0.013 0.66 0.0315 Specification Requirement 0.09 max 15.6-17.6 0.8-1.2 0.3 max 0.5 max 0.030 max 0.4-0.8 0.06 max Elements[wt.%] S V Co Cu Al O H H9254 0.002 0.1 0.04 0.02 0.05 0.0018 0.0008 H9255 0.003 0.1 0.04 0.02 0.1 0.0021 0.0006 Specification Requirement 0.025 max 0.2 max 0.1 max 0.025 max 0.2 max 40 max 2.0 max No significant variation in chemistry was observed between the two heats.
References Reference an article: [1]XinzhongLiu, Jingtuo Hun, Wanhua Yu, and Shifeng Dai, Structure change of 430 stainless steel in the heating process [2] Won-BaeLeea, Jeong-Kil Kim, Joon-Sik Park, In-Su Woo and Jong-Bong Lee, Effect of Interstitial Elements on the Toughness of Ferritic Stainless Steel Weld [3] R D Campbell, Ferritic Stainless Steel Welding Metallurgy Reference to a book: [4] John C.

To get the best geometric structures, the structures are optimized by minimizing the forces on each atom with below than 10-4 Ry/bohr.
The observed geometrical structure of monolayer arsenene is reported as shown in Figure 1.
While for the lattice constant, a , of the arsenene hexagonal structure resulted as 4.4971 Ǻ.
The Journal of Physical Chemistry C, 119(12), 6918–6922
Kokalj (1999) Crystalline Structures and Densities.

Especially, the design and generation of the organic-inorganic self-organized quantum-well structure represent an approach to synthesis that offers new horizons in the context of synthetic chemistry and its possible impact on nanotechnology.
Fig. 2 Schematic structure of (a) (AmPF)2PbI4 and (b) (EAF)2PbI4.
Structure of Perovskite Films.
However, in film (c), no grain structure was observed, indicating that no perovskite crystal structure was formed.
From the X-ray profiles, the (EAF)2PbI4 films had well organized and closer-packing structure than the (AmPF)2PbI4 structure.

Structure of the polymer films was investigated by gel filtration chromatography, FTIR and DCS analysis.
This indicates that the structures of the film are St-graft-pAA dispersed in the St matrix.
Structure of the polymers obtained was studied by means of GPC, FTIR and DSC methods.
DCS results suggested that structure of the film was pAA-modified St dispersed in the St matrix.
(ed.), Starch: chemistry and technology, 3rd ed.

Corrosion structure variation of lead alloy anode is investigated by means of X-ray diffraction (XRD).
XRD results indicate that corrosion product structure is different using different ions solution as corrosive solution.
Huang: Materials Chemistry and Physics Vol. 97 (2006), p. 488 [5] T.Y.