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Meanwhile, the molecules of silicon alcohol condense one another and gather in the formation of network structure of the membrane tightly covering the copper powders' surfaces, thus copper powders are coated finally.
Micron copper powders become oxidation easily[9] due to their special structures on the surfaces.
As mentioned above, the coating of silane coupling agent improved the rough surface structure of the copper, leading to activation energy of chemical adsorption with oxygen molecules increased.
Zhang: Report of Physical Chemistry, vol. 16 (2000) No.4, pp367.( In Chinese)

The textural structure of river-snail shell calcined at different temperatures could be observed from field emission scanning electron micrograph (FESEM) images (Fig. 1).
The SEM images indicated that the structure of river-snail shell changed with calcination temperature.
These changes in the structure of calcined river snail shell may derive from the change of composition and the effects of the calcined temperatures.
SKLEAC2010011) of State Key Laboratory of Electroanalytical Chemistry in China, the Projects (Nos. 30700348 and 30700349) Sponsored by the Scientific Research Foundation for the Doctors in Henan Agricultural University of China, as well as the support the Scientific and technological key project (No. 102102310335) of Henan Province in China.

Commonly, oxidizable substances have a spongy structure and a huge intrinsic and extrinsic area.
Generally, they have a much stronger ability of fixation effect to heavy metals due to their minute size and crystal structure, so this is often regarded as a stable speciation in the environment and the heavy metals in this speciation are considered to have low mobility.
The arsenic in the deoxidize is the coordination materials formed on the surface of Fe-oxyhydroxides and Mn-oxyhydroxides or lies in the structures of Fe-oxyhydroxides and Mn-oxyhydroxides by isomorphous replacement of Fe and Mn elements.
Analytical Chemistry Vol. 51 (1979), p. 844–851

Synthesis and optical properties of D-A type organic molecules based on fluorene and carbazole Zebiao Tang 1,a, Xiaoxia Sun 1,b* Peilin Zhang 1,c 1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People’s Republic of China atangzebiao88@163.com; bsunxiaoxia77@126.com; cpeilin.zhang@agilent.com Keywords: Fluorene and Carbazole; D-A type Molecules; Optical Properties.
Introduction During the past decade, organic conjugated molecules with donor-acceptor architectures have attracted much academic and technological research attention, because of their great potential electronic and optoelectronic applications in photovoltaic cells, electrochromic cells and organic light-emitting diodes1 Especially, D-A type molecules have great advantages on physical properties easily being tuned over a wide range by appropriate chemical modification to the structures of donors or acceptors, which have received significant interest by researchers, used as light-emitting and electroluminescent multifunctional materials for organic light-emitting diodes.2-3 When comparing with other materials, donor-acceptor materials broadly provide large π-electron delocalization over the molecules leading to desirable semiconductor properties for electrical and optical applications.
Conjugated donor-acceptor molecule systems based on thiophene, carbazole, fluorene and phenothiazine are among the most promising materials for the development of new generation, highly efficient OLEDs devices.4 Fluorene, which has biphenyl structure with rigid plane, as well as large π-conjugated system, were broadly studied as an electron donor to construct the donor-acceptor organic molecules recently, due to their special structures, various functional groups and easy modification to endow their wide potential photoelectrical applications.5 Carbazole, has been chosen to be electron-donating materials in organic light-emitting diodes, resulting from their rigid plane, long conjugation length, good hole transporting properties and charge transporting compounds creating free carriers in the visible region by the photo-carrier generation process.6 In this article, we design and synthesize new compounds F2 and C2, based on fluorene and carbazole units at the center as electron-donating

Because of porous structure of medical stone powder, the surface area of medical stone powder is considerable.
In a word, the structure and properties of water activated by mineral or ceramic materials all have been changed. 3.3 Devices and mechanism of electrolyzed water Water electrolysis devices are complex.
It means that all the changes are caused by structure of water molecules.
Patent 5,340,458. (1994) [19] Ichiro Otsuka and Sumio Ozeki: Journal of Physical Chemistry B Letters, Vol.37 (2006), p. 1509 [20] X.F.

Though the structures and the nature of hydrogen forms in nanoparticles are unknown, this method represents a principal improvement of the classical methods of diazonium salts reduction and allows obtaining the appropriate pure arenes with high yields and without any by-products.
Zollinger, Diazo Chemistry I: Aromatic and Heteroaromatic Compounds; VCH: Weinheim, 1994
Kim and Ki-Whan Chi, Unusually stable, versatile, and pure arenediazonium tosylates: their preparation, structures, and synthetic applicability, Org.
Lunin, The synthesis, structure, and properties of carbon-containing nanocomposites based on nickel, palladium, and iron, Russ.

EG has a unique pore structure, specific surface area can be up to 50m2/g-200m2/g.
It has three-dimensional cross-linked network structure or porous structure.
[5] Maosheng Jiang, Biao Huang, Xiangyang Cai, Honghui Zhou, Jianmin Qi: Plant Fiber Sciences, Vol. 29 (6) (2007), p. 344-348, in Chinese [6] Biao Huang, Shanyu Gao: Chemistry and Industry of Forest Products, Vol. 24 (1) (2004), p. 69-72, in Chinese

a) TT+PC b) TT+A Fig.5 SEM at 500 times magnification a) TT+PC b) TT+A Fig.6 SEM at 5000 times magnification From Figure 5 (at 500 times magnification) it can be seen that the structure of stabilized soil TT+A is relatively more compact while the structure of stabilized soil TT+PC is relatively loose and porous.
(According to the theory of cement chemistry, the CSH is floc, while Ca4Al2Cl2O6•10H2O is crystal) Testing Results Analysis Figure 2 shows that the strength of stabilized soil TT+A was higher significantly than that of stabilized soil TT+PC.
From Figure 5 it can also be seen that the structure of TT+A is more dense than that of TT+PC.

There was no significant cytotoxicity to the RSMCs as same as to the fibroblast cells [22] although it has proved the existence of cytotoxicity by the differences in the structure of silk proteins [23].
Robson, Silk: Composition, structure and properties.
Pearce (Eds.), Handbook of fiber chemistry, Marcel Dekker Inc, New York, 1992, pp. 415–456
Yang, Structure and properties of cocoons and silk fibers produced by Attacus atlas, Journal of Polymers and the Environment 21 (2013) 21:16–23

Their main property is their framework shape: the molecules look like closed hollow structures.
The best-known carbonaceous frame structure is fullerene C60.
However, problems of production, purification and further addition of radioactive labels into their structure make this method not very promising.
Tsopelas, The radiopharmaceutical chemistry of 99mTc-tin fluoride colloid-labeled-leukocytes, The quarterly journal of nuclear medicine and molecular imaging. 49. (2005) 319-324