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Introduction The safety of concrete structure in design and construction has been always laid particular stress, while the durability of concrete structure was ignored.
Professor Mehta [3] pointed out that several reasons for the destruction of concrete structures in descending order of importance were: steel bar corrosion, freeze-thaw damage in cold climate and physics and chemistry action in erosion environment, which showed that the impact of rebar corrosion on concrete structure durability is greatest.
Consequently, the study of the influence of the corroded steel bar on concrete structure durability has become an important subject.
Applicability study on accelerated corrosion methods of steel bars in concrete structure.
Journal of Building Structures, 2011,32 (2):41-47.

Carbon nanofibres often show a stacked-cup graphitic structure with surface edge imperfections, making them far cheaper than commercial multi-wall carbon nanotubes.
Results and discussion Foaming behaviour and cellular structure.
The material's code, foam density and gas (Vgas), polypropylene (VPP) and carbon nanofibre (VCNF) volume fractions are presented in Table 1 alongside the main cellular structure characterization results.
Clearly, all the PP-CNF foams showed an isometriclike cellular structure (AR ≈ 1), smaller cell sizes being obtained with increasing the amount of CNF.
Weast: Handbook of Chemistry and Physics, 53rd ed, The Chemical Rubber Co. (1973)

Changes in morphology and crystal structure after oxidation were observed by the TEM.
The hollow structures remain after the oxidation at 573 K for 3.6 ks.
long-time oxidation at 573 K for 36 and 360 ks, the hollow shape and the crystal structure of CuO don't change.
As can be seen in Fig. 4(b), hollow nanoparticles turn completely into solid structures with the crystal structure of CuO being maintained after oxidation at 773 K for 3.6 ks.
Kung: Surface Chemistry and Catalysis (Elsevior, Newe York, 1989) [18] J.J.

Chitosan has stable complexes for metal ions for the existence of large numbers of -NH2 and -OH which can use hydrogen or ionic bonds to form cage-shaped molecules similar to network structure.
Due to the special structures of chitosan and its derivatives, which contain active -OH, -NH2, -COOH, etc., their structures, solubilities, physiological functions and biological activities can be changed and some new active functions even be generated by introducing metal ions or other reactive groups at N or O atoms.
The study demonstrated that HTACC-Zn(II) had good catalytic activity for the hydrolysis of bis(p-nitrophenol) phosphate(BNPP), meanwhile, HTACC-Zn(II) can also effectively catalyzed the cleavage of plasmid DNA(pUC19) and enabled the DNA molecule crack from supercoiled structure to open loop and linear structure.
However, recent research in coordination of chitosan and its derivatives with metal ions focus on application and less on coordination mechanism and complex structures.
Shi, Chinese Journal of Applied Chemistry. 27(2010), p462 [30]H.

For the ideal wurtzite structure, ca=83 and u=38 [9, 24].
Thus, the crystal structure becomes a simple Cs point group.  
Finocchi, 1993, The Electronic Structure of Gallium Nitride.
Esser, 2015, GaN m-plane: Atomic structure, surface bands, and optical response, Phys.
Journal of Physics and Chemistry of Solids 64 2183–2190.

In order to fulfil the scaling law, various device structures have been proposed to maintain the device characteristics accurately.
In recent years, a number of non-classical MOS device structures have been proposed to overcome the SCEs of CMOS technology in the nanoscale region.
In this paper, we compare the performance analysis of SG TFET, DMG TFET and Dual Material Double Gate (DMDG) TFET structure.
It has been observed that DMDG TFET structure will give higher drain current ION, as well as lower leakage current.
Journal of Physics and Chemistry of Solids, 1960, 12(2):181

Some possible application areas of nanotechnology in papermaking includes: New materials; wet-end chemistry; Nanofiltration in closure of water circulation; coating; calender rolls; sensors; microscopy; and nanoscale assemblers [10].
Structure and properties of nanocellulose that are important include: morphology, crystalline structure, surface properties, chemical and physical properties, and properties in liquid suspension [14].
The investigations include the effect of the different pretreatments on chemical composition and structure of isolated nanofibers beside thier dimensions and properties [15].
Mechanical Techniques Refining/grinding/beating/blending/cryo-crushing followed by high pressure homogenization Characterization Structure 1.
The high toughness of highly porous nanopaper is related to the nanofibrillar network structure and high mechanical nanofibril performance [20].

Study on Photo-catalytic Properties of nano-TiO2/Anthraquinone in a Sandwich-Type Bipolar Membrane Yuxi Rena, Qiang Chen, Jinhuo Lin, Zhen Chenb College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007, China acissy1981melon@126.com, bzc1224@pub1.fz.fj.cn Keywords: Sandwich-type, Bipolar Membrane, nano-TiO2, Anthraquinone Abstract.
This effect might be due to the special structure of the transition region.
As expect, a sandwich-type structure was observed.
Fig.1 SEM observation of cross-section view of mCMC/nano-TiO2-Anth/mCS BPM Structure of electrolysis cell.

The following structure of both programs was proposed as indicated in Fig. 2 and 3.
The fundamentals in mathematics and natural sciences include e.g. mathematics, physics, computer science, chemistry, material sciences; the fundamentals of mechanical, electrical and computer engineering e.g. micro computer and controller techniques, engineering mechanics, electrical circuits and electronics, programming/software engineering, design and manufacturing, measurements, thermo and fluid mechanics, automation, pneumatics and hydraulics, electrical drives and machines; mechatronics e.g. mechatronic systems, modeling and simulation, control, PLC, mechatronic design, sensors, actuators, system theory, mechatronic materials; general topics e.g. business administration, project management, team and personal leading, presentation techniques, languages, soft skills), and the bachelor thesis the graduation project, the thesis and the colloquium.
Fig. 2: Structure of the undergraduate bachelor degree program A relatively large free space of 10% in the bachelor program and 25% in the master degree program guarantees the diversity of mechatronics programs.
Fig. 3: Structure of the graduate master degree program Table 1: Overview of undergraduate bachelor degree programs Ma/NS F.Eng.

Thermal and mechanical properties of poly(methyl methacrylate) nanocomposites containing polyhedral oligomeric silsesquioxane Chunbao Zhao1,2,a, Xin Wang2, Xujie Yang2, Wei Zhao1 1 Faculty of Microelectric Engineering, Nanjing College of Information Technology, Nanjing, 210046, China 2 Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, China azhaocblww@yahoo.com.cn Keywords: poly(methyl methacrylate), polyhedral oligomeric silsesquioxane, nanocomposites, thermal stability.
POSS molecule has special organic-inorganic hybrid cage structure and can be easily incorporated into polymer systems through blending, grafting or copolymerization[4,5] to obtain high performance composites.
The difference of the storage modulus between two types of composites is mainly attributed to the structures of the filled POSS.
The factors leading to the variation of Tg of POSS-containing composites include POSS species, loading and the composites structures[4].