Search results

FTIR analysis FTIR analysis is an important means for the analysis and identification of the compounds molecular structures.
The upper shed surfaces are mottled and uneven, the erosion is serious, and a large number of cracks and pores divide the surface into sizes of block structures as shown in Fig2 (a).
In order to study whether the similar phenomena as above mentioned also appear at the shed interiors, the upper and lower sheds are sliced for observing the side structures by using SEM, as shown in figure 2 (c) and (d).
The result shows that the interior structures of upper and lower sheds is compact without significant difference, However, both surfaces of the upper and lower sheds appear a layer of pulverization with thickness of about 200μm and 50μm.
As it is considered from material chemistry, the judgment of LSR aging degree is mainly based on the number of shed surface methyl (reflecting the surface hydrophobicity), and the main chain rupture details by contrasting the infrared spectrum of the shed surface with that of the shed interior in figure 3(b).

Compared with microporous materials, mesoporous materials have an open-type pore canal structure and a very high specific surface area and pore capacity, neutralized the restriction of pore diameter.
Therefore, molecular sieves with a composite structure of micropores and mesopores have been designed and are expected to have a good application prospect for catalyzing, adsorbing and separating macromolecule pollutants.
Dyes with multimethenyl structure have a good water solubility but poor biochemical property.
The synthesized NaA/MCM-48 molecular sieve is a kind of substance of no fixed geometry, with the regular cubic crystal structure of NaA molecular sieve still being seen.
The XRD, SEM and TEM analysis shows that the resultant NaA/MCM-48 sample has the structure characteristics of micro-mesoporous composite molecular sieve.

The Policy Systems of Low-carbon Economy for Jiangxi Province Qiugen Zhang1a Yin Yin2b Li’an Wei1c 1School of Environment and Chemistry Engineering, Nanchang Hangkong University, Nanchang 330063, China 2 Environmental Engineering Assessment Centrality, Jiangxi Environmental Protect Department, Nanchang 330029, China aniatzqg@163.com, byinggreen1982@yahoo.com.cn, cweilian63@126.com Keywords: low-carbon economy; policy; Jiangxi.
Low-carbon finance policy It should establish a comprehensive and multi-level financial support system through innovative investment model and budget expenditure structure.
Low-carbon industry policy The development of low-carbon industry may promote low-carbon economic structure optimization.
So it should optimize the industrial structure by adjusting the industry structure and product structure and reduce the proportion of high-energy consuming industries and eliminate backward production capacity and technology.
At the same time, it should advocate some special industrial structure adjustment policies for the development of low-carbon economy which including low-carbon agriculture specific policies, low-carbon industrial specific policies and low-carbon services specific policy [9].

Introduction Information about the structure, dynamics and freezing phenomena of water confined in nano sized media has significant importance for many technological applications as well as for solving fundamental physical problems.
Though water molecule has a very simple structure, its thermophysical and dynamical properties are very complex due to the hydrogen bonding, which becomes dominating as the liquid enters the metastable supercooled phase.
Therefore there is competition between the surface - liquid and liquid - liquid interactions, which can lead to interesting new structures of the water that are not observed in bulk water [9].
The confined fluid freezes into a single crystalline structure for average pore diameters greater than 20 σ, where σ is the diameter of the fluid molecule.
For average pore sizes between 20 and 15 σ, part of the confined fluid freezes into a frustrated crystal structure with the rest forming an amorphous region.

Nanoparticles spinel ferrites (FCC: Face-Centered Cubic) structure are of attention due to their individual dielectric and magnetic properties.
Materials and Methods Fe (NO3)3·9H2O) - Iron (III) Nitrate (SDH-USA), Cobalt (II)–nitrate {Co (NO3)2·6H2O}, Crist Purisino Germany, Citric Acid (C6H8O7·H2O) - (Romil Pure Chemistry, UK), ammonia solution (NH4OH) – Msccles field, Cheshire, UK).
The gels were wholly burnt out at 200 °C to form a fluffy loose structure (ash).
Since the result showed this ratio is 0.54549, then the cobalt ferrite have multi-domain structures, [11].
Juang, “An overview of the structure and magnetism of spinel ferrite nanoparticles and their synthesis in microemulsions”.

Yakovleva3,c 1Department of Physical Chemistry of Materials and Technology, V.P.
SEM-images of metallized diamond grains, structure and morphology of coatings after solid-phase interaction of diamond with iron (a, d), nickel (b, e), cobalt (c, f).
It can be seen that the intermediate layer has a fine-grained structure of a complex, heterogeneous grain size.
At higher magnifications (Fig. 2b, c), a complex structure is seen in these recesses, where individual particles and small layers of adhered metal are distinguished.
In addition to the most intense peak of the G-mode (~1580 cm-1), characteristic of perfectly structured graphite [19,20], two peaks are observed corresponding to D (~1350 cm-1) and G1 (~2700 cm-1) graphite modes when scanning.

Introduction Obtaining novel morphology of micro/nanostructures is vital for studying structure-physical property relationships as well as for realizing the novel functional micro/nanodevices, since the physical and chemical characteristics of these materials are strongly connected with their structures [1].
A free-standing ZnO TC (ZnO FSTC) was observed rather than a bridge-shaped structure across the reactive tube.
If sufficient reactants were kept in growth atmosphere during growth, the ZnO FSTC would further develop into a bridge-shaped structure across the reactive tube as seen in Fig. 1.
The growth of the fine wires both in the axial and lateral directions easily results in the adjacent ZnO wires coalesce into a flower-shaped structure which has been clearly shown in inset of Fig. 2(d).
References [1] HU J.T., ODOM T.W., LIEBER C.M.: 'Chemistry and physics in one dimension: Synthesis and properties of nanowires and nanotubes', Acc.

Figure 1 shows the chemical structure of the cellulose.
Chemical structure of cellulose [9].
Ligninolytic enzymes can change or degrade the natural aromatic polymer structure of lignin in lignocellulosic biomass.
The homogeneous and dense structure of the CC/NBR composite indicates good dispersion of NC into the NBR matrix and the formation of good filler-matrix interactions.
Muhd, “Cellulose as reinforcement in nitrile butadiene rubber,” Cellulose chemistry and Technology, vol. 54, no. 1, pp. 11–25, 2020

Theoretical Study on the Antioxidant Activity of Alkannin and Its Derivatives* Ruifa Jin Department of Chemistry University of Chifeng Chifeng 024000, China Ruifajin@163.com Keywords: Naphthoquinones.
The antioxidant activity of the phenolic constituents is related to their structures.
The structure–activity relationships of the alkannin and its derivatives have been investigated in experiments [2–11].
The ground-state equilibrium structures of 1–8 optimized at the B3LYP/6-31++G(d,p) level are completely planar.
The trend of BDE values for the examined compounds suggests that an essential factor for a good activity as antioxidant is the hydrogen bond type structure.

Over the past few years, many efforts have been made to synthesize new derivatives of this known structure, aiming at discovering the innovative antitumor drug candidate with more effective and less side effects.
The antioxidant activity of the phenolic constituents is related to their structures.
The structure–activity relationships of the alkannin and its derivatives have been investigated in experiments [3–10].
The ground-state equilibrium structures of 1–7 optimized at the B3LYP/6-31++G(d,p) level are completely planar.
The trend of BDE values for the examined compounds suggests that an essential factor for a good activity as antioxidant is the hydrogen bond type structure.