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Department of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar Heilongjiang 161006, China a: hongan1967@163.com,b:gaoshugang1968@163.com Keywords n-alkylacrylate；vinyl acetate； polyalkylacrylate-vinyl aceatate; diesel pour point depressant ; solidifying point; cold filter plugging point Abstract The n-tetradecylacrylate-vinyl acetate copolymer (PPV) was prepared from n-tetradecylacrylate and vinyl acetate.
Table 2 Effect of different molecular weight of PPV-14 PPD types on SP and CFPP for -20＃ diesel from Daqing Petrochemical Company sequence number The amount of chain-cutting agent(%wt) distribution coefficient molecular weight ΔSP（/℃） ΔCFPP （/℃） 1 0.00 16.18 25166 14 6 2 0.25 2.94 23815 15 6 3 0.40 3.11 15014 18 7 4 0.50 4.89 8382 18 5 5 1.00 5.33 2177 10 3 When studying the structure activity relation in polymeric additives for diesel it is common to find in the literature a given composition beyond which an increase in the proportion of active groups does not affect the performance of the additive anymore, to the contrary it could make it worse.
Its structure is: Its performance of EVA used as PPDs is greatly affected by many factors, owing to the complexity of diesel fuels, its decreasing pour point of diesel rely on the adsorption mechanism.
Structure activity relationship study on paraffin inhibitors for crude oils (INIPAR model II).

In the era of previous molecular biology, the life was regarded as an organism having special "vitality" by biologists.It performed the life activities following the law which didn’t exist in inorganicsphere.In the era of molecular biology, the researchers put life as a precision machine which was operated by genes and protein on the basis of the law of physics and chemistry.
In other words, the systems biology research is not a static structure.
The compositions (such as gene mutations) or external growth conditions of the system model are systematically changed, the corresponding changes of system components or structure in these cases are observed, the got information are integrated.
In short, at present the four aspects of biological system, what the studies of systems biology have focused on, are system framework, the dynamic characteristics of system,control approaches and design methods.The system framework includes interaction networks of the gene (or protein), biochemical pathways and physical mechanism adjusting the structure among cells.

The phase structure and crystallinity of Li-doped ZnO films were determined by an X-ray diffactometer (D/MAX-IIIC).
All annealed ZnO films exhibit a strong and sharp (002) diffraction peak, indicating that the films have a hexagonal wurtzite structure with highly (002)-preferred orientation.
The top-plane with rough hexagonal shape suggests the wurtzite structure with (002) orientation.
Scherer: Sol-Gel Science: The Physics and Chemistry of Sol Gel Processing’, 1st edn, Chap. 2, ‘Hydrolysis and condensation Ⅰ: Nonsilicates (Academic Press, New York 1975)

Schneider4,i 1Institute of Metal Forming (IBF), RWTH Aachen University, Intzestr. 10, 52056 Aachen, Germany 2Chair for Laser Technology (LLT), RWTH Aachen University, Steinbachstr. 15, 52074 Aachen, Germany 3Fraunhofer Institute for Laser Technology (ILT), Steinbachstr. 15, 52074 Aachen, Germany 4Materials Chemistry (MCh), RWTH Aachen University, Kopernikusstr. 10, 52074 Aachen, Germany ateller@ibf.rwth-aachen.de, bbambach@ibf.rwth-aachen.de, chirt@ibf.rwth-aachen.de, dingo.ross@ilt.fraunhofer.de, eandre.temmler@ilt.fraunhofer.de, freinhart.poprawe@ilt.fraunhofer.de, gbolvardi@mch.rwth-aachen.de, hstephan.pruente@rwth-aachen.de, ischneider@mch.rwth-aachen.de Keywords: Extrusion, dry metal forming, wear, adhesion, coating, laser surface treatment Abstract.
Additional characteristics of that kind of metal forming processes are the good surface quality and a homogeneous grain structure of the formed parts.
While these craters increase the average roughness, the impact of this indirect structuring with a stochastic pattern on the surface’s adhesion wear behavior is not known yet.
The broad hump indicates the formation of a nanocrystalline structure of the Mo2BC coating and is consistent with earlier reports [14].

., 30, Tomsk, 634050, Russia 3Nikolaev Institute of Inorganic Chemistry SB RAS, pr.
In general, it consists of a cordierite monolith of honeycomb structure with deposited active composition.
In our case, the deactivation processes can be divided onto three groups: changes in the oxide support (phase transformation, collapse of the porous structure, sintering, etc.); changes in the active components (agglomeration of the palladium particles, bulk diffusion of rhodium ions, etc. [6, 7]); loss of the wash-coat components.
Oppositely, an addition of ZrO2 into the alumina structure worsens the initial activity of the catalyst due to stronger metal-support interaction.

The DMD advantages comprise increased material-output ratio due to the lack of support material in the manufacture of parts, as well as a monolithic material structure exceeding the strength characteristics of parts obtained by casting by 10-15 % [14].
[16] Pollock, T.M. & Tin, S. 2006, "Nickel-based superalloys for advanced turbine engines: chemistry, microstructure, and properties", Journal of Propulsion and Power, vol. 22, no. 2, pp. 361-374
[19] Ganesh, P., Kaul, R., Paul, C.P., Tiwari, P., Rai, S.K., Prasad, R.C. & Kukreja, L.M. 2010, Fatigue and fracture toughness characteristics of laser rapid manufactured Inconel 625 structures, Materials Science and Engineering A, vol. 527, no. 29-30, pp.7490-7497
[20] Polkin, I.S., Skvortsova, S.V., Turichin, G.A. & Novikova, M.B. 2019, Structure formation in A.M. processes of Titanium and Ni-base alloys, in Additive Manufacturing for the Aerospace Industry, pp.87-98.

The crystal structure of prepared products were characterized by X-ray diffraction (XRD) on a Rigaku D/max-2500B2+/PCX system (Rigaku, Beijing, China) with Cu/K radiation (λ = 0.154nm) over the range of 20 to 80° (2θ) at room temperature.
Result and discussion Structure and morphology characterization.
Fig. 1(b) shows the morphology and structure of CNT/Ni(OH)2 composite, Ni(OH)2 particles which are obtained by chemical deposition method is attached to CNTs randomly.
[8] M S Balogun, W Qiu and W Wang: Journal of Materials Chemistry A, Vol. 3 (2015) No.4, p.1364–1387

Binding Affinities of Hyptolide and Its Derivatives onto HDAC Class IIa Protein from In-Silico Analysis Lulut Tutik Margi Rahayu1,a, Parsaoran Siahaan1,b and Meiny Suzery1,c* 1Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Semarang, Indonesia aluluttmrahayu@students.undip.ac.id, bsiahaan.parsaoran@live.undip.ac.id, cmeiny.suzery@live.undip.ac.id* Keywords: Hyptolide and its derivatives, HDAC IIa Protein, molecular docking, Binding Affinities.
Kumboonma et al., (2019) reported that HDAC inhibitors are grouped into 5 types, based on their chemical structure, that’s are hydroxamic acid derivatives, cyclic tetrapeptides, benzamides, electrophilic ketones and hydroxamic acids.
The materials were 2D structure of hyptolide (A), epoxy-hiptolide (B) and dimethylphenylamine-hyptolide (H) that drawn using ChemDraw Ultra 12.0 software.
Preparation of Ligands and Receptor The ligands were drawn in two dimensions structure using Avogadro software, then saved in the (.pdb) format file.

Below this temperature, the material is monoclinic structure, semiconducting and infrared transparent.
Above the transition temperature, it is tetragonal structure, metallic and infrared reflection [1].
After that, 0.025 at% of ammonium (para) tungstate tetrahydrate powder ((NH4)10(H2W12O42) .4H2O, Aldrich Chemistry) and 0.80 g of oxalic acid dihydrate ((COOH)2 2H2O), Ajax Finechem Pty Ltd) were added.
Morphologies of the synthesized nano-pigments were characterized by transmission electron microscopy (TEM: JEOL JEM 2010).The crystal structure and phase composition were determined by X-ray diffraction (XRD: Phillip X’Pert MPD).

Study of Allylsilyl and Hydrosilyl Groups as Anchor Moieties of Sensitizing Dyes for Dye-sensitized Solar Cells Kenji Kakiage1, Masaki Yamamura1, Toru Kyomen2, Masafumi Unno2 and Minoru Hanaya2,a 1Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan 2Faculty of Science and Technology, Division of Molecular Science, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan amhanaya@gunma-u.ac.jp Keywords: Dye-sensitized Solar Cell, Sensitizing Dye, Allylsilane, Hydrosilane, Azobenzene Abstract.
Molecular structures of silylazobenzene dyes (1-3) used in this work as sensitizing dyes. 4-(Allyldimethylsilyl)azobenzene (1) and 4-(dimethylsilyl)azobenzene (2) used as sensitizing dyes in this work were synthesized by lithiation of 4-iodoazobenzene followed by substitution reaction with ClSiMe2CH2CH=CH2 and ClSiMe2H, respectively. 4-(Methoxydimethylsilyl)azobenzene (3), which was used as a reference to the allylsilyl and hydrosilyl azobenzenes, was also synthesized by lithiation of 4-iodoazobenzene followed by substitution with ClSiMe2OMe [19].
Molecular structures of these silylazobenzenes are shown in Figure 1.
Although the bonding structures of the silyl dyes (1-3) on the surface of the TiO2 electrodes are expected to be the same, the amounts of dye molecules of 1 and 2 adsorbed on Table 1.