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In this paper, steady CFD analysis were applied to different structures of double-tangent-port.
Structure Optimization of Intake Ports The best procedure is to import CAD-data via the STL-interface and ensure that the CAD-data is showing the same engine as the hardware used at the experimental test rig.
In order to study different structures’ effects on the performance of double-tangent-port, eccentricity (), angle () and taper angle () were considered.
Therefore, optimizing the structure is a useful way to coordinate the trade-off between swirl ratio and flow coefficient.
[8] Hiroyasu H., Kadota T., Arai M., Development and Use of a Spray Combustion Modeling to Predict Diesel Engine Efficiency and Pollutant Emissions (Part 1: Combustion Chemistry), Bulletin of the JSME, 1983, 26: 569-575

Transmission electron microscopy (TEM) revealed the presence of both nanosphere and nanoworm structure in the m-C3N4.
The type IV isotherm showed a small hysteresis loop that confirmed the successful generation of mesoporous structure in C3N4.
In order to reveal the structure of the synthesized m-C3N4, TEM image was taken.
It was confirmed that the synthesized m-C3N4 has both spherical and nanoworm-shaped structure as shown in Figure 2.
It was confirmed that the addition of ZnPc did not affect the structure of m-C3N4 but gave influence on the absorption properties.

The mesoporosity structure and inner hollow cavities of Pd/CNTs catalyst are responsible for the distinguished properties.
The excellent activity of Pt/CNTs catalyst is mainly related to the particular pore structure, which accelerate the diffusion rate of reactants and products.
The mesoporosity structure of CNTs is desirable for cyclohexanone desorption, which prevents cyclohexanone transferring into cyclohexanol.
In conclusion, the combination of mesoporosity structure and inner hollow cavities of Pd/CNT catalyst are responsible for the distinguished catalytic behavior.
Arpe, in: Industrial Organic Chemistry, 2nd edn., VHC, Weinheim, 1993, 251

Synthesis and Properties of a Novel symmetrical Diarylethene with Bromine Atoms Fang Duan,Xue Li and Gang Liu* Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structure of compound 1o was characterized by 1H NMR spectroscopy.

Spectrophotometric method for the assay of chlorhexiidine acetate Yanhong Lei College of chemistry, Jiujiang University, Jiangxi,Jiujian,332005,china lei_4300@163.com Keywords: UV-spectrophotometry;chlorhexiidine acetate;drug analysis.
chlorhexiidine acetate had fixed structure shown in table 1 Molecules for two valence of cation surfactant, better than quaternary ammonium salt cationic surfactants ,Because of its wide sterilization, low toxicity, no stimulation to the skin,chlorhexiidine acetate was widely used in the main components of the compound disinfectant,that common skin mucous membrane and oral wascommonly used.chlorhexiidine acetate had wide antibacterial and sterilization , gram-positive bacterium and negative bacteria were quite strong bacteriostasis, sterilization effect. chlorhexiidine acetate could kill all kinds of bacteria breeding, low concentration of possessing had a bacteriostatic action, can effectively inhibit anaerobic bacteria and aerobic bacteria mixed infection of oral infection.chlorhexiidine acetate had good antibacterial effect on staphylococcus aureus, escherichia coli, verdigris false single spore bacteria and candida albicansIn medicine, chlorhexiidine acetate was widely used in diminish

The surfaces were obtained from the relaxed bulk structure.
Kartio, E.Suoninen: “FTIR And XPS studies of Surface chemistry of pyrite in flotation”, Proceedings of the XIX International Mineral Processing Congress, 1995, 3: 35–38

• Materials and nanotechnology in chemistry. 572 participants from 32 regions of the Russian Federation and 14 participants from 5 countries of the near and far abroad (Uzbekistan, Armenia, Vietnam, Taiwan, Belarus) were registered for the conference in 2020.
of Civil Engineering Friel Akhmetov Kazan Federal University Mukhtar Bekkiev Mountain Geophysical Institute Iskander Gilmanshin Kazan Federal University Georgy Nikitin Kazan Giproniiaviaprom JSC Oleg Radaykin Kazan State University of Architecture and Engineering Stanislav Roshchupkin Sevastopol State University Emer Sibgatullin Kazan Federal University Victor Taratuta Kuban State Agrarian University Svetlana Yazyeva Don State Technical University International Program Committee Gagik Galstyan National University of Architecture and Construction of Armenia (Yerevan) Shan Yue Shandong Jiaotong University Narine Pirumyan National University of Architecture and Construction of Armenia (Yerevan) Lyu Chunguan Shandong Jiaotong University Amansahatov Chariyar Deputy Director of the Academy of Sciences of Turkmenistan Erkin Nafasov Chief expert of Gosstroy of Turkmenistan Abbas Hodzhaev Tashkent architecture and civil engineering institute (TACII) Ján Bujňák Head of Department of Structures

Zhou [12] reported a method that azide and terminal alkyne-functionalized gold nanoparticles using click chemistry to detect Cu2+ ions in aqueous solution.
TEM image of silica nanoparticles The structures of functionalized SNPs were confirmed by FT-IR analysis as shown in Fig. 2.

Genetic algorithm-kernel partial least squares (GA-KPLS) as a novel nonlinear feature selection method also has been used in nonlinear quantitative structure-activity relationship (QSAR) model [7].
Kyani: European Journal of Medicinal Chemistry, vol. 42 (2007), p. 649

These electrons form a Kikuchi like pattern which can be used to identify both the crystal structure (phase) and the crystal orientation of each sampled volume.
Wei, H.Y.Bor, C.Y.Mb: Materials Chemistry and Physics Vol.80 (2003), p.89-93 [5] Chun-Hong Chen, Kanji Takita, Satoshi Ishiguro: Journal of the European Ceramic society (2005), p. 3257-3264 [6] Y.YANY, Q.LIU, Y.JIAO,: ISIJ Int.