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Soil Microbial Community Structure in Tree Peony (Paeonia Suffruticosa) Garden Based on PLFA Analysis Dong Xue1, a, Xiangdong Huang1,b, Lian Xue2,c 1Department of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, China 2Deparment of Clinical Laboratory, Wuchang Hospital, Wuhan 430063, China axuedong78@163.com, bhuangxiangdong78@163.com, c10718609@qq.com Keywords: Microbial community, PLFA, Paeonia suffruticosa, Paeoniaceae, Planting years Abstract.
Soil microbial community structure was analyzed by phospholipid fatty acid (PLFA) method.
Previous researches have shown microbial community structure is generally different in soils of different plant species, and is also affected by planting years [3, 4].
The objective of our study was to evaluate the changes in soil microbial community structure and diversity in response to planting years of tree peony garden.
The PLFA analysis showed that there was significant change in microbial community structure in response to planting years of tree peony garden (Fig. 1).

Numerical Simulation of the Stress-Strain State of a Hybrid Titanium-Polymer Composite Material for Optimizing the Design of Aircraft Structures Fedor A.
Problem Statement and Objects of Research The purpose of this work is to identify the possibilities of optimal design of structures made of hybrid titanium-polymer composite materials to expand their possible use in aviation structures.
In order to achieve this goal a number of tasks were solved in the course of the work: - the analysis of the structure of samples from TPCM, the production of which was tested in previous works [1-15], was carried out; - a computational assessment of elastic-strength properties was carried out for two main types of loading (tension and three-point bending).
Kutsevich, Russian journal of general chemistry Vol. 81 5 (2011) 1022 – 1024

In this study, the biopolymer’s compositions are combined from different types of hydrocolloids (polysaccharides base) with gel forming ability and additives for better structure.
The Council of the International Union of Pure and Applied Chemistry (IUPAC) defined that: A plasticizer is a substance or material incorporated in a material (usually a plastic or elastomer) to increase its flexibility, workability, or distensibility.
Glycerol, a polyol, is widely used as a plasticizer to improve the structure of the edible film.
Dokić, “Rheology, structure, and sensory perception of hydrocolloids,” in Food Structure and Functionality, Elsevier, 2021, pp. 23–47. doi: 10.1016/B978-0-12-821453-4.00005-3
Sun et al., “Review of Konjac Glucomannan Structure, Properties, Gelation Mechanism, and Application in Medical Biology,” Polymers (Basel), vol. 15, no. 8, p. 1852, Apr. 2023, doi: 10.3390/polym15081852

Synthesis and electrochemical performance of NiO/Co composite anode material Qiuzhong Li1, a, Guiyang Yan1, 2, b , Feng Chen1, c 1Department of Chemistry, Ningde Normal University, Ningde 352100, China 2College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China aliqz999@163.com, bygyfjnu@163.com, cchenfeng710828@163.com Keywords: NiO/Co composite material, anode material, Li-ion battery, electrochemical performance Abstract.
The structure morphology and performance were characterized by XRD, SEM, charge-discharge tests, cyclic voltammetry (CV), AC impedance and the behavior of lithium insertion-extraction was also be discussed.
Fig. 2(a) shows that the pure NiO assumes a sheet structure.
Compared with the pure NiO sample, NiO/Co composite shows asymmetrical granular form, size is less than 5 mm, and the sheet structure of pure NiO was disappear completely.

Asphaltene average molecular structure model is usually said that the current widely used is Yan Defu proposed structure diagram (Figure 1).
Therefore, resins and asphaltenes have very similar structures.
Clay and stable water in oil emulsion stability of oil-water interface depends on the formation of composite structure, this structure can effectively maintain the particles in the oil-water interface, so that the emulsion stability.
Oilfield Chemistry, 1998,15 (1) :87-88 [3] Yuan Shi-Ling, Gui-Ying Xu.
Oilfield Chemistry, 1997,14 (3) :237-242, 256 [12] 23.

Synthesis of Phenolic Resin and Its Sand Consolidation Fusheng Zhang1,a , Jian Ouyang1,b, Ma Xintong 2,c, Xinfang Feng1,d 1 Oilfield Chemistry Key Laboratory, CNPC (Research Institute of Petroleum Exploration and Development, PetroChina ), 20 Xueyuan Road, Haidian district, Beijing 100083, China 2 Chemical engineering institute, East China University of Science and Technology, Shanghai 200237, China a zhfsh@petrochina.com.cn, b ouyj@petrochina.com.cn, c 785432084@qq.com, d fxf@petrochina.com.cn Keywords: Phenolic Resin, Sand Control Abstract.
According to phenolic resin curing mechanism, its structure was improved to enhance consolidation strength and decrease resin dosage, so costs of sand control was decreased remarkably. phenolic resin, which can has a higher consolidation strength at lower temperature, was prepared, the many factors on which effect on its consolidation strength was investigated detailedly.
The structure of phenolic resin was improved according to its curing mechanism, enhancing consolidation strength and decreasing resin dosage, so sand control cost was decreased remarkably Experimental Synthesis of Phenolic Resin Put phenol into a four-neck reaction flask equipped with a stirrer and a dropping funnel, next heat up to 45℃ to melt phenol, then join sodium hydroxide.
The structure of phenolic resin was improved according to the phenolic resin sand control mechanism, to increase the structural strength under the same strength.
Table 6 Effect of coupling agent dosage on consolidation strength Coupling agent dosage /% 0 0.5 1 1.5 2 2.5 Consolidation strength /MPa 8.10 8.90 11.60 12.18 11.32 11.76 Conclusion (1) According to the phenolic resin sand control mechanism, to optimize the structure of the phenolic resin and design the synthesis PF phenolic resin sand control agent.

They can affect the optical and electrical properties, as well as the morphological structures that should be considered for the synthesis processes [25].
Meanwhile, X-ray Diffraction (XRD) was utilised to determine the phase and structure of ZnO NPs at the examined temperatures.
Results and Discussion Morphological Structure and Optical Characterization of ZnO NPs at Different Annealing Temperatures.
Mondal, Advantages of ZnO nanotaper photoanodes in photoelectrochemical cells and graphene quantum dot sensitized solar cell applications, Journal of Electroanalytical Chemistry.813 (2018) 92–101
Chang, Effect of structure morphologies on hydrogen gas sensing by ZnO nanotubes, Materials Letters .230(2018) 48–52

At 300 °C, the structure phases observed for TiO2 was amorphous while Fe, N-TiO2 was anatase.
Meanwhile at 700 °C, all prepared photocatalyst consisted of mixed phase of anatase and rutile with a dominance of rutile structure.
Palmisano, Determination of the crystallinity of TiO2 photocatalysts, Journal of Photochemistry and Photobiology A: Chemistry, 367 (2018) 312-320
Yang, Effect of Fe-doping on the pore structure of mesoporous titania, Materials Science and Engineering: B, 134 (2006) 76-79
Myers, Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer, Analytical chemistry, 29 (1957) 760-762.

The structure, distribution and evolution of micro-crack within the mud-shale are studied in this paper.
In recent years, fractal theory has been widely used in physics, geology, biology, chemistry, and many other disciplines [2-5].
The tortuous path of the internal macroscopic micro-crack structure contains similar bent structure in the second level and they are very similar to each other as shown in Fig.1 and Fig.2.
This provides a new way to study the internal micromechanical damage mechanisms shale and establish of the relationship between internal structure changes and macroscopic mechanical response.
Structure, distribution and evolution of behavior of the micro-crack in the shale showing strong fractal features.

The phase compositions and crystalline structure cement/aluminium dross composites were studied by using x-ray diffraction (XRD) technique.
At present, there is an increase in interest on research areas dealing with green concreate structure.
The overall chemistry depends on the alloying elements present in the molten aluminium and the metallurgical practices [1].
The phase compositions and crystalline structure of cement-aluminium dross composites were studied by using X-ray diffraction (XRD) and scanning electron microscopy (SEM) was used for characterization of microstructure.