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By this method, some three-dimentional branch or crosslink structure was introduced to the linear aliphatic chain of PBS.
The sequence distribution, GL fraction, crystal structure and degradability were investigated.
It was widely recognized that mechanical properties and biodegradability of polymers were mainly depend on their structure, such as chemical structures and chemical compositions.
The crystal structure after being degraded is detected by WAXD.
Fig.2 Crystal structure of copolyesters Composition Degradation Fig.3 shows the weight loss of the copolyesters after being buried in the compost for 12 weeks.

The structures of composites were examined by using a Fourier transform infrared spectrometer (FTIR; Digilab-FTS60).
Pore structure and surface chemical properties of catalysts can affect their catalytic activities.
The self-assembly and formation process of HPW/SiO2–EISA structure is illustrated in Fig.1.
In addition, the strong interaction between basic –NH2 and HPW also cause the change of HPW molecule structure.
In the EISA process, the Keggin structure of HPW is preserved in the composite.

Tadokoro2,b 1Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan 2Department of Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan amatsui@ldp.phys.tohoku.ac.jp, btadokoro@rs.kagu.tus.ac.jp Keywords: Proton Conduction, Confined Water, Microwave, Infrared Spectrum, Porous Crystal.
Triple layered hydration structure called water nanotube is formed in the nanochannel of new molecular porous crystal {[CoIII(H2bim)3](TMA) 20H2O}n.
The formation of regulated water network is identified by the infrared spectroscopy, X-ray and neutron crystal-structure analyses.
Introduction Fig. 1 Crystal structure of the INT state determined by X-ray crystal structure analysis.
The local structure of WNT as well as INT consequently consists of the hydrogen-bonded tetrahedral coordination, and holds a rigid character even at room temperature.

Therefore, the structure of the Fe complexes of the ligands L2 and L3 can be represented schematically in Fig. 1.
Structure of Fe complexes of L2 and L3, modified from previous work [39].
Fabris, Multiparametric Assessment of Gold Nanoparticle Cytotoxicity in Cancerous and Healthy Cells: The Role of Size, Shape, and Surface Chemistry, Bioconjug Chem 28 (2017), pp. 449–460
Mathur, Interdependence of Charge and Secondary Structure on Cellular Uptake of Cell Penetrating Peptide Functionalized Silica Nanoparticles, Nanoscale Adv 2 (2020), pp. 453–462
Sankpal, Synthesis of New Sulphanilamide Based Schiff Base Nickel Complexes with Study of its Antibacterial Activity and Nanoparticle Synthesis, Rasayan Journal of Chemistry 13 (2020), pp. 282–290

The effects of temperature and water chemistry on BaSO4 scale have been investigated by using the conductivity method in this work.
The corrosion film of N80 in formation water with PESA has a denser structure, so the corrosion rate was mitigated.

It is important to create materials, which allow tuning the electron band structure on demand, a process called band-structure engineering.
(a) (b) (c) (d) The above shown “H on N structure” has 0.4 eV lower energy than “H on B structure” (with hydrogen atoms bonded to N atoms, not shown here).
The above discussed atomic structure determination through the system total energy (TE) minimisation gives the microscopic geometry at the absolute zero temperature and does not indicate whether the structures are stable.
At the right, panel (b) shows vibrational frequencies density of states for the same structure.
Smith, Phosphorene: Fabrication, Properties, and Applications, The Journal of Physical Chemistry Letters 6 (2015) 2794-2805

Micro structure of resin carbon was analyzed by XRD.
The XRD analysis shows the crystal structure of resin carbon tends to regularization with the increase of carbonization temperature.
Results show that carbonization temperature has a great influence on the micro structure of resin carbon [4-8].
Crystal structure was studied as following section.
Lazarev: Journal of Physical Organic Chemistry Vol. 22(2) (2009), p. 145

This is chiefly due to the geological structure of the Sudetes and the Fore-Sudetic block, which is propitious to radon accumulation in many environments.
Owing to the geological structure of Poland [3-5], practically the country’s only large radon-prone area lies in its south-western part.
Komosa, Radon concentration in basements of old town buildings in the Lublin region, Poland, Journal of Radioanalytical and Nuclear Chemistry 247 (1) (2001) 53-56
Jeričević, Factors controlling temporal variability of near-ground atmospheric 222Rn concentration over central Europe, Atmospheric Chemistry and Physics 14, (2014) 9567-9581
Mazurek, Radon (222Rn) in underground drinking water supplies of the Southern Greater Poland Region, Journal of Radioanalytical and Nuclear Chemistry 299 (2014) 1307-1312

This research was focused on the structure of ground surface degenerating layer, surface generation mechanism and characteristics of nanocomposite ceramic parts.
Structure Characteristics of Ground Surface of Nanocomposite Ceramics Preparation of Nanocomposite Ceramic Exemplar.
(a) Microcrack generated in intragranular structure (b) Intergranular dislication ZrO2 Fig. 3 TEM micrograph of Al2O3-ZrO2(n) Intergranular sliding was another deformation mechanism, as shown in Fig. 3 (b).
Phase structure was measured by X-ray diffraction, and the test parameters are shown in table 1.
Hu: Journal of Guangzhou Chemistry Vol. 25/3(2000), p.33

Results and discussion The structure and property of joint The strength of W6Mo5Cr4V2 high speed steel and 45 steel at room temperature are 758～798MPa and 650～670MPa respectively.
Because fine-gained superplastic materials have ultrafine, equiaxial and stabile grain structures, which it is easy to form short and many grain boundaries.
Fig.6 is illustrated microstructure of joint after heat treatment. 45 steel side changes into temper slice-state pearlite structure and HS side changes into temper martensite and carbonization structure.
So the chemistry component and structure gained melioration and the joint quality has advanced in two sides of interface.
[4]To improve structure and property of joint, a reasonable heat treatment scheme is gained：580℃ (preheat)+800℃(preheat)+1200℃×(5～10)min(quenching)+3×560℃×60min(temper).