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Synthesis of Curcumin Analogs Under Ultrasound Irradiation for Inhibiting α-Amylase LANA Tantriasa D.T.1,a, CHAIRIL Anwar1,b* and ENDANG Astuti1,c 1Departments of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Indonesia alanatantriasa@gmail.com, bchanwar@ugm.ac.id, cendangastuti.ugm@gmail.com Keywords: Synthesis, curcumin analog, ultrasound, α-amylase.
Curcumin has biological properties because of its special characteristic structure.
Therefore, it leads the researchers to modify the structure of curcumin to increase the bioavailability and reduce rapidity of its metabolism.
Analyses of IR and MS were used to confirm the structure of the compound.
Wingender, Chemistry and Biochemistry of Microbial α‐Glucosidase Inhibitors, Angew.

Cahya1,b and Deana Wahyuningrum1,c 1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, Indonesia a*alni@chem.itb.ac.id, bangelina.cahya@gmail.com, cdeana@chem.itb.ac.id Keywords: Ionic liquids, cyclization, condensation, diketone, imidazolium Abstract.
The structure of the synthesized ILs and the cyclization product were characterized by FT-IR and 1H-NMR spectroscopy.
Structures of imidazolium based ionic liquids In this research, we used microwave radiation as energy source to sinthesize various imidazolium based ionic liquids.
The reaction scheme of imidazolium based ILs synthesis The FTIR and 1H-NMR spectra were used to identify the chemical structure of the synthesized ILs.
P., Frey E.: The Selection and Reduction of Organic Solvents in Pharmaceutical Manufacture, paper 17 presented at the American Chemical Society 10th Green Chemistry and Engineering Conference, Washington 2006 [2] Welton T., 1999 Room-Temperature Ionic Liquids.

The first is the sensing technology, in which ultrasonic-based sensing technology for scour monitoring of bridge piers, electro-chemistry-based distributed concrete cracks and automobile wireless sensors are introduced.
This technology also has been widely applied in practical engineering structures, in particular in China.
The remote-control robot can move on the ferromagnetic surfaces of complicated geometric structures with the magnet-wheeled and place the wireless sensors on the structure accurately by mechanical arm as shown in Fig. 2.
The structure vibration data is acquired by the wireless sensor and transmitted back to base station.
Errors caused by data loss inevitably affect the data analysis of the structure and subsequent decision making.

Introduction Carbon is the primary material for life and the basis of organic chemistry.
Figure (3): Energy band structure for (8 8) CNT which is an armchair one.
Figure (4): Band structures of zigzag CNTs for (a) (13 0) and (b) (12 0) CNTs.
Figure (5): Band structures of (a) (10 4) CNT and (b) (10 5) CNT.
Fig. 5 are schematic of band structures of chiral carbon nanotubes in the region between ±π/T.

Introduction With its unique characteristics in band position and surface structure, TiO2 provides a variety of promising applications.
However, the post-thermal treatment is indispensable for the most EPD methods to get TiO2 nanorod structures from the precursors.
For the arrays derived from 7 nm-sized TiO2, as shown in Fig. 3, a kind of broken-tube structure is shown here and there.
The TiO2 nanorod arrays from 4.5 nm-sized titania particles presented so robust structure that they were not eroded by the sonication for 15 min.
Photobiol.A: Chemistry.

Ettringite crystals are evenly distributed throughout the structure of the sample.
Taylor, Cement Chemistry, Academic Press, London, 1990
Samchenko, Formation and genesis of the structure of cement stone, Moscow: Moscow State University of Civil Engineering, IP Media, DAS, DIA, 2016.
Belentsov, The relationship of the structure of cement stone with its basic structural properties, Cement and its application. 1 (2007) 86-87
Yudovicha and et al, Hydration doping of cements with bents, in: Abstracts of reports at the VI All-Union Scientific and Technical Conference on Cement Chemistry and Technology, Moscow: VNIIESM. (1982) 94–98

This research method considers materials with model representations of the atomic-molecular structure.
The use of epoxy oligomers in the preparation of composites poses new challenges associated with the study of the relationship "structure-physicomechanical and physicochemical characteristics-synthesis of materials with desired properties."
This research method considers materials with model representations of the atomic-molecular structure, in contrast to static methods, which do not take into account the structure and structure of the materials under study, but use model representations of a homogeneous continuous all-over body.
In this case, the assumption is made that there were no significant chemical reactions between the substrate material and the hardener during the experiment, leading to structural changes in the structure of the TETA hardener itself.
M: Chemistry, 1966, 768 p

Granite as the product of the specific geological background, characteristics of its petrography, mineralogy and rock chemistry recorded structural geology background.
Structure of the rock is porphyritic granitic structures.
Traces of mixed rock,the gneissic-like structure, and shadow-like structure made of biotite, muscovite, plagioclase, microcline feldspar, etc.in local areas of the granite body were retained.
Characteristics of Geochemistry Six weak alteration and representative sample are tested for rock chemistry, trace elements and rare earth elements.
Change of the particle size and structure of the granites is from coarse-grained porphyritic structure to coarse granular structure and fine granular structure.

The only crystal structure for pure C7 is orthorhombic one, whereas C8 is expected to form a triclinic one [6].
However, when it comes to mixed alkanes, the structure of a solvent is adopted.
Shorter molecules occupy the position of longer ones and the lamellar structure of the crystal is maintained.
Mozumder: Radiation chemistry (Academic Press, 1999)
Hirade: Positron Annihilation in Radiation Chemistry, in: Charged particle and photon interactions with matter.

Results and Discussion Phase structure and physical properties.
The presence of these diffraction peaks suggested that the synthesized MCM-41 has highly degree ordered hexagonal structure.
However, by introducing mesoporosity into the structure, the surface area of BCN can be increased from 11 to 287 m2 g-1.
Twitchett, Chemistry of the production of organic isocyanates, Chem.
Carlsson, Graphitic carbon nitride materials: variation of structure and morphology and their use as metal-free catalysts, J.