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Online since: April 2020
Authors: Bambang Purwono, Muhammad Idham Darussalam Mardjan, Linda Ekawati
Synthesis N-Phenyl Pyrazoline from Dibenzalacetone and Heme Polymeration Inhibitory Activity (HPIA) Assay Linda Ekawatia, Bambang Purwonob* and Muhammad Idham Darussalam Mardjanc Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Jl.
The structure of products was characterized by FT-IR, GC-MS, DI-MS, 1H- and 13C-NMR The result of heme polymerization inhibitory activity assay showed that IC50 of B1 and B2 1.26 and 0.79 mM while quinine 1.26 mM.
General structure of dibenzalacetone.
The purity and structures of all synthesized compounds were confirmed by TLC and spectroscopic techniques, respectively.
Li, Structure-activity relationship studies of curcumin analogues, Bioorg.
Online since: February 2019
Authors: A.A. Belov, O.O. Shichalin, Evgenii K. Papynov
Formation of a monolith structure of high-temperature glass ceramic matrices based on NaA zeolite was corroborated by the results of microscopy studies.
These matrices have s structured (porous) volume formed by packing of initial powder consolidated particles.
In opposite, high-temperature matrix samples have a nonporous monolith structure.
Kirilkin, Phosphorus-containing cesium compounds of pollucite structure.
Sakharov, Phosphate Ca1/4Sr1/4Zr2(PO 4)3 of the NaZr2(PO4)3 structure type: Synthesis of a dense ceramic material and its radiation testing.
Online since: September 2018
Authors: Sergey Shevelev, Valeria Kostenko, Aleksey Kondratyuk, Sergei A. Ghyngazov, Anatoliy I. Kupchishin
It is of interest to control the structure and properties of this type of ceramics by ion-processing methods.
However, because of its specificity, HPPIB is able to more efficiently modify the structure of materials.
Kulkov, Structure, phase composition and mechanical properties of ZrO2-based nanosystems, Physical Mesomechanics 11 (2008) 29-41
Kostikov, Influence of Technological Factors on Structure and Properties of Alumina-Zirconia Ceramics, Advanced Materials Research 1040 (2014) 845–849
Marques, Oxygen Nonstoichiometry, Conductivity, and Seebeck Coefficient of La0.3Sr0.7Fe1−xGaxO2.65+δ Perovskites, Journal of Solid State Chemistry 167 (2002) 203-213
Online since: February 2019
Authors: Hanan Fakhruldi, Foo Yoong Yow, Norzafirah Razali, Yaleeni Kanan Dasan, Hasnah Mohd Zaid
Because these properties are structured and size-dependent, it is therefore important to develop new routes of synthesis by which the crystalline structure, the size and the shape of TiO2 nanocrystals can be readily manipulated.
The stability of bulk nanoparticles is closely related with the phase structure of TiO2.
In the process of TiO2 synthesis, the shape and crystal structure of the material significantly depends on the raw material used.
From Fig. 1, the peak at 25.45° confirms the TiO2 anatase structure.
Murugesan, Sol–gel preparation and characterization of nanosize TiO2: Its photocatalytic performance, Materials Chemistry and Physics. 104 (2007) 454–459
Online since: August 2013
Authors: Joanna Strug, Barbara Strug
It has been researched mainly in the domain of bioinformatics and chemistry [2,15,18,36,40].
Different kernels for structured data, like tree and graph kernels were researched [10,3,13,14,20].
Then these functions are turned into a kernel function on the whole structure by using a convolution operator.
Gartner: A survey of kernels for structured data.
Haussler: Convolutional kernels on discrete structures.
Online since: July 2011
Authors: Zhen Jun Wu, Jian Min Yuan, Wen Sheng Li
Fabrication of sandwich-like hydroxyapatite/Al2O3/Si(100) biocomposite Zhen-Jun WU 1,*, Jian-Min YUAN 2, Wen-sheng LI 3 1, 3College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P.
The embedding of HA outer coating into porous anodic Al2O3 results in a sandwich-like structure in the finally obtained HA/Al2O3 composite biocoating on Si(100).
So, it still keeps interesting to prepare HA coatings with different structures using other available methods, for example, electrodeposition is a good approach for the fabrication of uniform HA coatings on substrates even with complex shape under mild conditions [10].
A sandwich-like structure of HA/Al2O3/Si is finally obtained in this work.
It is expected that the resultant sandwich-like structure of HA/Al2O3/Si presented in this work would combine excellent biocompatibility of HA, good protective and dielectric performances of anodic Al2O3, and highly sensitive biosensing capability of Si effectively, and thus promote the in vivo applications of silicon-based biodevices coated with HA in the field of medical diagnosis and treatments.
Online since: July 2017
Authors: Jing Zhe Zhao, Yue Hong Song, Zhi Fang Huang, Xin Li Hao
China 3Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei GEO University, Shijiazhuang 050031, P.R.
China 4College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R.
The as-prepared Mn3O4 nanoparticles extended sphere-like structures with sizes of around 80 nm.
Results and Discussion Structure and Morphology XRD pattern of the typical sample (obtained at 30 oC for 1.5 h) is shown in Figure 1a.
In order to investigate the structure difference of the two samples (sphere-like and octahedral Mn3O4 nanoparticles), FT-IR analysis was made on the samples.
Online since: September 2008
Authors: Eri Umebayashi, Norihiro Kato, Tsukasa Ikeda, Wakaaki Murai, Kazuho Suguro, Tomohiro Morohoshi
Rapid Shrinking of Porous Hydrogel Prepared by Ice Templating Eri Umebayashi 1 , Wakaaki Murai 1 , Kazuho Suguro 1 , Tomohiro Morohoshi 2 , Tsukasa Ikeda 2 , and Norihiro Kato 1,a 1 Department of Advanced Interdisciplinary Sciences, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya 321-8585, Japan 2 Department of Material and Environmental Chemistry, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya 321-8585, Japan a katon@cc.utsunomiya-u.ac.jp Keywords: Organic-Inorganic Hybrid, Stimuli-Responsive Gel, Thermally Sensitive, Freezing, Fast Response, Ice Template Abstract.
To control and maximize the shrinking rates of thermo-sensitive organic-inorganic (O-I) hybrid gels, microporous structure of gels could be controlled by ice-templating.
Formation of sufficiently porous structure was effective to overcome the diffusion-limited network motion and prepare fast responsive gels [1].
The generated porous structures of the FD-treated gels were observed by SEM (Fig. 2).
The three-dimensional network maintains the honeycomb-like structure after re-hydration, apparently with physical cross-linking via hydrophobic interaction and entanglement between polymer chains [6, 7].
Online since: June 2012
Authors: Yong Yang, Cai Jin Wu, Zheng Fei Ma
A lot of research, one of which is to perfect the inlet structure, has been carried out in order to improve separation efficiency.
The cyclone is meshed into 5 sub-regions by the block-structured grid method.
Results and Discussions Effect of Inlet Structure on Axial Velocity.
Distributions of tangential velocity in different double-inletcyclone models at z=250mm Effect of Inlet Structure on Radial Velocity.
Distributions of radial velocity in cyclones with different inlet structures at x=0 surface Single-inlet (a), 6 °(b), 8 °(c), 10 °(d), 12 °(e), 15 °(f) Effect of Inlet Structure on Pressure Drop.
Online since: September 2011
Authors: Bulent Önay
To acquire a balanced high temperature mechanical and oxidation properties, these materials generally have multiphase and multicomponent structures.
As a result of extensive research and development work conducted on their chemistry, production and manufacturing, both compositions and microstructures of the superalloys have changed gradually throughout the years.
It involves the production of materials with composite structures, formed in-situ, by bringing together the refractory metal component with intermetallic phases [4,10].
Thus, high temperature oxidation resistance of this new class of materials is determined by their multi-phase and multi-component structures.
This internal structure observed for the oxidized TiB2 sample is consistent with the mechanistic model mentioned above.