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Removal of Hexavalent Chromium on Chitosan-deposited Activated Carbon Jeong-Min Lee 1, a , K.Palanivelu2, 3, b and Young-Seak Lee 1, 3, c, * 1Department of Nano Technology, Chungnam National University, Daejeon 305-764, 220, Gungdong, Yuseong-Gu, Daejeon 305-764, Korea Korea 2 Centre for Environmental Studies, Anna University, Chennai 600 025, India 3 Department Fine Chemical Engineering and Chemistry, Chungnam National University, 220, Gung-dong, Yuseong-Gu, Daejeon 305-764, Korea a jeongmin80@hanmail.net, bkpvelu@hotmail.com, c, * youngslee@cnu.ac.kr Keywords: Activated carbon, Chitosan, Adsorption, Cr (VI) removal.
Specially, since AC has very high specific surface area and advanced pore structure, not only adsorption capacity is large, but also adsorption rate is fast.
Specific surface area, pore size distribution and pore structure were analyzed by using N2 adsorption (Autosorb-1, Quantachrome, USA) at 77 K.

The Remote Metrology of Water Pollution Source Online Monitor Based on 3G technology Yuebing Shaa, Hong Heb and Jianwen Shaoc Chemistry and Environment Metrology Department, Zhejiang Institute of Metrology, 222 Tianmu Mountain Road, China 310013 ashaybing@163.com, bhehonghz@126.com, cjianwenshao@126.com Keywords: 3G; Water pollution source online monitor; Data transmission unit; STM32 Abstract: In order to improve the efficiency of metrological ordinary work in water pollution source online monitor instrument and reduce the measurement personnel's labor intensity. 3G technology has been used to connect test instrument with the client's network through the study of the STM32 type microprocessor and analog-to-digital conversion to test instrument’s output current.
Fig.1 Remote metering system structure of water pollution source online monitoring instrument 4 ~ 20 mA current acquisition module The system’s hardware structure is shown in figure 2.

The homogeneous propellants have a uniform physical structure consisting of chemically bonded fuel and oxidizer ingredients forming a single chemical structure whereas in heterogeneous ones, the oxidizer and fuel are physically mixed but do not have chemical bonds between them.
Mader, Propellant Chemistry, Chimia, 58 (2004) 374-382

This technique has introduced to the aerospace industry for the inspection of composites and honeycomb structures and also offered important new capabilities for the non-destructive testing of tires.
Used with vacuum stress (actually only a small pressure change of 0.3-0.5 atm), Shearography images appear out of the plane strain deformations wherever there is a weakened bond or small quantity of entrapped air within the structure of the tire.
Grant: Rubber Chemistry and Technology Vol. 54-5 (1981), p. 1042-1050

And nanometer titanium dioxide (nm-TiO2) has more unique properties, such as the excellent capacity of photocatalysis and absorption of ultraviolet (UV) light because of its nano-structure.
Peng You et al [15] have shown that crystal nano-structure of mixed rutile/anatase could increase the light resistance to some extent.
Journal of Wood Chemistry and Technology, 2000, 20(2) ：205

Desulfurization of Model Gasoline by Adsorption Process with Ruthenium Ion Modified Y-zeolites Ting ting Lia, Fei Caob, Mei Xuec* School of Chemistry and Chemical Engineering, Inner Mongolia University, 235 West University Road, Hohhot, 010021, China a420984940@qq.com, b13624714002@163.com, csetsubai@sina.cn Keywords: Desulfurization, Thiophene, Metal ion, Y-Zeolite, Gasoline Abstract.
The XRD patterns of SbY-1, RuY-1, ZrY-1 and BiY-1 are similar to the original NaY-zeolite pattern, indicating that the original zeolite structure is retained after solid-state phase ion exchange followed by the heat treatment.
Above results indicate that a part of metal ion insert to the NH4Y zeolite structure, and the residual metal salts decomposes to the metal oxides phase after solid-state phase ion exchange reaction.

Mechanical Properties of Reproduced Historic Mosaic Mortar Pavla BAUEROVÁ1,2a, Pavel REITERMAN3,b*, Magdalena KRACÍK ŠTORKÁNOVÁ4,c and Martin KEPPERT1,d 1Czech Technical University in Prague, Faculty of Civil Engineering, Department of Materials Engineering and Chemistry, Thákurova 7, 166 29 Praha, Czech Republic 2Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prosecká 809/76, 190 00 Prague, Czech Republic 3Czech Technical University in Prague, Faculty of Civil Engineering, Experimental Centre, Thákurova 7, 166 29 Praha, Czech Republic 4Art & Craft Mozaika, z.s., Kapitulní 103/19, 252 62 Únětice, Czech Republic apavlabau@centrum.cz, bpavel.reiterman@fsv.cvut.cz, cmozaikart.cz@gmail.com, dmartin.keppert@fsv.cvut.cz Keywords: Linseed oil; mechanical properties; historic mortars.
This behavior is caused by formation of organic polymeric structure in the mortars with the high oil content.
Bezdička, Mixed lead carboxylates relevant to soap formation in oil and tempera paintings: the study of the crystal structure by complementary XRPD and ssNMR, Dalton Trans. 48 (2019) 12531-12540

Synthesis of D-A type organic molecules based on carbazole and phenothiazine for organic light-emitting materials Zebiao Tang 1,a, Xiaoxia Sun 1,b* Peilin Zhang 1,c 1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People’s Republic of China atangzebiao88@163.com; bsunxiaoxia77@126.com; cpeilin.zhang@agilent.com Keywords:Carbazole and Phenothiazine; Donor-Acceptor; Light-Emitting Material Abstract.
Introduction Organic conjugated molecules have attracted much academic and technological research attention during the past decade, attributing to their suitability in a broad range of applications, such as electrochromic cells, photovoltaic cells and organic light-emitting diodes.1-2 Especially, molecules with donor-acceptor architectures have received a significant amount of interest by researchers due to their advantages on physical properties easily being modulated through appropriate chemical modification to the structures of donors or acceptors.3-5 Compared with other materials, donor-acceptor materials could broadly provide large π-electron delocalization over the molecules to lead to desirable semiconductor properties for electrical and optical applications.
The fluorescence spectra of compounds have well-resolved vibronic structures in dilute THF solutions, as shown in Fig.1b.

In this work we have exploited the capacity of a crustacean shells’ known for its special chitinous structure: shrimp (Aristeus antennautus).
The infrared spectrum of the ShR material (Fig. 1) shows the presence of a peak at 1663 cm-1 due to the vibration of deformation of amine groups exiting in chitin’s structure.
Arabian journal of chemistry 9 (2016) 416-424.

This paper also investigates non-dendritic structure formation mechanism and refinement mechanism.
Experiments This study adopted self-made vertical electromagnetic stirring equipment, and the structure graph is shown in Figure 1.
The actual solidification process was a complex process of physical chemistry controlled by numbers of factors.