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Zhou E.,Baoji Vocational Technology College | Zhang J.,Wuhan University | Lu Y.,Wuhan University | Dong C.,Wuhan University
Arkivoc | Year: 2014

The novel, recyclable C2-symmetric chiral shift reagents bearing both squaramide and indanol groups have been synthesized. These squaramides were examined as chiral shift reagents, and they have a wide recognition towards chiral carboxylate anions. The squaramide derived from (1S, 2R)-1-amino-2-indanol can distinguish the absolute configuration of the guest carboxylate anion. © ARKAT-USA, Inc.


Zhou E.,Baoji Vocational Technology College | Han X.,Wuhan University | Li Y.,Wuhan University | Guo C.,Wuhan University | Dong C.,Wuhan University
Heterocycles | Year: 2015

The novel synthesis of phenylselanylisochroman-1-ones was achieved by selenolactonization of styrene-typed carboxylic acids and phenylselenenyl chloride in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO). The reactions give excellent yields with high exo-selectivity. © 2015 The Japan Institute of Heterocyclic Chemistry.


Zhou E.,Baoji Vocational Technology College | Liu B.,Wuhan University | Dong C.,Wuhan University
Tetrahedron Asymmetry | Year: 2014

A set of BINOL-quinine-squaramides were synthesized, and then used as organocatalysts to promote the catalytic enantioselective Michael addition reaction of 2-hydroxy-1,4-naphthoquinone to nitroalkenes with excellent yields and ees (up to 99% yield and 93% ee) at low catalyst loading (0.5 mol %). © 2013 Elsevier Ltd. All rights reserved.


Yang Y.-N.,Nantong University | Yang Y.-N.,Baoji Vocational Technology College | Wan W.-Q.,Clinic of the 61398 Army of PLA | Zhu D.-D.,Nantong University | And 3 more authors.
World Chinese Journal of Digestology | Year: 2013

AIM: To observe the effect of lipopolysaccharide (LPS) on the expression of proteins associated with cell activation and apoptosis in human hepatic stellate cell line LX-2. METHODS: The expression of proliferating cell nuclear antigen (PCNA), Desmin and active Caspase 3 proteins was detected by Western blot in LX-2 cells treated with LPS. RESULTS: PCNA and Desmin expression in LX-2 cells could be regulated by LPS stimulation. No expression of active Caspase 3 was detected in LX-2 cells stimulated with low-concentration LPS or with LPS for a short period; however, the expression of active Caspase 3 could be up-regulated by stimulation with high-concentration LPS or with LPS for a long period. CONCLUSION: The proliferation, activation and apoptosis of LX-2 cells can be induced by LPS under appropriate conditions. © 2013 Baishideng Publishing Group Co., Limited. All rights reserved.


Zheng P.,Chang'an University | Pan Z.,Baoji Vocational Technology College | Li H.,Chang'an University | Bai B.,CAS Northwest Institute of Plateau Biology | Guan W.,Chang'an University
Journal of Materials Science: Materials in Electronics | Year: 2015

Effect of different type of organic or inorganic additions (formic acid, AgNO3, NaCl) on the photocatalytic reduction of copper and photooxidation of cyanide with illuminated TiO2@yeast was studied in this work together with the impact of solution pH values and contact time. The results indicated that pH values exhibited a great effect on the adsorption and photocatalytic performance of cyanide and copper because the surface charge of the TiO2@yeast and the existence form of cyanide and copper are highly pH dependent. The optimal adsorption and photo-oxidation of cyanide was observed at pH 2.0 while the best adsorptive and photocatalytic efficiency for copper was achieved at pH 5.0 within the studied range. The addition of formic acid increased the photo-reduction rate of copper and inhibited the photo-oxidation of cyanide. AgNO3, as electron acceptor, restrained the Cu(II) reduction from 75.0 to 30.5 %, whereas accelerate the photo-oxidation of cyanide. Besides, the presence of chloride ions retarded the removal efficiency of both cyanide and copper. The first-order kinetic model well described the experimental data. One possible mechanism of the effect of additives on copper and cyanide degradation was discussed. © 2015, Springer Science+Business Media New York.


Guo Y.,Shaanxi Polytechnic Institute | Xu X.,Baoji Vocational Technology College
Lecture Notes in Electrical Engineering | Year: 2013

In the traditional sports games management model, there are huge organizational structure, low efficiency, slow information response, unreasonable resource configuration, trivial and miscellaneous data processing, inaccurate information analysis, and other problems. In this paper, through the analysis on the functions, structure and characteristics of Geographic Information System (GIS), the application fields of GIS are discussed and analyzed, and also the authors propose that it is feasible to apply geographic information system to the sports field and especially large sports games. According to the analysis on the feasibility of applying the geographic information system in the management systems of large sports games, an operational model of GIS management system of large sports games is constructed. With this system, hopefully, the management efficiency of China's large sports games can be improved greatly, and simultaneously the modernization, information and organizational operation of large sports games can be increased. © 2013 Springer-Verlag.


Lou G.-X.,Baoji Vocational Technology College | Zhang J.-F.,Baoji Vocational Technology College | Shangguan X.-D.,Baoji Vocational Technology College | Xiao X.-H.,Baoji Vocational Technology College | Dang S.-L.,Baoji Vocational Technology College
Fangzhi Gaoxiao Jichukexue Xuebao | Year: 2011

A carbon ionic liquid electrode (CILE) , which was fabricated by mixing hydrophobic room temperature ionic liquid, n-butyl pyridinium hexafluophosphate ( [BuPy] [PF 6] ),with graphite powder, was used to investigate the electrochemical behaviors of paracetamol in 0.1 mol/L acetate buffer solution (pH 4.7) by cyclic voltammetry (CV) , square wave voltammetry (SWV) and chronocoulometry. The peak-to-peak potential separation ( ΔE p ) of paracetamol was 0.088 V with scan rate of 0.1 V/s. The results showed that CILE exhibited better electrocatalysis for redox of paracetamol. Diffusion coefficient (D) was calculated as 1.214 × 10 -7 cm 2/s. The oxidation peak current versus concentration of paracetamol at CILE showed linearity in the range of 0.5-10.0 μmol/L (r =0.9988) with a detection limit of 0.01μmol/L (S/N = 3). The proposed method was applied to determination of paracetamol in tablets and urine samples successfully. In addition, CILE was inexpensive, stable, repeatable and easy to be fabricated.

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