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Facile synthesis of microporous carbon through a soft-template pathway and its performance in desulfurization and denitrogenation

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Journal of Natural Gas Chemistry 2010年第5期19卷 471-476页

作者： Bo Sun, gang li Xiaoxing wang State Key Laboratory of Fine Chemicals Department of Catalytical Chemistry and Engineering Dalian University of Technology Dalian 116012 Liaoning China

Wormlike/lamellar microporous carbons were prepared by using long alkyl chain primary amine hydrochloride as the template and resorci- nol/formaldehyde as the carbon source under highly acidic conditions. The template can be eliminated by high temperature treatment under an inert atmosphere. The obtained carbon materials were characterized by N2 adsorption-desorption, transmission electron microscopy, ther- mogravimetry and scanning electron microscopy. The results show that dodecylamine hydrochloride surfactant can be used as the template of wormlike micropores structure while octadecylamine hydrochloride results in both lamellar and wormlike micropores. The obtained carbon materials have the similar pore size in the range of 0.5-0.59 nm, but with various morphologies such as monolith, spheres, and coralline. The microporous carbon obtained from dodecylamine hydrochloride surfactant shows good adsorption performance to remove the refractory sulfur compounds and nitrogen-containing compounds in fuel.

关键词： primary amine hydrochloride organic organic self-assemble microporous carbon adsorption

Sustainable development of China's commercial vehicles

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Advances in Manufacturing 2015年第1期3卷 37-41页

作者： li-gang wang Ning Zhang Society of Automotive Engineers of China China Auto lightweight Technology Innovation Strategic Alliance

Automobiles are the major contributor to fuel consumption and emission of pollutants. The growth of the vehicle fleet has also placed enormous pressure on China＇s energy supply and environment. Thus sustainable development of the Chinese automotive industry must pay significant attention to fuel-saving and emission-reduction of vehicles. Although commercial vehicles make up only about 20% of the entire automobile fleet, their contribution to energy-consumption and emission of pollutants is significant. Thus, priority should be given to fuel-saving and emission-reduction of commercial vehicles. As a result of concerted efforts by Chinese government, industry and enterprises, great progress has been made in technologies concerning new-energy, intelligent and lightweight auto- mobiles. However, compared with developed countries, the level of lightweighting of commercial vehicles produced in China remains comparably low. This means that great potential for development of lightweight commercial vehicles in China exists and it will be an efficient path towards fuel-saving and emission-reduction.

关键词： Commercial vehicles. Fuel-saving.Emission-reduction - lightweight

ANTI-PLANE ANALYSIS FOR ELliPTICAL INCLUSION IN MAGNETOELECTROELASTIC MATERIALS

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Acta Mechanica Solida Sinica 2009年第2期22卷 137-142页

作者： gang li Baolin wang Jiecai Hart Shanyi Du Graduate School at Shenzhen Harbin Institute of Technology Harbin 150001 China

This paper considers the multi-field coupling in magneroelectroelastic composite materials consisting of the inclusion and the matrix are magnetoelectroelastic materials. The mechanical,electric and magnetic fields around an elliptical cylinder inclusion are formulated by complex potentials. Inside the inclusion,the strain,electric and magnetic fields are found to be uniform and vary with the shape of the ellipse. When the inclusion is reduced to a crack,along the interface,the strain,electric field strength and magnetic field strength equal the corresponding remote ones,which can be used as the boundary condition. Special cases,such as a rigid and permeable inclusion,a soft and impermeable inclusion,a line inclusion and a crack problem are discussed in detail.

关键词： fracture mechanics magnetoelectroelastic composites crack inclusion

Development of Near Infrared Spectroscopy for Rapid Quality Assessment of Red Ginseng

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Chemical Research in Chinese Universities 2009年第5期25卷 633-637页

作者： NIE li-xing wang gang-li liN Rui-chao National Institute for the Control of Pharmaceutical and Biological Products Beijing 100050 P. R. China

Near infrared spectroscopy（NIRS） was developed as a rapid analysis method for the qualitative and quantitative assessment of the quality of red ginseng. Discriminant analysis（DA） based on principal component analysis and Mahalanobis distance was used to distinguish red ginseng from counterfeits non-destructively. The result shows that the proposed method could distinguish red ginseng from counterfeits correctly and no misclassified sample was found in both training and test sets. The partial least squares（PLS） algorithm was used to predict the sum of ginsenosides Re and Rgl and the content of ginsenoside Rb1. Two calibration models were developed to correlate NIR spectra with the reference values determined by HPLC method. The correlation coefficient（R）, the root mean square error of calibration（RMSEC） and the root mean square error of prediction（RMSEP） were as follows： R=0.9827, RMSEC=0.0163%, RMSEP=0.0250% for the sum of ginsenosides Re and Rgl; R=0.9869, RMSEC=0.0156%, RMSEP=0.0256% for content of ginsenoside Rb1. The overall results demonstrate that NIRS coupled with chemometrics could be successfully applied as a rapid, precise and cost-effective method not only to identify the red ginseng from counterfeits but also to determine simultaneously some chemical compositions in red ginseng.

关键词： Near infrared soectroscopy Red ginseng Discriminant analysis Partial least squares

Preparation of a kind of mesoporous carbon and its performance in adsorptive desulfurization

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Journal of Natural Gas Chemistry 2009年第3期18卷 365-368页

作者： Haiyun Zhou gang li Xiaoxing wang Changzi Jin Yongying Chen State Key Laboratory of Fine Chemicals Department of Catalysis Chemistry and Engineering Dalian University of Technology Dalian 116012 Liaoning China

Carbon materials were prepared using mesoporous silica HMS with different pore sizes as the hard templates and water-soluble phenolic resin as the carbon source. The obtained materials were characterized by powder X-ray diffraction, transmission electron microscopy and N2 physical adsorption, and were used in adsorptive desulfurization. It has been shown that the carbon material prepared using HMS with larger pore size （〉3 nm） presented uniform wormlike mesopore of 2.3 nm and large BET surface area （1903 m2/g）. The mesoporous carbon was an excellent adsorbent to remove the refractory sulfur compound in diesel, especially dibenzothiophene and 4, 6-dimethyldibenzothiophene.

关键词： phenolic resins HMS wormlike mesopore mesoporous carbon

Influence of HLA-DRB1 alleles and HBV genotypes on interferon-α therapy for chronic hepatitis B

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World Journal of Gastroenterology 2005年第30期11卷 4753-4757页

作者： Rui-Hai Chu li-Xian Ma gang wang li-Hua Shao Department of Infectious Diseases Qilu Hospital of Shandong University Jinan 250012 Shandong Province China

AIM. To investigate the influence of HLA-DRB1 alleles and HBV genotypes on inberferon-α therapy for chronic hepatitis B. METHODS： HLA-DRBI＊03, ＊07, ＊09,＊12, ＊15 alleles were determined using polymerase chain reaction/sequence specific primer （PCR/SSP） technique in 126 patients with chronic hepatitis B and 76 normal control subjects in Shandong Province, and HBV genotypes were determined by nested-PCR analysis using type-specific primers in 126 patients. RESULTS： The positivity of HLA-DRB1＊07 allele in chronic hepatitis B group was significantly higher than that in normal control group （X^2 = 6.33, P〈0.025, RR = 2.37）. Among the 126 patients, genotype B was found in 38 （30.2%）, genotype C in 69 （54.8%）, and mixed genotype （B＋C） in 19 （15.0%）, genotypes D-F were not found. Among the 46 DRB1＊07（＋） patients, 7 were responders and 39 were non-responders among them （X^2 = 6.71, P〈0.05）. The positivity of HLADRB1＊07 and prevalence of HBV genotype C were significantly higher in non-responders than in responders. CONCLUSION： High positivities of HLA-DRB1 ＊07 allele and HBV genotype C are closely associated with the lower response to interferon-α therapy for chronic hepatitis B.

关键词： HLA-DRB1 alleles HBV genotypes Interferon-α therapy Chronic hepatitis B

Expression of second mitochondria-derived activator of caspases, X-linked inhibitor of apoptosis protein, and caspase-3 in pituitary adenomas

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Neural Regeneration Research 2011年第7期6卷 546-552页

作者： Dong li gang Huo liang wang Qinglin Feng Maoyuan Tang Department of Neurosurgery First Affiliated Hospital Chongqing Medical University Chongqing 400016 China

Studies concerning correlations between pituitary adenomas and cell apoptosis have mainly focused on upstream apoptosis signaling, but seldom on downstream mediators. In the present study, second mitochondria-derived activator of caspases （Smac）, X-linked inhibitor of apoptosis protein （XIAP）, and caspase-3 protein were qualitatively analyzed using immunohistochemistry, and quantified by western blot. Smac, XIAP, and caspase-3 mRNA expressions were detected by reverse transcription-PCR. Results showed that XIAP protein and mRNA expressions were greater in the invasive pituitary adenoma group compared with the noninvasive pituitary adenoma group. However, Smac and caspase-3 protein and mRNA expressions were lower in the invasive pituitary adenoma group compared with the noninvasive pituitary adenoma group. In the invasive pituitary adenomas, Smac expression was positively correlated with caspase-3 protein and mRNA expression （Protein： r = 0.55, P 0.01; mRNA： r = 0.50, P 0.01）. Smac and caspase-3 expressions were negatively correlated with XIAP protein and mRNA expression （Protein： r = -0.56, -0.64, P 0.01; mRNA： r = -0.69, -0.67, P 0.01）. However, no significant differences in correlation among Smac, XIAP, and caspase-3 were detectable in noninvasive pituitary adenomas. These data indicated that high expression of XIAP and low expression of Smac and caspase-3 suppressed cell apoptosis and led to enhanced invasiveness of pituitary adenomas. Thus, Smac, XIAP, and caspase-3 may be useful markers in determining the invasive behavior of pituitary adenomas.

关键词： second mitochondria-derived activator of caspases X-linked inhibitor of apoptosis protein caspase-3 pituitary adenoma neural regeneration invasiveness

Crystal Structure and Theoretical Calculation of N-[4-(2-Methoxyphenoxy)]phenyl Acetanilide

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Chinese Journal of Structural Chemistry 2010年第7期29卷 1077-1083页

作者： ZHANG Cheng-gang li Quan wang Bi-Qin ZHAO Ke-Qing College of Chemistry and Material Science Sichuan Normal University Key Laboratory of Advanced Functional Materials Sichuan Higher Education System Chengdu 610066 China

N-[4-（2-Methoxyphenoxy）]phenyl acetanilide has been synthesized and its structure was determined by X-ray diffraction analysis with a = 0.6152（4）, b = 1.1728（4）, c = 1.2367（4） nm, α = 91.34（3）, β = 93.22（4）, γ = 102.61（3）°, V = 0.8688（7） nm3 and Dc = 1.274 Mg/m3. Theoretical investigations on the title compound were carried out by full optimization on its structural unit at the B3LYP/6-31G＊＊ level. And ultimately, the infrared, Raman spectra, electronic absorption spectra, and the relationships between temperature and thermodynamic functions （Hm, Sin, Cpm） were obtained.

关键词： phenyl acetanilide crystal structure spectra thermodynamic properties

Spatial-dependent probe transmission based high-precision two-dimensional atomic localization

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Communications in Theoretical Physics 2021年第4期73卷 69-74页

作者： Muhammad Idrees Humaira Kalsoom Bakth Amin Bacha Arif Ullah li-gang wang Zhejiang Province Key Laboratory of Quantum Technology and Device Department of PhysicsZhejiang UniversityHangzhou 310027China Quantum Optics and Quantum Information Research Group Department of PhysicsUniversity of MalakandChakdara Dir(L)Khyber PakhtunkhwaPakistan Department of Mathematics Zhejiang Normal UniversityJinhua 321004China

Herein,we propose a scheme for the realization of two-dimensional atomic localization in aλ-type three-level atomic medium such that the atom interacts with the two orthogonal standing-wave fields and a probe *** of the spatially dependent atom-field interaction,the information about the position of the atom can be obtained by monitoring the probe transmission spectra of the weak probe field for the first time.A single and double sharp localized peaks are observed in the one-wavelength *** have theoretically archived high-resolution and high-precision atomic localization within a region smaller thanλ/25×λ/*** results may have potential applications in the field of nano-lithography and advance laser cooling technology.

关键词： 2D atomic localization probe transmission spectra standing-wave fields three-level atomic medium