Taiyuan, China
Taiyuan, China

Taiyuan Normal University is a university in Shanxi, China under the authority of the provincial government. Taiyuan Normal University is a teaching University. It provides graduates to fill China's growing need for primary, secondary and tertiary teachers. Wikipedia.


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Liu X.C.,China Agricultural University | Dong H.W.,Taiyuan Normal University | Zhou L.,China Agricultural University | Du S.S.,Beijing Normal University | Liu Z.L.,China Agricultural University
Parasitology Research | Year: 2013

The aim of this research was to determine larvicidal activity of the essential oil derived from roots of Toddalia asiatica (L.) Lam. and the isolated constituents against the larvae of the Culicidae mosquito Aedes albopictus. Essential oil of T. asiatica roots was obtained by hydrodistillation and analyzed by GC and GC-MS. A total of 58 components of the essential oil of T. asiatica roots were identified. The essential oil has almost same content of (35.41 %) of sesquiterpenoids and monoterpenoids (31.87 %). The principal compounds in T. asiatica essential oil were geraniol (9.84 %), d-limonene (7.52 %), isopimpinellin (6.62 %), α-gurjunene (6.25 %), and 4-vinylguaiacol (5.94 %). Based on bioactivity-directed fractionation, geraniol, d-limonene, and isopimpinellin were isolated from T. asiatica root essential oil. Geraniol, d-limonene, and isopimpinellin exhibited strong larvicidal activity against A. albopictus with LC50 values of 30.13, 19.84, and 32.05 μg/ml, respectively, while the essential oil of T. asiatica had an LC50 value of 69.09 μg/ml. The result indicated that the essential oil of T. asiatica roots and the three isolated constituents have potential for use in control of A. albopictus larvae and could be useful in search of newer, safer, and more effective natural compounds as larvicides. © 2012 Springer-Verlag Berlin Heidelberg.


Yang J.W.,Taiyuan Normal University | Hou H.J.,Yancheng Institute of Technology
High Pressure Research | Year: 2012

A first-principles investigation on the crystal structural and elastic properties and the equation of state of wurtzite-type cadmium selenide (w-CdSe) has been conducted using the plane-wave pseudo-potential density functional theory and the quasi-harmonic Debye model. The elastic constants, the aggregate elastic moduli, the elastic anisotropy, and Poisson's ratio under pressure have been investigated. Our calculated equilibrium lattice constants, the elastic constants, and the aggregate elastic moduli at zero pressure are in good agreement with the experimental data and other theoretical results. The variations in the compressional and shear elastic wave velocities with pressure at zero temperature up to pressure 2.7GPa have been studied; the computed Debye temperature at zero pressure and zero temperature is in reasonable agreement with the result of Bonello et al., In addition, the equation of state of w-CdSe in the pressure range of 0-2.7GPa and up to a temperature of 900K has also been obtained. © 2012 Copyright Taylor and Francis Group, LLC.


Ren S.,Beijing University of Chemical Technology | Hou Y.,Taiyuan Normal University | Tian S.,Beijing University of Chemical Technology | Chen X.,Beijing University of Chemical Technology | Wu W.,Beijing University of Chemical Technology
Journal of Physical Chemistry B | Year: 2013

As a kind of novel and efficient material, ionic liquids (ILs) are used for capture of acidic gases including SO2 and CO2 from flue gas. Due to very low content of acidic gases in flue gas, it is important to find functional ILs to absorb the acidic gases. However, up to now, there is no criterion to distinguish if the ILs are functional or not before use, which greatly influences the design of functional ILs. In this work, a series of ILs were synthesized and used to determine functional or normal ILs for the capture of acidic gases. It has been found that the pKa of organic acids forming the anion of ILs can be used to differentiate functional ILs from normal ILs for the capture of acidic gases from flue gas. If the pKa of an organic acid is larger than that of sulfurous acid (or carbonic acid), the ILs formed by the organic acid can be called functional ILs for SO2 (or CO2) capture, and it can have a high absorption capacity of SO 2 (or CO2) with low SO2 (or CO2) concentrations. If not, the IL is just a normal IL. The pKa of organic acids can also be used to explain the absorption mechanism and guide the synthesis of functional ILs. © 2013 American Chemical Society.


Guo W.,Beijing University of Chemical Technology | Hou Y.,Taiyuan Normal University | Wu W.,Beijing University of Chemical Technology | Ren S.,Beijing University of Chemical Technology | And 2 more authors.
Green Chemistry | Year: 2013

A variety of quaternary ammonium salts have been used to efficiently separate phenols from model oils, which avoids the use of mineral alkali and acids that produce phenol-containing waste water. It was found that some quaternary ammonium salts showed high phenol-removal efficiencies, which could reach as high as 99.9%. The separation mechanism was also discussed. © 2013 The Royal Society of Chemistry.


Pang K.,Beijing University of Chemical Technology | Hou Y.,Taiyuan Normal University | Wu W.,Beijing University of Chemical Technology | Guo W.,Beijing University of Chemical Technology | And 2 more authors.
Green Chemistry | Year: 2012

Ammonium salts have been used to efficiently separate phenols from oils (where hexane, toluene and p-xylene were used as model oils) by forming a deep eutectic solvent, which is a nonaqueous process and avoids the use of mineral alkalis and acids that produces phenol containing waste water. © 2012 The Royal Society of Chemistry.


Tian J.-F.,Taiyuan Normal University
Optik | Year: 2011

Based on the nonlinear coupled mode theory, by using the reversely recursive transmission matrix method, the switching characteristics of linearly chirped nonlinear Bragg gratings (LC-NLBG) have been investigated numerically. The results show that, introducing spatial chirp in fiber gratings is helpful to widen the bistable wavelength range, and the influence of the chirp on the switching-on threshold and the on-off ratio of the bistable switching are obvious, the chirp-dependent bistability is due to the difference of the axial distribution of forward wave intensity in the gratings. © 2010 Elsevier GmbH © 2010 Published by Elsevier GmbH. All rights reserved.


Guo H.,Taiyuan Normal University
Journal of Computers | Year: 2012

The scarce but consistent chance of getting false positive matches [1], [2] in protein database search [3] has always casted a shadow over the reliability of results. The situation can be helped by viewing the protein data from a descriptive and the probabilistic framework, together. Using the conventional approach as the first stage, top down protein data is descriptively searched for proteins and the results are scored and ranked, using a top down protein search engine. We then suggest applying Support Vector Machine, (SVM) as a second stage probabilistic scoring system, to the first stage protein database search results so as to further enhance protein classification. For SVM scoring, features are extracted from the top down data and a feature table is constructed. An SVM using Radial Basis Function is trained with this feature table. Later classification is performed on the test data using this SVM. The classification can then be viewed together with the previously calculated search engine score and a reordering of top ranked proteins may be done. © 2012 ACADEMY PUBLISHER.


Li R.H.,Taiyuan Normal University
Zhongguo ji sheng chong xue yu ji sheng chong bing za zhi = Chinese journal of parasitology & parasitic diseases | Year: 2012

To evaluate the efficacy of albendazole (ABZ) orally administered at different dosages against Trichinella spiralis encapsulated larvae in striated muscle in mice. A total of 72 BALB/c mice were divided equally into 9 groups. Each mouse was infected orally with 50 T. spiralis encapsulated larvae. At the 29th day after infection, albendazole was each orally administered to the mice of the 8 groups with doses of 50, 100, 150, 200, 250, 300, 350, and 400 mg/(kg x d), respectively, once a day at fixed time for 6 d. The control group was untreated. Mice were sacrificed at the 7th day post administration. The encapsulated larvae in diaphragmatic muscle, jugomaxillary muscle and gastrocnemius muscle were examined with pellet method. The encapsulated larva that the capsule was complete and the larva inside curled naturally with clear structure was considered survived. The therapeutic effect was estimated on the average quantity of total, survival and dead encapsulated larvae per gram muscle, total worm reduction and survival worm reduction. The total worm burden and survival worms showed a decreasing trend and the numbers of dead worms increased in diaphragmatic muscle, jugomaxillary muscle and gastrocnemius muscle when the dosage of albendazole were 50-250 mg/(kg x d), but the number of larvae in the muscles remained similar when the dosage of albendazole was greater than 250mg/kg x d. Compared with the control group, the total and survival worms in the muscles in 200 mg/(kg x d) and the greater dose groups decreased significantly (P<0.01). In 250 mg/(kg x d) group the total worm reduction in jugomaxillary muscle, diaphragmatic muscle and gastrocnemius muscle were 50.00%, 62.62% and 57.48%, and the survival worm reduction were 79.96%, 83.25% and 80.56%, respectively. Orally administered to mice for 6 d, albendazole at 250 mg/(kg x d) is a suitable dose against encapsulated larva stage of T. spiralis in muscle.


Li R.H.,Taiyuan Normal University
Zhongguo ji sheng chong xue yu ji sheng chong bing za zhi = Chinese journal of parasitology & parasitic diseases | Year: 2011

To observe the efficacy of oral administration of tribendimidine (TBD) at different dosages against Trichinella spiralis encapsulated larvae in murine striated muscle. A total of 88 BALB/c mice were divided equally into 11 groups. Each mouse was infected orally with 50 T spiralis encapsulated larvae. At day 29 after infection, TBD was each orally administered to mice of the 11 groups with doses of 0 (control group), 50, 100, 150, 200, 250, 300, 350, 400, 450, and 500 mg/(kg x d), respectively. All mice were administered once a day and lasted for 6d, and untoward drug reactions for mice were observed. Mice were sacrificed at the 7th day after administration of TBD, the encapsulated larvae in diaphragmatic muscle, jugomaxillary muscle, pectoral muscle and gastrocnemius muscle were examined by pellet method, and the total, survival and dead worms were counted. The therapeutic effect was estimated on the basis of average quantity of encapsulated larvae per gram muscle. During the administration period, no untoward reaction were observed in mice of 50-300 mg/(kg x d) groups. Mice in 350 and 400 mg/(kg x d) groups showed body hair dishevelment, emaciation and food-intake decrease, death rates were 25% and 50%, respectively. All mice in 450 and 500 mg/(kg x d) groups died on day 4 and 5 after TBD administration, respectively. In control group, the highest total burden (per gram) was found in diaphragmatic muscle, followed by jugomaxillary muscle, gastrocnemius muscles and pectoral muscles. TBD at dose of 50 mg/(kg x d) was unable to kill encapsulated larvae. In the rest groups, with the increase of drug dose, the total worm burden and the number of survival worms showed a decreasing trend in four kinds of muscles, and were significantly lower than that of the control group (P < 0.05 or P < 0.01). In 300 mg/(kg x d) group the number of survival worms in diaphragmatic muscle, jugomaxillary muscle, pectoral muscle and gastrocnemius muscle [8.6 +/- 1.7, 2.8 +/- 0.7, 3.9 +/- 0.8, and 0, respectively] were significantly lower than that of the control group [3648.1 +/- 989.2, 1266.4 +/- 812.3, 701.9 +/- 196.4, and 711.6 +/- 34.6] (P < 0.01). All encapsulated larvae in the four kinds of muscle died in 350 and 400 mg/(kg x d) groups. With the increase of TBD dosage, the mortality of encapsulated larvae increased in the muscles, reached up to 98.6%--100% in 300 m (kg x d) group (P < 0.01), and 100% in 350 and 400 mg/(kg x d) groups (P < .01). Oral tribendimidine administered at 50 mg/(kg x d) to mice for 6 d is unable to reduce worm burden in muscle. Tribendimidine 300 mg/(kg x d) effectively kill encapsulated larvae and is a suitable dose against encapsulated larva stage. However, tribendimidine at doses of 350 mg/(kg x d) and above for 6d is toxic to mice and even causing death.


Wang Y.,Taiyuan Normal University
Acta Geographica Sinica | Year: 2011

The evolution of geographical environmental system obeys the second law of thermodynamics: the order degree changes of the system are anti-related to its total entropy changes. The order degree increases when the total entropy changes are negative, and it is useful for human beings' survival and development, and vice versa. The analysis shows that the spontaneous evolution of natural geographical environment is developing towards ordering. The impacts of large-scale human activities on city system and human geographical environment are totally positive, and push its ordering development; their impacts on natural geographical development are both positive and negative. The positive impact is mainly the incremental production of low-entropy material and energy, which has been reflected in the increase of agricultural products and the application of new energy technology, such as solar energy, and ecological environment construction. The negative impacts are consumption of low-entropy material and energy, discharge of 'three wastes' and elimination heat to the environment during the process of consumption and industrial production. These impacts lead to decrease of stock of low-entropy material and expansion of entropy increase during the geographical development, and have already caused common anxiety. Ordering of background evolution of natural geographical environment and technological possibility indicate that the evolution of geographical environment can continue ordering by introducing more low-entropy material and energy and decreasing the discharge of entropy.

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