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Search Results: 1 - 10 of 4541 matches for " Liping Jiao "
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The Adjustment and Effects of Vocabulary Teaching Strategies in Flipped Classroom  [PDF]
Hongwei Zhang, Jie Li, Liping Jiao, Weilian Ma, Chen Guan
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.714199
Abstract: The importance of vocabulary teaching is self-evident. Yet, the present English vocabulary teaching model is still far more traditional than modern because of the inadequacy of education revolution. The flipped classroom teaching model brings a new horizon to the field of vocabulary teaching. This paper takes the freshmen in the English department of a college in northern part of China as the main body of research analyzes the results of the experimental vocabulary teaching and gets the conclusion that the flipped classroom teaching model promotes English vocabulary teaching outcomes.
Analysis of Characteristics of the Forecast Jump in the NCEP Ensemble Forecast Products  [PDF]
Xiakun Zhang, Liping Zhang, Jiao Fu, Longxi Zhang
Atmospheric and Climate Sciences (ACS) , 2017, DOI: 10.4236/acs.2017.71011
Abstract: The limit of numerical prediction and ensemble prediction can be further understood by the study of the forecast jump. By using the ensemble average forecast and control forecast product output data for the United States National Environmental Prediction Center (NCEP) global ensemble forecast system (GEFS), and the concept of Jumpiness index from Zsoter et al., we analyzed the statistical characteristics of forecast jump. Results show that, on average, in the NCEP ensemble forecast product, the time average prediction jump index increases with the increase of the forecast aging, and the actual forecast experience can reflect this phenomenon. The consistency of ensemble average forecast is better than the corresponding control forecast. Also, in summer, the frequency of “forecast jump” phenomenon is fluctuating by 17.5%.
Radiation-Pressure Effects in Cold-Atom Absorption Spectroscopy and Electromagnetically Induced Transparency  [PDF]
Suying Bai, Xiaoxuan Han, Yunchun Jiao, Liping Hao, Jianming Zhao, Suotang Jia
Journal of Modern Physics (JMP) , 2017, DOI: 10.4236/jmp.2017.811111
Abstract: Radiation pressure due to the interaction between a probe light and cold atoms is investigated in a standard cesium magneto-optical trap. The radiation pressure alters the absorption spectroscopy of cold atoms, leading to line shapes and linewidths after resonant interaction that are different for positive and negative probe chirps. The difference is attributed to the radiation pressure of the probe laser, due to which atoms become accelerated at the resonance. The effect of the radiation pressure is also seen in electromagnetically induced transparency (EIT) involving an excited Rydberg level. The density matrix equation accounting for the radiation pressure is used to simulate the experiments. The simulations agree well with the measurements both for absorption and EIT spectra. We find that the effect of the radiation pressure is reduced at low probe intensities, and can be neglected when the probe intensity is smaller than Isat/2 .
Analysis on Penetrative Effects of New Media on Ideological and Political Education of Universities and Colleges  [PDF]
Liping Zhang
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.312024
Abstract: The growing development of science, technology and information makes media such as computer and mobile phone become essential parts in our daily life and play a vital role in students’ physical and mental development. With rapid development of science and technology at present, new media such as computer and mobile phone has become an essential part of our daily life. As the important platform to cultivate high-quality talents, colleges play a crucial role in the development of society. Colleges should know clearly about the important responsibilities shouldered by them. According to students’ characteristics, they should achieve effective combination of ideological and political education and new media, give full play to the huge advantages of new media, and use its characteristics such as enormous information and rapid propagation speed to realize its effective use in ideological and political education. This article analyzes the problems of new media existed in ideological and political education in colleges, puts forward countermeasures of new media to penetrate into the ideological and political education in colleges and lays foundation for the penetrability of new media in ideological and political education in colleges.
Analysis on New Approaches of Ideological and Political Education in Colleges under New Media Environment  [PDF]
Liping Zhang
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.622249
Abstract: The increasing rise and development of new media technology has influenced the college students profoundly. And new media technologies with remarkable importance such as Wechat, QQ and MicroBlog have given great impacts on current ideological and political education in colleges. Current ideological and political education in colleges is facing new requirements under new media environment, and the performance of ideological and political education in colleges is facing new development conditions as well. On one hand, the effective utilization of new media has significantly shrunk the gap between college teaching staffs and students, rendering convenience to the ideological and political education in colleges. On the other hand, due to the great openness of new media, it has influenced the authority of ideological and political work in colleges to some extent, and it may also influence the leading capacity of the working staff of ideological and political education in colleges, which has weakened the educational achievements to a large extent. Currently, how to utilize the new media environment effectively to make it beneficial to the ideological and political education in colleges has been a problem needed to be settled urgently. This paper has mainly analyzed current situation of the existing ideological and political education in colleges, and has studied on the method of ideological and political education in colleges under new media environment, thus we put forward new approaches for the ideological and political education in colleges.
The Vasorelaxant Mechanisms of a Rho Kinase Inhibitor DL0805 in Rat Thoracic Aorta
Lili Gong,Jianhao Peng,Lianhua Fang,Ping Xie,Kun Si,Xiaozhen Jiao,Liping Wang,Guanhua Du
Molecules , 2012, DOI: 10.3390/molecules17055935
Abstract: Rho-kinase has been suggested as a potential therapeutic target in the treatment of cardiovascular diseases. The Rho-kinase signaling pathway is substantially involved in vascular contraction. The aim of the present study was to evaluate the vasorelaxant effects of Rho kinase inhibitor DL0805 in isolated rat aortic rings and to investigate its possible mechanism(s). It was found that DL0805 exerted vasorelaxation in a dose-dependent manner in NE or KCl-induced sustained contraction and partial loss of the vasorelaxation under endothelium-denuded rings. The DL0805-induced vasorelaxation was significantly reduced by the nitric oxide synthase inhibitor Nω-nitro-L-arginine methyl ester, the guanylate cyclase inhibitor methylene blue and the cyclooxygenase inhibitor indomethacin. The voltage-dependent K+ channel blocker 4-aminopyridine remarkably attenuated DL0805-induced relaxations. However, the ATP-sensitive K+ channel blocker glibenclamide and Ca2+-activated K+ channel blocker tetraethylammonium did not affect the DL0805-induced relaxation. In the endothelium-denuded rings, DL0805 also reduced NE-induced transient contraction and inhibited contraction induced by increasing external calcium. These findings suggested that DL0805 is a novel vasorelaxant compound associated with inhibition of Rho/ROCK signaling pathway. The NO-cGMP pathway may be involved in the relaxation of DL0805 in endothelium-intact aorta. The vasorelaxant effect of DL0805 is partially mediated by the opening of the voltage-dependent K+ channels.
Structure of polysaccharides from mycelium and culture medium of Phellinus nigricans using submerged fermentation
Xia Li,LiLi Jiao,Xu Zhang,WenMin Tian,Shan Chen,LiPing Zhang
Science China Life Sciences , 2008, DOI: 10.1007/s11427-008-0065-1
Abstract: Two water-soluble polysaccharides, PNW1 and PNM1, were respectively isolated from the mycelium and its culture medium of Phellinus nigricans using submerged fermentation before determining their effects on inhibiting the growth of transplantable tumors in mice. The results of the pharmaceutical experiments showed that oral administration of PNW1 and PNM1 (at a dose of 400 mg/kg) inhibited the growth of tumor of mice-transplanted Sarcoma 180 in vivo. Moreover, a higher inhibition ratio of PNW1 (74.70%) was obtained as compared with PNM1 (55.84%). The averaged molecular weight of PNW1 and PNM1 was determined to be 33 and 29 kD, respectively. Both PNW1 and PNM1 were consisted of glucose, galactose, mannose, arabinose and fucose. The major structural features of PNW1 and PNM1 were elucidated using partial acid hydrolysis, periodate oxidation, Smith degradation, 13C-NMR, methylation and GC-MS. On the basis of these results, the repeating units of PNW1 and PNM1 were established.
THE PROTON IN MEMBRANE SURFACE MAY BE THE MAJOR DRIVEN FORCE OF ATP SYNTHESIS
膜表面质子可能是ATP合成的主要驱动力

Jiao Xuanmao,Zhu Liping,
焦选茂
,朱丽萍,于军,沈子威

生物物理学报 , 1998,
Abstract: 利用细胞压破碎仪破碎鼠肝线粒体,得到了具有良好生物活性的SMP,其呼吸控制率为1.4。分别采用荧光探针oxonolVI和acridineorange,利用荧光淬灭法测定了丙二酸滴定过程中,SMPΔΨ和ΔpH的变化趋势,结果表明:当丙二酸浓度达到0.75mmol/L时,ΔΨ的建立完全被抑制,而ΔpH仍然保持了83.9%。当丙二酸浓度达到1.00mmol/L时,ΔpH的建立才完全被抑制。SMPATP合成活性的测定显示,当ΔΨ的建立被完全抑制,而ΔpH仍然存在时,仍有部分ATP合成活性(34.1%)。上述现象为膜表面高能质子是ATP合成的主要驱动力的观点提供了又一佐证。此外,当丙二酸浓度从0mmol/L增加到0.75mmol/L时,尽管ΔΨ与ΔpH的变化不很大,但SMPATP合成活性却出现明显降低,与氧化呼吸链活性的变化类似,二者呈对数关系,也表明ATP合成很可能与ΔμH+并不直接相关,而与膜表面质子流量呈更为紧密的关系
Structure of polysaccharides from mycelium and culture medium of Phellinus nigricans using submerged fermentation

LI Xia,JIAO LiLi,ZHANG Xu,TIAN WenMin,CHEN Shan &,ZHANG LiPing,

中国科学C辑(英文版) , 2008,
Abstract: Two water-soluble polysaccharides, PNW1 and PNM1, were respectively isolated from the mycelium and its culture medium of Phellinus nigricans using submerged fermentation before determining their effects on inhibiting the growth of transplantable tumors in mice. The results of the pharmaceutical experiments showed that oral administration of PNW1 and PNM1 (at a dose of 400 mg/kg) inhibited the growth of tumor of mice-transplanted Sarcoma 180 in vivo. Moreover, a higher inhibition ratio of PNW1 (74.70%) was obtained as compared with PNM1 (55.84%). The averaged molecular weight of PNW1 and PNM1 was determined to be 33 and 29 kD, respectively. Both PNW1 and PNM1 were consisted of glu- cose, galactose, mannose, arabinose and fucose. The major structural features of PNW1 and PNM1 were elucidated using partial acid hydrolysis, periodate oxidation, Smith degradation, 13C-NMR, me- thylation and GC-MS. On the basis of these results, the repeating units of PNW1 and PNM1 were estab- lished.
A preliminary study of chronology for a newly-discovered ancient city and five archaeological sites in Lop Nor, China
HouYuan Lü,XunCheng Xia,JiaQi Liu,XiaoGuang Qin,FuBao Wang,Abuduresule Yidilisi,LiPing Zhou,GuiJin Mu,YingXin Jiao,JingZhi Li
Chinese Science Bulletin , 2010, DOI: 10.1007/s11434-009-0586-4
Abstract: In the past century, it has long been debated in the archeological, historical, geographical, and many other related communities where the capital of the Luolan and Shanshan states was in the Lop Nor region. This paper presents three AMS radiocarbon ages from a newly-discovered ancient city at about 6.3 km to the northwest of the Xiaohe Graveyard, and fifteen new radiocarbon ages from the Loulan (LA), LE, Qieerqiduke, Milan, and Tuyin sites in Lop Nor. The new investigation shows that the age of newly-discovered ancient city is at ca. 440–500 AD, belonging to the Northern Wei Dynasty (386–534 AD). This is about 100–300 years younger than Loulan (ca. 100–230 AD), LE (ca. 230–300 AD), Qieerqiduke (ca. 200 AD), and Tuyin (ca. 100 AD). A wooden beam from Milan fortress is dated to ca. 370 AD, while the age on north wall at west gate of the fortress is younger, around 770 AD, suggesting that its construction time might be at the Tang Dynasty. According to 14C ages, cultural relic style, and the geographical location, the newly-discovered ancient city is probably attributed to “Zhubin City”, as documented in the historical literature. Temporally, we name the city “ancient Zhubin River City”. However, the characteristics and functions of this ancient city are largely unknown and need more detailed archaeological excavation and investigation in the future. Given its location near the ancient postal relay of Alagan on the crossroad, there is no doubt that the newly-discovered city was at an important geographical position on the Silk Road, no matter whether it was called “Zhubin City”, or “Lielo City”, or the capital of Loulan state—“Yuni City”. Our findings provide new evidence for the temporal and spatial distribution of ancient relic sites and the development of civilization in western China, thus contributing to our understanding of the relationship between human activities and environmental change in the Lop Nor region.
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