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Search Results: 1 - 10 of 30650 matches for " Fen Sun "
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College Teachers’ Soft Ability Indicator System and Measuring Methods  [PDF]
Fen Sun, Yinqiu Ma
Journal of Human Resource and Sustainability Studies (JHRSS) , 2019, DOI: 10.4236/jhrss.2019.72017
Abstract: The concept and features of college teachers’ soft abilities are defined. The features of College Teachers’ Soft Ability are: not easy to train and develop; talent’s deep characteristic; capable of effectively predict high working performance. The method to establish the Soft Ability indicator system is: to be sure about job requirements on hard abilities involving knowledge and technique via college teachers’ job analysis; then to use behavioral event interview to determine the essential condition of soft abilities related to high performance. The method to measure College Teachers’ Soft Abilities in recruitment and selection is to firstly change soft ability as specific work behavior, and then make measurement by methods of employment interview, evaluation and behavior observation.
Heat and hyposmotic stimulation increase in [Ca2+]i by Ca2+ influx in rat synoviocytes
WenWu Sun,Fen Hu,WenXiu Yang
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0133-8
Abstract: Rheumatoid arthritis (RA), which is marked by inflammatory synovitis, is a common, chronic autoimmune-disease, whose pathogenesis is complex and still unclear. In order to explore the effects of heat and hyposmotic stimuli on synoviocytes in rheumatoid arthritis, the changes of [Ca2+]i induced by heat, hyposmotic and 4α-PDD stimuli were observed in synoviocytes. [Ca2+]i elevation induced by heat 28, hyposmotic and 4α-PDD stimuli is found to be positively relative to increasing temperature, decreasing osmolality and rising concentration of 4α-PDD. Results show that there is reciprocity among these stimuli and desensitization, and that [Ca2+]i elevation depends on Ca2+ influx, but not necessarily links to Ca2+ release from intracellular stores and voltage-dependent Ca2+ channel in synoviocytes. The above characteristics of Ca2+ influx are similar to those of TRPV4. A probable mechanism has been suggested that heat and hyposmotic stimulation might increase the level of [Ca2+]i by activating the TRPV4-like channel and Ca2+ influx in the synoviocytes.
Heat and hyposmotic stimulation increase in [Ca2+]i by Ca2+ influx in rat synoviocytes
Heat and hyposmotic stimulation increase in [Ca^2+]i by Ca^2+ influx in rat synoviocytes

WenWu Sun,Fen Hu,WenXiu Yang,

科学通报(英文版) , 2008,
Abstract: Rheumatoid arthritis (RA), which is marked by inflammatory synovitis, is a common, chronic autoimmune-disease, whose pathogenesis is complex and still unclear. In order to explore the effects of heat and hyposmotic stimuli on synoviocytes in rheumatoid arthritis, the changes of Ca2+]i induced by heat, hyposmotic and 4α-PDD stimuli were observed in synoviocytes. Ca2+]i elevation induced by heat 28, hyposmotic and 4α-PDD stimuli is found to be positively relative to increasing temperature, decreasing osmolality and rising concentration of 4α-PDD. Results show that there is reciprocity among these stimuli and desensitization, and that Ca2+]i elevation depends on Ca2+ influx, but not necessarily links to Ca2+ release from intracellular stores and voltage-dependent Ca2+ channel in synoviocytes. The above characteristics of Ca2+ influx are similar to those of TRPV4. A probable mechanism has been suggested that heat and hyposmotic stimulation might increase the level of Ca2+]i by activating the TRPV4-like channel and Ca2+ influx in the synoviocytes. Supported by a foundation of the City of Tianjin, China (Grand No. 983113411)
A Type-II Positive Allosteric Modulator of α7 nAChRs Reduces Brain Injury and Improves Neurological Function after Focal Cerebral Ischemia in Rats
Fen Sun, Kunlin Jin, Victor V. Uteshev
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0073581
Abstract: In the absence of clinically-efficacious therapies for ischemic stroke there is a critical need for development of new therapeutic concepts and approaches for prevention of brain injury secondary to cerebral ischemia. This study tests the hypothesis that administration of PNU-120596, a type-II positive allosteric modulator (PAM-II) of α7 nicotinic acetylcholine receptors (nAChRs), as long as 6 hours after the onset of focal cerebral ischemia significantly reduces brain injury and neurological deficits in an animal model of ischemic stroke. Focal cerebral ischemia was induced by a transient (90 min) middle cerebral artery occlusion (MCAO). Animals were then subdivided into two groups and injected intravenously (i.v.) 6 hours post-MCAO with either 1 mg/kg PNU-120596 (treated group) or vehicle only (untreated group). Measurements of cerebral infarct volumes and neurological behavioral tests were performed 24 hrs post-MCAO. PNU-120596 significantly reduced cerebral infarct volume and improved neurological function as evidenced by the results of Bederson, rolling cylinder and ladder rung walking tests. These results forecast a high therapeutic potential for PAMs-II as effective recruiters and activators of endogenous α7 nAChR-dependent cholinergic pathways to reduce brain injury and improve neurological function after cerebral ischemic stroke.
A Comparison of Active and Passive Metamaterials from Equivalent Lumped Elements Modes  [PDF]
Ya-Fen Ge, Hui Huang, Yong Liu, Hou-Jun Sun, Xin Lv, Li-Ming Si
Optics and Photonics Journal (OPJ) , 2013, DOI: 10.4236/opj.2013.32B061
Abstract:

With ever-increasing operating frequencies and complicated artificial structures, loss effects become more and more important in applications of metamaterials. Based on circuit theory and transmission line principle, the design equations for effective electromagnetic (EM) parameters (attenuation constant α, phase constant β, characteristic impedance Z0) of general active and passive metamaterial are compared and derived from the equivalent lumped circuit parameters (R, G, LL, CL, LR, CR). To verify the design equations, theα, βand Z0 indifferent cases, including balanced, unbalanced, lossless, passive and active, are shown by numerical simulations. The results show that using the active method can diminish the loss effects. Meantime, it also has influence on phase constant and real part of characteristic impedance.


Teacher Overinvolvement and Student Depression among Junior High School Students in Taiwan
Fen Fen Huang,Cou Chen Wu,Chang Ya Hu,Sun Shen Yang
The Scientific World Journal , 2006, DOI: 10.1100/tsw.2006.152
Abstract:
Ablation of Neurogenesis Attenuates Recovery of Motor Function after Focal Cerebral Ischemia in Middle-Aged Mice
Fen Sun, Xiaomei Wang, XiaoOu Mao, Lin Xie, Kunlin Jin
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0046326
Abstract: Depletion of neurogenesis worsens functional outcome in young-adult mice after focal cerebral ischemia, but whether a similar effect occurs in older mice is unknown. Using middle-aged (12-month-old) transgenic (DCX-TK(+)) mice that express herpes simplex virus thymidine kinase (HSV-TK) under control of the doublecortin (DCX) promoter, we conditionally depleted DCX-positive cells in the subventricular zone (SVZ) and hippocampus by treatment with ganciclovir (GCV) for 14 days. Focal cerebral ischemia was induced by permanent occlusion of the middle cerebral artery (MCAO) or occlusion of the distal segment of middle cerebral artery (dMCAO) on day 14 of vehicle or GCV treatment and mice were killed 24 hr or 12 weeks later. Increased infarct volume or brain atrophy was found in GCV- compared to vehicle-treated middle-aged DCX-TK(+) mice, both 24 hr after MCAO and 12 weeks after dMCAO. More severe motor deficits were also observed in GCV-treated, middle-aged DCX-TK(+) transgenic mice at both time points. Our results indicate that ischemia-induced newborn neurons contribute to anatomical and functional outcome after experimental stroke in middle-aged mice.
Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu+Cu Collisions

JIANG Zhi-Jin,SUN Yu-Fen,

中国物理快报 , 2012,
Abstract:
Cooling of a $Λ$-type three-level atom in a high finesse optical cavity
Lei Tan,Li-Wei Liu,Yan-Fen Sun
Physics , 2010, DOI: 10.1143/JPSJ.79.054401
Abstract: A theoretical study is carried out for the cavity cooling of a $\Lambda$-type three level atom in a high-finesse optical cavity with a weakly driven field. Analytical expressions for the friction, diffusion coefficients and the equilibrium temperatures are obtained by using the Heisenberg equations, then they are calculated numerically and shown graphically as a function of controlling parameters. For a suitable choice of these parameters, the dynamics of the cavity field interaction with the $\Lambda$-type three-level atom introduces a sisyphus cooling mechanism yielding lower temperatures below the Doppler limit and allowing larger cooling rate, avoiding the problems induced by spontaneous emission.
Aphasia in Taishan Culture Worldwide Communication  [PDF]
Fen Tian
Advances in Journalism and Communication (AJC) , 2015, DOI: 10.4236/ajc.2015.33006
Abstract: Aphasia will occur in cultural communication with no exception of Taishan culture to the world. This article analyses the cultural aphasia from aspects of communication, discusses the reasons and proposes the solutions which is a tentative study to Chinese traditional culture communication.
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