National Taiwan Normal University , or Shīdà 師大, is an institution of higher education and normal school operating out of three campuses in Taipei, Taiwan. NTNU is widely recognized as one of Taiwan's elite higher education institutions. The university enrolls approximately 11,000 students each year. The ratio of undergraduate to graduate students is 6:4. Approximately 1,500 students are international. Wikipedia.
Xiao D.,Oak Ridge National Laboratory |
Chang M.-C.,National Taiwan Normal University |
Niu Q.,University of Texas at Austin
Reviews of Modern Physics | Year: 2010
Ever since its discovery the notion of Berry phase has permeated through all branches of physics. Over the past three decades it was gradually realized that the Berry phase of the electronic wave function can have a profound effect on material properties and is responsible for a spectrum of phenomena, such as polarization, orbital magnetism, various (quantum, anomalous, or spin) Hall effects, and quantum charge pumping. This progress is summarized in a pedagogical manner in this review. A brief summary of necessary background is given and a detailed discussion of the Berry phase effect in a variety of solid-state applications. A common thread of the review is the semiclassical formulation of electron dynamics, which is a versatile tool in the study of electron dynamics in the presence of electromagnetic fields and more general perturbations. Finally, a requantization method is demonstrated that converts a semiclassical theory to an effective quantum theory. It is clear that the Berry phase should be added as an essential ingredient to our understanding of basic material properties. © 2010 The American Physical Society.
Wu C.-R.,National Taiwan Normal University
Progress in Oceanography | Year: 2013
To investigate the interannual variability in the northwestern Pacific, an empirical mode decomposition (EMD) was applied to 17-year Absolute Dynamic Topography (ADT) data west of Luzon Island, the Philippines. The mean sea surface height in this area is an appropriate index for the Kuroshio intrusion into the South China Sea (SCS). Significant interannual fluctuations were extracted by the EMD. The interannual variability was strongly correlated with the Pacific Decadal Oscillation (PDO) index, but not the El Niño-Southern Oscillation (ENSO). This indicated the potential impact of the PDO on the circulation in the area. In the warm phase of the PDO (positive index), a southerly anomalous wind off the Philippines causes a northward shift of the North Equatorial Current Bifurcation Latitude (NECBL). This leads to a weakened Kuroshio off Luzon, favoring Kuroshio intrusion into the SCS. The northward migration of the NECBL also results in a weakened Kuroshio off southeast Taiwan and a larger Kuroshio transport off northeast Taiwan. The abundant westward propagating eddies impinging on the Kuroshio in the Subtropical Countercurrent region increases this transport. Although the ENSO has little effect on monsoonal winds during the warm PDO phase, it has a strong impact on the monsoon and meridional migration of the NECBL during the cold phase of the PDO. Therefore, NECBL variations only show a close correspondence with the ENSO during the cold PDO phase. Because the influence of the ENSO is not stationary, the impact of the PDO should be taken into account when examining interannual variability in the low-latitude western North Pacific. © 2012 Elsevier Ltd.
National Taiwan Normal University | Date: 2015-02-27
A method of using beta-ionone, E)-4-(2,6,6-trimethylcyclohex-1-en-1-yl)but-3-en-2-one, treats and prevents diseases otherwise induced by Propionibacterium acnes and thus effectively reduces inflammatory responses otherwise caused by Propionibacterium acnes.
National Taiwan Normal University | Date: 2015-05-12
A method for treating abnormal -amyloid mediated diseases is disclosed, comprising administering a pharmaceutical composition to a subject in need, wherein the pharmaceutical composition comprises an indolylquinoline derivative represented by the following formula 1:
National Taiwan Normal University | Date: 2015-12-21
An apparatus for producing a graphene material includes a tank, a container, an agitating module, a second electrode disposed in the tank, and a power supply module. The container is used for receiving a graphite material, and is formed with a plurality of through holes for the electrolyte solution to pass therethrough. The agitating module includes a control unit and an agitating unit used as a first electrode, and inserted into the container for agitating the electrolyte solution and the graphite material. The power supply module is electrically connected to the agitating unit and the second electrode for supplying electric power to generate an electrical potential difference.
National Taiwan Normal University | Date: 2016-01-15
The present invention relates to a method for treating spinocerebellar ataxias comprising administering a pharmaceutical composition comprising of therapeutically effective amounts of Paeonia lactiflora and Glycyrrhiza uralensis to a subject in need. The pharmaceutical composition reduces productions of reactive oxygen species and inflammatory factors to suppress polyglutamine aggregation.
National Taiwan Normal University | Date: 2016-07-20
A wearable device capable of indicating direction is provided, including a wearable module, a plurality of acoustic wave sensors, a plurality of vibrators, and a control module. The wearable module is adapted to be worn on the users body, the acoustic wave sensors and the vibrators are disposed on the wearable module in different directions. The control module is electrically connected to the acoustic wave sensors and the vibrators. Each acoustic wave sensor is driven by a sound signal generated by an external object to generate a response signal, the control module receives and compares the response signals to recognize the direction of the external object, and controls the vibrator to generate the vibration signal.
National Taiwan Normal University | Date: 2016-05-11
A method for controlling a seat is performed by a mobile device in cooperation with a database. The database contains at least one reference data set which contains a physical characteristic data and a seat setting data. The method includes the steps of: a) upon receipt of an input, searching the database to identify which one(s) of the at least one reference data set contains the physical characteristic data that matches the input, the one(s) serving as candidate data set(s); and b) when a total number of the candidate data set(s) identified in step a) is one, outputting, to the seat, the seat setting data contained in the candidate data set for controlling the seat.
National Taiwan Normal University | Date: 2016-04-12
A method of noninvasively detecting plant pathogenic virus and an electronic apparatus thereof are provided. The method is adapted to the electronic apparatus for detecting pathogenic virus in plants. The method includes the following steps. An excitation light beam is projected to the plant, and a reaction light emitted by the plant in response to the excitation light is received. An analytic optical spectrum corresponding to the reaction light is obtained, and whether the plant has the pathogenic virus or not is determined according to the analytic optical spectrum.
National Taiwan Normal University | Date: 2015-10-01
An organocatalytic kinetic resolution of racemic secondary nitroallylic alcohols via Michael/acetalization sequence to give fully substituted tetrahydropyranols is described. The process affords the products with high to excellent stereoselectivities. The highly enantioenriched, less reactive (S)-nitroallylic alcohols were isolated with good to high chemical yields. The synthetic application of the resolved substrate is shown toward the synthesis of enantioenriched (+)-(2S,3R)-3-amino-2-hydroxy-4-phenylbutyric acid.